Z80 i2c pdf I2C controller is NXP PCA9564D. Note that these are about Z80 assembly, but they don't use CP/M. 6 V supply voltage with 5 V tolerant inputs • Operating Temperature Range: – Standard: 0 ºC to +70 ºC – Extended: –40 ºC to +105 ºC All signals with an overline are active Low. Z80 20MHZ Result Highlights (5) Part ECAD Model Manufacturer Description Download Buy IN80C186-20: Rochester Electronics LLC Microprocessor, 16-Bit, 20MHz, CMOS, PQCC68, PLASTIC, LCC-68: N80C188-20: Rochester Electronics LLC 1-MHz I2C-bus control on longer buses; NXP Fast-mode Plus parallel bus to I2C-bus controller PCA9665 PDF Rev 1. El Z80 i els seus derivats i els clons constitueixen una de les famílies de CPU més comunament utilitzades de tot el temps, i, junt amb la família 6502 I2C or SMBus Master (e. com. Z80-MBC2 short specs: Z80 4/8MHz (SW selectable), 128KB banked RAM, 16 GPIO, I2C, Serial, HD emulation on SD, RTC with temperature sensor, 1 The Z80 SIO The Z80 SIO is the most powerful I/O device of the Z80 product family. life support policy zilog’s products are not authorized for use as critical components in life support devices or systems without the express prior written approval of the president and general counsel of The Z80-MBC2 with RTC module, which is accessed via the I2C protocol. Reload to refresh your session. One significant advantage of this protocol is the need of just two wires that can be quite handy if your microcontroller only has 6 IO ports (an example ATtiny85). Z80 PROGRAMMING MANUALS Search Results. Manufacturer: NXP Semiconductors. S'utilitzava àmpliament tant en microordinadors així com per a propòsits militars. 71, Assembler and C toolchains. Page: 40 Pages. Assembly program code examples given. freescale. Z80 PROGRAMMING MANUALS Result Highlights (5) Part ECAD Model Z80 CPU Central Process Unit: Zilog, Inc. 3. DS1307Z Datasheet (PDF) - Dallas Semiconductor: Part # DS1307Z: Download DS1307Z Download: File Size 165. The book aims to educate technically-minded readers interested in computer hardware by guiding them step-by-step through building their own functional microcomputer called the Z80 Applications Processor (ZAP) based on the popular Z80 Zilog Z80 Assembly Language Programming Classic - Free ebook download as PDF File (. 3V operate, 5V tolerant device, fast access. 81KB, Downloaded 310 times) Attachment: Z80VDC. Speccy Z80 source code in Assembler. Our Pico, as previously, also generates the clock signal, which I wired to a Red LED because now I am also connecting the Clock to our Arduino Uno. Skip to content. COM: X . Sharp's LH0081A is a z80 pio parallel input/output controller. The Z80-MBC2 is an easy to build Z80 SBC (Single Board Computer). com UG129 June 22, 2011 Xilinx is disclosing this Document and Intellectual Property (hereinafter “the Design”) to you for use in the development of de signs to operate 1. The CPU bus inter face logic allows the PlO to interface This article is mainly aimed at my Polish readers, owners of the educational computer CA80, but the i2c bit-banging for Z80+8255A may come useful on other Z80 platforms. ZILOG Z80 PIO USER = S MANUAL Page 6 of 22 CHAPTER 3 PIN DESCRIPTION 3. For example, the signal DCD1 is active when This is the Z80-MBC (Mobile Breadboard Computer), a mini 4MHz Z80 64kB RAM system with Basic and Forth interpreters, CP/M 2. J2 - Serial. Some can run at up to 20Mhz and other up to 50Mhz. 0: AD5110BCPZ80-500R7: 524Kb / 28P: Single-Channel, 128 AgonLight2 computer hardware pdf manual download. e View results and find z80 20mhz datasheets and circuit and application notes in pdf format. Connects to Front Panel . See more You signed in with another tab or window. A kit comprises a microSD card - SPI module for disk emulation and the microSD card contains a * * USING THE TASM CROSS ASSEMBLER * * The TASM cross assembler (Windows CLI application) can be used for various CPU. Just4Fun has implemented the CP/M and QP/M BIOS and etc. Bab ini membahas instruksi-instruksi mikroprosesor Z80 yang terdiri dari 158 jenis instruksi dasar dan 694 instruksi dengan mode pengalamatan yang berbeda. . Single Board BBC Basic Z80 Retro style Computer AgonLight2-BOX - Metal Z80-MBC2 short specs: Z80 4/8MHz (SW selectable), 128KB banked RAM, 16 GPIO, I2C, Serial, HD Z80-MBC2 (and the other boards made by J4F) Users Group. I've got an existing network running in my basement, but when I built it a year ago I limited the I2C part to 2m reaches; now I'm at a point where I want to add a few IO to a few nodes, a few feet further * Multiple devices with the same I2C address? * Don't like bit-banging? * No money for extra I2C multiplexer? * Spare IO ports ? ==> Continue reading ! This was a short proof of concept to use the IO_MUX capability of the ESP32 to display is directly controlled by I2C, but after 5 seconds of no new I2C command being received, the display can instead cycle through the message “NO I2C” until a new I2C command is sent. ) Z80-Datasheet, PDF : Search Partnumber : Included a word "Z80-"-Total : 405 ( 1/21 Page) Manufacturer: Part # Datasheet: Description: Analog Devices: AD5110BCPZ80-1-RL7: 524Kb / 28P: Single-Channel, 128-/64-/32-Position, I2C, 짹8% Resistor Tolerance, Nonvolatile Digital Potentiometer REV. I2C Addresses 0x20-0x23; SPI interface for SDHC card; Stackup (top to bottom) Front Panel For 8 Bit Computers. 3V (and eventually, also use some pins of the PCF8574 at 3. The PCB is size- and pin-compatible with the i8255 Programmable Peripheral Interface and can be plugged into i8255's socket (of course it requires different code to setup and run). Because the memory is overwritten during the test, we avoid the first 0x300 bytes of the top half of RAM, and the last 0xFF The Z80-MBC2 is an easy to build Z80 SBC (Single Board Computer). Description: REAL-TIME CLOCK PLUS RAM (RTC). How To Program the Z80 Periphery Tutorial Doc. pdf top) For I/O, it features a Z80 Parallel I/O (PIO) chip with two 8-bit ports, 12 GPIO pins, and a software-driven I2C interface, which is primarily used for the display and a real-time clock. A kit comprises a microSD card - SPI module This program tests the memory of the Z80-MBC2. D7 - DO Z80-CPU Data Bus (bidirectional, tri-state) This bus is used to transfer all data and commands between the Z80-CPU and the Z80-PIO. Rather than add even more wires to the mess, I went with an I2C LCD 1 The Z80 SIO The Z80 SIO is the most powerful I/O device of the Z80 product family. 3V) – Take out the USB/Serial module – Connect the RX/TX/GND of the Z80 board, to B1 and B2, GND of the TXS0108E. Z80-Retro! I2C/SPI Master Interface Board & Driver Library \n. pdf), Text File (. Abstract: Z180 mpu z80 microprocessor Z180 eZ80F92AZ020SC Z80TM Text: Flash Microprocessors eZ80 Flash Microprocessors The eZ80™ Flash Microprocessors MPU are the latest addition to the high performance eZ80™ product family and the first ZiLOG general-purpose microprocessors to feature on-chip Flash memory. Given the popularity of this View results and find philips 8051 i2c datasheets and circuit and application notes in pdf format. DS1307Z+ Analog Devices / Maxim Integrated Real Time Clock 64 x 8, Serial, I C Real-Time Clock datasheet, inventory, & pricing. The Datasheet Archive. Revision 3 of the Z80 Multi Boot Computer (Z80-MBC3) - eprive/Z80-MBC3. com n c The Z80-MBC2 is an easy to build Z80 SBC (Single Board Computer). Instruction-level granularity implies that, except in a few well-defined cases, the execution of a given instruction cannot stop until all its internal M-cycles have been processed (i. Navigation Menu Rev3A-2512. Contribute to kuninet/KZ80_PIOSIO development by creating an account on GitHub. The Complete Z80 Table (including all undocumented PIO consists of a Z80-CPU bus interface, internal control logic, Port A I/O logic, Port B I/O logic and interrupt control logic. 05 Kbytes: Page 11 Pages : Manufacturer: DALLAS [Dallas Semiconductor] 64 x 8, Serial, I2C Real-Time Clock REV: 121906: DS1307: 287Kb / 14P: 64 x 8, Serial, I2C Real-Time Clock REV: 100208: Cypress Semiconductor: CY14C064I: 2Mb / 40P: PS019217-1222 eZ80F91 MCU Product Specification 2 • IEEE 1149. 6 KB 75015687 English Package Information z80 cpu user manual do not use this product in life support systems. Instruksi-instruksi dikelompokkan ke dalam 11 kelompok seperti load, exchange, arithmetic, logic, jump, dan input-output. Processor) Peripheral Devices RESET, ENABLE, or control inputs INTor status outputs LEDs SDA SCL INT A0 A1 A2 GND VCC P0 P1 P2 P3 P4 P5 P6 P7 Simplified Schematic PCF8574 SCPS068K – JULY 2001 – REVISED SEPTEMBER 2024 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, Z80-MBC2 short specs: Z80 4/8MHz (SW selectable), 128KB banked RAM, 16 GPIO, I2C, Serial, HD Z80-MBC2 (and the other boards made by J4F) Users Group. (Sprint Layout 6 and . Now The I2C (or Two Wire) is a widely-used serial bus to exchange data between two or more devices (microcontrollers, sensors, displays) 1. AgonLight2 computer hardware pdf manual download. Z8400: 1,003Kb / 35P: NMOS/CMOS Z80 CPU CENTRAL PROCESSING UNIT Z84C011: 1Mb / 31P: Z84C01 Z80 CPU with Clock Generator/Controller Z84C0010AEG: 1Mb / 36P: Z8400/Z84C00 NMOS/CMOS Z80 CPU Central processing Unit Toshiba Semiconductor: TMPZ84C61AP-6: 440Kb / 23P: TLCS-Z80 CGC : PicoBlaze 8-bit Embedded Processor www. CS 17 I chip select input (internal pull-up) WR (R/W) 18 I WR is the write control input for MAB8048, MAB8051, or Z80-types (internal pull-up). 32 LEDs; 32 pushbutton switches; I2C interface; Z80 in 3 Chips (this card) SD_CARD_X49 mounted on CARRIER95TO49MM; JOYPAD; Connectors. It is a complete development "ecosystem", and using the AgonLight2 computer hardware pdf manual download. Description: I2C-bus controller. I expect that CP/M oriented books also exist. jpg Also finally defined the 10 spares signals: they are VCC, GND, TEND, DREQ, I2C_RX, I2C_TX, IEI, IEO, BAI, and BAO. Version 201308231 Author: Mario Blunk Abstract: Guideline to program Z80 family devices in a tutorial like manner. The key feature of the CPU above the original Z80, is its ability to address a full 16MB of memory. - SuperFabius/Z80-MBC2 Revision 3 of the Z80 Multi Boot Computer (Z80-MBC3) - Z80-MBC3/README. This section describes the function of each pin. 5 V and 6 V. Z80 Assembly Language These basic functions can be used to generate an eZ80F91 I2C application device driver. This project is an I2C interface for i8080/i8085/Z80-based computers. It has 24 address lines (For the RX/TX connection between ESP32 VGA and Z80), but this gives me the possibility to also use the SCL and SDA pins from the I2C bus, at 3. 1-compatible JTAG • 144-pin LQFP and BGA packages • 3. Abstract: Z80 microcontroller zpak Z180 eZ80F92AZ020SC EZ80F92 eZ80F910200ZCO Text: eZ80Acclaim! bus = FROM_QBUS(i2c_bus, qbus_create(BUS_TYPE_I2C, sizeof(i2c_bus), RD (DTACK) 16 I/(O) RD is the read control input for MAB8049, MAB8051 or Z80-types. 71 too). The on-line manual is here. Z80- Datasheet PDF, Looking for Z80- Datasheet, Z80- PDF Datasheet, Z80- Equivalent, Z80- Schematic, Z80- Datasheets, Cross Reference, DATASHEETBANK , PDF Download,Free Search Site, Pinout Single-Channel, 128-/64-/32-Position, I2C, ±8% Resistor Tolerance, Nonvolatile Digital Potentiometer. CP/M shipped with BIOS in 8080 assembler source. You signed out in another tab or window. Part one of this section describes how to program the SIO so that it communicates with a PC in asynchronous terminal mode whereas part two focuses on the block transfer mode used for file transmission. Un Z80 en LQFP. md at main · eprive/Z80-MBC3. com, a global distributor of electronics components. Delete from my manuals. Add to my manuals Single board BBC BASIC Z80 Retro style computer MICRO-SD-CLASS You need a microSD card to store BASIC and software (demos, examples) AgonLight2-Proto DIY expansion kit with big proto area; compatible with AgonLight2 BOX F r e e s c a l e S e m i c o n d u c t o r, I Freescale Semiconductor, Inc. allowing connection to external SPI devices * DS1704+ real time clock with battery backup * i2c interface (used for the clock and available on headers to connect external devices) * 60 pin Operate in a Dual-CPU mode - so that the original Z80 CPU and eZ80 can alternate access to the address/control and data buses. This Z80 CPU emulator has a classic design with instruction-level granularity that delivers the best performance, whilst offering a reasonable flexibility to achieve precision down to the T-state level. Please enter a valid full or partial manufacturer part number with a minimum of 3 letters or numbers Abstract: AN90001 MAB8400 8051 using I2C BUS Z80 INTERFACING TECHNIQUES Z80 SIO MAB84 PCF8584 8051 Z80 i2c INTERFACING View results and find z80 programming manuals datasheets and circuit and application notes in pdf format. PDF Assembly drawing text is not searchable; J1 - I2C Expansion. The SDA lane in the middle shows activity on the data line, correctly decoded by the I2C analyser in the software (I'm sending a randomly-chosen slave address of 0x54, then data bytes of 0xAA, 0x55 and - randomly - 0x46, or the hex equivalent of 'F'). Download. Check part details, parametric & specs and download pdf datasheet from datasheets. Z80 Multi Board Computer Z80 modular backplane computer Attachment: Z80VDC-PCB. Z8400: 1,003Kb / 35P: NMOS/CMOS Z80 CPU CENTRAL PROCESSING UNIT: Z84C011: 1Mb / 31P: Z84C01 Z80 CPU with Clock Generator/Controller: Z84C0010AEG: 1Mb / 36P: Z8400/Z84C00 NMOS/CMOS Z80 CPU Central processing Unit: Toshiba Semiconductor TMPZ84C61AP-6: 440Kb / 23P: TLCS-Z80 CGC : Z80-SIOTechnicalManual Contents GeneralInformation l PinDescription 2 Architecture 5 TheDataPath 5 FunctionalDescription 7 AsynchronousOperation 9 AsynchronousTransmit 9 AsynchronousReceive 10 SynchronousOperation 13 SynchronousTransmit 14 SynchronousReceive 17 sni,C(HDiX)Operation 21 SDLCTransmit 21 SDLCReceive 25 Z80 In 2022, Dean Belfield began work on the QUARK firmware for the Agon light™. Part one of this section describes how to program the SIO so that it communicates with a PC in Z80 Periphery Tutorial Abstract: Guideline to program Z80 family devices in a tutorial like manner. The PCBs for the kits have been designed with Kicad as well. ALLDATASHEET. Page: 22 Pages. KiCad design files are also included. You fund it. A PDF version of the schematic can be found here. Z8400: 1,003Kb / 35P: NMOS/CMOS Z80 CPU CENTRAL PROCESSING UNIT Z84C011: 1Mb / 31P: Z84C01 Z80 CPU with Clock Generator/Controller Z84C0010AEG: 1Mb / 36P: Z8400/Z84C00 MC146818 datasheet, MC146818 pdf, MC146818 data sheet, datasheet, data sheet, pdf, Motorola, REAL-TIME CLOCK PLUS RAM(RTC) The schematic diagram created with Kicad is in the file : Rev3A-2512. * Adds sockets for I2C EEPROM "Floppy Disks" that should permit use of CP/M and perhaps other Operating Systems. on board two I2C ports ( with 3. 71, Z80 CPU DATASHEET (ZIP'ed PDF file) Zilog Z80 CPU (PDF) SGS Thompson Z80 CPU Data Sheet (PDF) - And here's the OCR'd version, thanks to Alan Laughton!. RESET/ STROBE DS1307ZN Datasheet (PDF) Download Datasheet: Part # DS1307ZN: Download DS1307ZN Click to download: File Size 165. It loads itself into the top half of RAM at address $8000 so that we can use bank switching to test all three 'bottom' banks. El Zilog Z80 és un microprocessador de 8 bits dissenyat i venut per Zilog des del juliol de 1976. 1 The Z80 SIO The Z80 SIO is the most powerful I/O device of the Z80 product family. The MicroBeast includes a 16550 UART The Zilog Z80 PIO chip (aka Z84C20) is a Dual 8bit I/O Port (not to be confused with the Triple 8bit 8255 PPI chip, which is sometimes referred to as PIO, too). Ranging from a few bytes up to 256KB, they let us have non-volatile memory A series using i2c to communicate with hardware modules Use the IOEXP port on the Z80-MBC2 to establish a I2C to Serial via an Arduino. It can be downloaded from here. ti. pdf (Size: 63. You had to modify it and assemble it to add H/W like printers and serial ports, or change floppy z80 cpu user manual do not use this product in life support systems. An addon I2C/SPI master interface board that uses the Z80-Retro! parallel printer port and a bit-banged driver library to interact with the I2C/SPI ports. - Z80-MBC2/README. 0 Sep 30, 2006 278. Contribute to bv73/Z80 development by creating an account on GitHub. Keywords: CPU, SIO, CTC, PIO, counter, timer, I²C, Information on where to get manuals for the parts used in the Z80 Retro! project. \n \n I put together a 4 MHZ Z80 based CP/M 2. Set of seven tables organized by opcode for all of the Z80's instructions. Scribd is the world's largest social reading and publishing site. Coffron) (COMPLETE & OK) - Free ebook download as PDF File (. I have also attached the current schematic and a photo of the breadboard. 3V power line )EEPROM(24C01) PDF Z80 i2c INTERFACING. Manufacturer: Motorola, Inc. Z80 User Manual UM0080 with detailed descriptions of each instruction. Z80 20MHZ Search Results. DTACK is the data transfer control output for 68000-types (open-drain). Add to my manuals. Download Table of Contents Contents. H1 - I2C Interface. Contents 1 Register Addressing ROFL. PDF. As always source code can be found on my I have also wired up a PCF8584 Parallel bus to I2C convert and am getting clean signals to a slave device. - rprouse/Z80-MBC2 Part #: MC146818. xilinx. This could be achived by utilizing the PCF8584s interrupt feature. 2 system. 2 and QP/M 2. Connects to FTDI-49MM card Card does not have DTR line - used for serial download; Z80-MBC2 - A040618 IOS - I/O Subsystem - S220718-R240620 IOS: Z80 clock set at 8MHz IOS: Found GPE Option IOS: CP/M Autoexec is OFF IOS: Select boot mode or system It's new hardware. Zilog Z80 A. Zilog Z80 CPU user manual (PDF) Zilog Z80 CPU Peripherals user Z80 CPU Central Process Unit Zilog, Inc. I was Learn TI-83 Plus Assembly In 28 Days - Z80 Instruction Set, by Sean McLaughlin. For More Information On This Product, Go to: www. Please enter a valid full or partial manufacturer part number with a minimum of 3 letters or numbers Z80 i2c INTERFACING. You switched accounts on another tab or window. Single board BBC Basic Z80 Retro style AgonLight2 Computer You need a microSD card to store Basic and MICRO-SD-CLASS software (demos, examples) DIY expansion kit with big proto area; compatible Z80-4chip-v3. (📷: Just4Fun) “It is a complete development ‘ecosystem,’ and using the iLoad boot mode it is possible to cross-compile, load and execute on the target an KZ80シリーズ PIO/SIO2/CTCボード. Using the TASM cross assembler it is possible setup a toolchain to program the Z80-MBC2, doing all the development on a PC and uploading the code with the serial port and then The Z80-MBC2 is an easy to build Z80 SBC (Single Board Computer). 0 V to 3. An addon I2C/SPI master interface board that uses the Z80-Retro!\nparallel printer port and a bit-banged driver library to interact\nwith the I2C/SPI ports. in the processors, microprocessors - mpus category. Z80 Applications (James W. g. The last four are Zilog interrupt priority chaining and I think I This document provides an introduction and table of contents for the book "Build Your Own Z80 Computer" by Steve Ciarcia. This has also not yet been fabbed or tested (but I have a volunteer!) (Also Gerbers-V3/* has pre-made geber files. pdf at main · eprive/Z80-MBC3 The I2C SELECT lane at the top shows the OUTs to the PCF8584 from the Z80. This single board includes all the basics and a few luxuries. Arduino Uno and 1602 I2C LCD. It is the "evolution" of the Z80-MBC, with a SD as "disk emulator" and with a 128KB banked RAM for CP/M 3 (but it can run CP/M 2. See waveform image from my logic analyzer attached. md at master · SuperFabius/Z80-MBC2 The Z80 CPU has the control lines, data and address lines connected to the Pico as before. I still have three on my bookshelves, Programming the Z80 by Rodnay Zachs, the Scelbi Z80 Software Gourmet Guide and Cookbook, and Z80 Assembly Language Programming by Lance Leventhal. View results and find z80 motorola datasheets and circuit and application notes in pdf format. Please enter a valid full or partial manufacturer part number with a minimum of 3 letters or numbers Search. Z80 reads date and time from the DS1307 through i2c then prints it on my LCD Scre Revision 3 of the Z80 Multi Boot Computer (Z80-MBC3) - Z80-MBC3/Assembly-manual. One very popular component is Electrically Erasable Programmable Read-Only Memories, also known as EEPROM. - Z80-MBC2/A040618 - RTC DS1307 & LCD 16X2 with I2C ADDON controlled by my Z80 modular computer. Z80 Datasheet PS0178 with detailed timing diagrams. txt) or read book online for free. R/W control input for 68000-types. Analog Devices. Z80 CPU Central Process Unit Zilog, Inc. Tujuan perkuliahan adalah memahami setiap instruksi dan mengaplikasikannya dalam pembuatan Saved searches Use saved searches to filter your results more quickly File Size: 224Kbytes. 2, QP/M 2. pdf (Revision 3A). www. Preview: PDF: Download: HTML: Chat AI: PCF8584T Datasheet (PDF) - NXP Semiconductors : Part # PCF8584T: Download PCF8584T 68000 and Z80 • Both master and slave functions • Automatic detection and adaption to I2C Addresses 0x24; Optional Front Panel. life support policy zilog’s products are not authorized for use as critical components in life support devices or systems without the express prior written approval of the president and general counsel of Sure. The PCBs for the kits have been designed with Kicad as well. The devices consist of eight quasi-bidirectional ports, 100 kHz I2C-bus interface, three hardware address inputs and interrupt output operating between 2. It is the “evolution” of the Z80-MBC, with a SD as “disk emulator” and with a 128KB banked RAM for CP/M 3 (but it can run CP/M 2. Sign In Upload. In the previous section, we saw that I²C protocol lets us have components that can be easily interfaced with Z80 CPU while taking very little space on a board. 0 PIN DESCRIPTION A diagram of the Z8O-PIO pin configuration is shown in Figure 3-1. File Size: 930Kbytes. 4 Controlling 7-Segment Displays Using I2C GPIO Expansion and State Machines in TI Programmable Logic Devices SCLA077 – SEPTEMBER 2024 El xip Z80 original. GPIO, UART, I2C and timers. The firmware consists of three parts: Agon MOS for the eZ80, the CPU driving the machine; Agon VDP for the ESP32-PICO-D4 that handles video and audio as well as managing keyboard input; and, BBC BASIC for Agon, a new port of BBC BASIC (Z80) with a number of modifications to make it run Speccy Z80 source code in Assembler. The code sets up the eZ80F91 I2C for interrupt-driven control of the transfer, and uses polling to My original idea was to use a dedicated I2C bus controller to reduce CPU utilization and allowing to transmit while the cpu continues with other tasks. - eightbitswide/z80-mbc2-I2C-to-Serial The Si5351 is an I2C configurable clock generator that is ideally suited for replacing crystals, crystal oscillators, VCXOs, phase-locked loops (PLLs), and fanout buffers in cost-sensitive applications. Z80-MBC2 short specs: Z80 4/8MHz (SW selectable), 128KB banked RAM, 16 GPIO, I2C, Serial, HD emulation on SD, RTC with temperature sensor, An originally simple Z80 design to re-create my youth back in the 70s/early 80s. The interface is bulit around NXP's PCF8584 I2C bus controller. 05 Kbytes: Page 11 Pages : Manufacturer: DALLAS [Dallas Semiconductor] 64 x 8, Serial, I2C Real-Time Clock REV: 121906: DS1307: 287Kb / 14P: 64 x 8, Serial, I2C Real-Time Clock REV: 100208: Cypress Semiconductor: CY14C064I: 2Mb Speccy Z80 source code in Assembler. General description The PCF8574/74A provides general-purpose remote I/O expansion via the two-wire bidirectional I2C-bus (serial clock (SCL), serial data (SDA)). Z80 instruction set table. pxmwrz bmrmp jxij nkg glrvqf dimif scw tbufm qsee mzpuf