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Latest revision | Your text | ||
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| production end = 1981 | | production end = 1981 | ||
| arch = 4-bit words, 8-bit instruction | | arch = 4-bit words, 8-bit instruction | ||
− | | word = 4 bit | + | | word = 4-bit |
| proc = <!-- process, e.g. "8 μm" --> | | proc = <!-- process, e.g. "8 μm" --> | ||
| tech = pMOS | | tech = pMOS | ||
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| package = QIL42 | | package = QIL42 | ||
}} | }} | ||
− | 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 | + | 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 {{ | + | 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 {{\|10660|PPS-4/1}} ("/1" being a single-chip microcomputer) was actually a [[microcontroller]], including the program memory internally. |
== History == | == History == | ||
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|- | |- | ||
| {{\|10660}} || [[CPU]] || Original "'''PPS-4'''" CPU | | {{\|10660}} || [[CPU]] || Original "'''PPS-4'''" CPU | ||
+ | |- | ||
|- | |- | ||
| {{\|11660}} || [[CPU]] || "'''PPS-4/2'''" CPU | | {{\|11660}} || [[CPU]] || "'''PPS-4/2'''" CPU | ||
− | |||
− | |||
|- | |- | ||
| {{\|10432}} || [[RAM]] || | | {{\|10432}} || [[RAM]] || | ||
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| {{\|A08xx}} || [[ROM]] || | | {{\|A08xx}} || [[ROM]] || | ||
|- | |- | ||
− | | {{\|A17xx}} || [[ROM]] || | + | | {{\|A17xx}} || [[ROM]] || This is the 2nd chip used with the {{\|11660}} ''PPS-4/2'' CPU |
|- | |- | ||
| {{\|A21xx}} || [[ROM]] || | | {{\|A21xx}} || [[ROM]] || | ||
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|- | |- | ||
| {{\|A52xx}} || [[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). | ||
+ | {| class="wikitable sortable" | ||
+ | |- | ||
+ | ! Part !! RAM !! ROM !! I/O Ports !! Notes | ||
+ | |- | ||
+ | | {{\|MM75}} || 48x4 bits || 640x8 bits || 22 || Reduced I/O | ||
+ | |- | ||
+ | | {{\|MM76}} || 48x4 bits || 1024x8 bits || 31 || | ||
+ | |- | ||
+ | | {{\|MM77}} || 96x4 bits || 1344x8 bits || 31 || | ||
+ | |- | ||
+ | | {{\|MM78}} || 128x4 bits || 2048x8 bits || 31 || | ||
|} | |} | ||
Facts about "PPS-4 - Rockwell International"
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) + |