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Difference between revisions of "rockwell international/pps-4"
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| {{\|10660}} || [[CPU]] || Original "'''PPS-4'''" CPU
 
| {{\|10660}} || [[CPU]] || Original "'''PPS-4'''" CPU
 
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| {{\|11660}} || [[CPU]] || "'''PPS-4/2'''" CPU
 
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| {{\|11660}} || [[CPU]] || "'''PPS-4/2'''" CPU
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| {{\|10660|12660}} || [[CPU]] || Same as 10660
 
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| {{\|10432}} || [[RAM]] ||
 
| {{\|10432}} || [[RAM]] ||

Revision as of 02:51, 21 January 2016

Rockwell PPS-4
Rockwell PPS4 in Sharp PC-1001.jpg
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.

History

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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 This is the 2nd chip used with the 11660 PPS-4/2 CPU
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

New text document.svg This section is empty; you can help add the missing info by editing this page.

Instruction set

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Documents

designerRockwell International +
full page namerockwell international/pps-4 +
instance ofintegrated circuit family +
main designerRockwell International +
manufacturerRockwell International +
nameRockwell PPS-4 +
packageQIL42 +
technologypMOS +