Editing rockwell international/pps-4/10660

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{{Microprocessor
|name             = Rockwell PPS-4
<!--|image            = -->
|developer        = [[Rockwell International]]
|intro_date       = 3Q, 1972
|model            = 10660<br />12660
|transistors      =
|clock            = 256 kHz
|bus_width        = 4-bit
|lithography      = 
|mem_max          = 2KB
|mem_addressable  = 4KB
|gpio             = 31 ports<ref name=datasheet />
|package          = 42-pin [[QUIL]]<ref name=datasheet />
}}

The '''Rockwell PPS-4''' (aka '''PPS-4/1''') was a 4-bit [[microprocessor]] designed by [[Rockwell International]] and first produced at the 3rd quarter of 1972.<ref name=datasheet>[http://bitsavers.trailing-edge.com/pdf/rockwell/PPS-4/mm78.pdf Data Sheet]</ref> The [[chip]] came in a 42-pin [[quadruple in-line package]] and was fabricated using metal gate technology as opposed to the [[Intel 4004]] which used silicon gate technology. The PPS-4 was one of a handful of microprocessors introduced before 1975.<ref>[http://www.cpushack.com/2013/05/06/cpu-of-the-day-rockwell-pps-41-the-other-4-bit-processor/ CPU of the Day: Rockwell PPS-4/1 The other 4-bit Processor]</ref><ref name=antiquetech>[http://www.antiquetech.com/?page_id=796]</ref> Various Gottlieb's pinball machines use the PPS-4.<ref name=antiquetech /> Unlike the Intel 4004, the PPS-4 was produced and sold throughout the 1980s. Rockwell released a second generation version of the PPS-2 called [[PPS-4/2]] in 1975.

== System ==
Similarly to the [[Intel 4004]], the Rockwell PPS-4 required two additional support chips: a [[clock generator]] and [[ROM]] memory. The chip came in a 42-pin [[QIP]] package. 12 I/O terminals are available for general purpose I/O.

{| class="wikitable"
|-
! Model !! Description
|-
| PPS-4 || CPU
|-
| PPS-4/2 || CPU
|-
| 10706 || [[Clock generator]]
|-
| 10738 || [[Bus interface]]
|-
| 11049 || [[Interval timer]]
|-
| 10686 || [[General purpose I/O]]
|-
| 10696 || [[General purpose I/O]]
|-
| 10736 || dot matrix printer controller
|-
| 10788 || keyboard/display controller
|-
| 10789 || printer controller
|-
| 10815 || keyboard/printer controller
|-
| 10930 || [[Serial data controller]]
|-
| 15380 || dot matrix printer controller
|}

== Versions ==
The PPS-4 came in two versions: ''10660'' and the ''12660''. The difference between the two is unclear.

{| class="wikitable"
|-
! Manufacturer !! Model !! Package
|-
| Rockwell || PPS-4 || Black plastic, 42-pin QUIP
|}

== Instruction set ==
The PPS-40 came with a relatively large set of instruction.

== References ==
{{reflist}}

{{DEFAULTSORT:PPS-4, Rockwell}}
[[Category:4-bit microprocessors]]
[[Category:1972 microprocessors]]
[[Category:Microprocessor stubs]]
base frequency	0.199 MHz (1.98864e-4 GHz, 198.864 kHz) +
designer	Rockwell International +
die area	12 mm² (0.0186 in², 0.12 cm², 12,000,000 µm²) +
family	PPS-4 +
first launched	August 1972 +
full page name	rockwell international/pps-4/10660 +
instance of	microprocessor +
ldate	August 1972 +
manufacturer	Rockwell International +
max memory	0.00195 MiB (2 KiB, 2,048 B, 1.907349e-6 GiB, 1.862645e-9 TiB) +
max memory address	4 KiB +
max operating temperature	70 °C +
microarchitecture	PPS-4 +
min operating temperature	0 °C +
model number	PPS-4 +
name	Rockwell PPS-4 +
part number	10660 + and 12660 +
process	10,000 nm (10 μm, 0.01 mm) +
tdp	0.6 W (600 mW, 8.046e-4 hp, 6.0e-4 kW) +
transistor count	1,900 +
word size	4 bit (0.5 octets, 1 nibbles) +