Semiconductor & Computer Engineering
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| − | The '''PPS-4''' (Parallel Processing System - 4-bit word) was a [[microprocessor family|family]] of {{arch|4}} [[microprocessor]] chips designed by [[Rockwell International]] and introduce in 3rd quarter of 1972. | + | The '''PPS-4''' (Parallel Processing System - 4-bit word) was a [[microprocessor family|family]] of {{arch|4}} [[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 {{\|11660|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 {{rockwell|PPS-4/1}} ("/1" being a single-chip microcomputer) was actually a [[microcontroller]], including the program memory internally. | 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 {{\|11660|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 {{rockwell|PPS-4/1}} ("/1" being a single-chip microcomputer) was actually a [[microcontroller]], including the program memory internally. | ||
Latest revision as of 16:26, 19 May 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 0.5 octets
1 nibbles |
| 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.
History[edit]
 |
This section is empty; you can help add the missing info by editing this page. |
Members[edit]
| 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 |
2nd source[edit]
National semiconductor later became a second source for the PPS-4.
Applications[edit]
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[edit]
| |
This section is empty; you can help add the missing info by editing this page. |
Instruction set[edit]
| |
This section is empty; you can help add the missing info by editing this page. |
Documents[edit]
| 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 + |
| word size | 4 bit (0.5 octets, 1 nibbles) + |