RSS

Intro to the First Microprocessor Chips

1973: A CPU “uses P-channel MOS and is contained in 1, 2, 3 or 4 LSI standard dual-in-line packages from 16 – 42 pins per package”.

Hank Smith, Microprocessor Marketing Manager, Intel Corp.
IEEE 1973 WESCON Professional Program Session 11 Proceedings

The F14A microprocessor chip set, the MP944, consisted of six MOS-LSI chips. These are the Parallel Multiplier Unit (PMU), the Parallel Divider Unit (PDU), the Random Access Memory storage (RAM), the Read Only Memory (ROM), the Central Processing Unit (CPU), and the Steering Logic Unit (SLU). The complete microprocessor system used 1-PMU, 1-PDU, 1-CPU, 3-RAS’s, 2-SLU’s, and 19-ROM’s. Here are the stats on the chips. All chip circuit design and layout was engineered by the staff of American Microsystems.

MP944 Chip Stats
MOS Process: P-Channel Enhanced Mode

Arithmetic word length: 20-bits (19 data plus sign bit)
Arithmetic Units Operation: Simultaneous Parallel Processing
Operational Mode: Parallel Arithmetic / Pipelined serial data transfer
Operating Temperature: -55 deg C to +125 deg C (mil spec)
Clock speed: 375Khz
Clock signal level: -28 volts
Logic signal level: -10 volts


Name # of Devices Chip Size -mils Package Size # Chips In System Total Devices
PMU 1063 150 x 153 24 pin DIL 1 1063
PDU 1241 141 x 151 24 pin DIL 1 1241
CPU 743 120 x 130 24 pin DIL 1 743
RAM 2330 115 x 130 14 pin DIL 3 6990
SLU 771 128 x 133 24 pin DIL 3 2313
ROM 3268 143 x 150 14 pin DIL 19 62092
TOTALS – -> 28 74442
Copy the code below to your web site.
x