Semiconductor & Computer Engineering
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Revision as of 01:52, 21 January 2016
| Rockwell PPS-4 | |
| |
| Rockwell PPS-4 found in the PC-1001 programmable calculator. PPS-4 (part 10660) on the upper-right corner along with the 10706 clock generator, GP I/O 10696, ROM (A05xx), RAM (10432), and a 7400 series 74154 decoder. | |
| Developer | Rockwell International |
| Manufacturer | Rockwell International |
| Production | August, 1972-1981 |
| Architecture | 4-bit words, 8-bit instruction |
| Word size | 4-bit "-bit" is not declared as a valid unit of measurement for this property.
|
| Technology | pMOS |
| Clock | 40 kHz-256 kHz |
| Package | QIL42 |
The PPS-4 (Parallel Processing System - 4-bit word) was a family of 4-bit microprocessor chips designed by Rockwell International and introduce in 3rd quarter of 1972.
The original PPS-4 chipset was designed to provide complete functionality in three chips - CPU, program memory, and a clock generator. A later version known as the PPS-4/2 ("/2" denoting a two-chip system) eliminated the external clock generator chip by incorporating it internally. A third variation known as the PPS-4/1 ("/1" being a single-chip microcomputer) was actually a microcontroller, including the program memory internally.
Contents
History
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This section is empty; you can help add the missing info by editing this page. |
Members
| Part | Function | Description |
|---|---|---|
| 10660 | CPU | Original "PPS-4" CPU |
| 11660 | CPU | "PPS-4/2" CPU |
| 12660 | CPU | Same as 10660 |
| 10432 | RAM | |
| 10686 | General purpose I/O | |
| 10696 | General purpose I/O | |
| 10706 | clock | |
| 10731 | com data interface | |
| 10738 | Bus I/O | |
| 10736 | dot matrix printer controller | |
| 10788 | keyboard/display controller | |
| 10789 | printer controller | |
| 10815 | keyboard/printer controller | |
| 10930 | serial data controller | |
| 11049 | interval timer | |
| 15380 | dot matrix printer controller | |
| A05xx | ROM | |
| A07xx | ROM | |
| A08xx | ROM | |
| A17xx | ROM | |
| A21xx | ROM | |
| A22xx | ROM | |
| A23xx | ROM | |
| A52xx | ROM |
PPS-4/1 microcontrollers
Rockwell expanded the family by introducing the PPS-4/1 which is a microcontroller incorporating the PPS-4 CPU, the program memory, and clock generator internally. The PPS-4/1 were considerably slower than their multi-chip counterparts, operating at only up to half of their frequency (40 KHz-100 KHz).
| Part | RAM | ROM | I/O Ports | Notes |
|---|---|---|---|---|
| MM75 | 48x4 bits | 640x8 bits | 22 | Reduced I/O |
| MM76 | 48x4 bits | 640x8 bits | 31 | |
| MM76C | 48x4 bits | 640x8 bits | 39 | |
| MM76D | 48x4 bits | 640x8 bits | 37 | |
| MM76E | 48x4 bits | 1024x8 bits | 31 | |
| MM77 | 96x4 bits | 1344x8 bits | 31 | |
| MM78 | 128x4 bits | 2048x8 bits | 31 |
2nd source
National semiconductor later became a second source for the PPS-4.
Applications
While not as known as the other chips like the MCS-4, the PPS-4 certainly never received as much mainstream exposure. Nevertheless, it did find its way into many industrial and consumer products such as toys, desktop calculators, games, and other electronic appliances.
Design
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This section is empty; you can help add the missing info by editing this page. |
Instruction set
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This section is empty; you can help add the missing info by editing this page. |
Documents
| designer | Rockwell International + |
| full page name | rockwell international/pps-4 + |
| instance of | integrated circuit family + |
| main designer | Rockwell International + |
| manufacturer | Rockwell International + |
| name | Rockwell PPS-4 + |
| package | QIL42 + |
| technology | pMOS + |