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TMS1000 Series - TI
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Not to be confused with TMS0100.

TI TMS1000 Series
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Developer Texas Instruments
Manufacturer Texas Instruments
Production 1974-1981
Release date 1974
Word size 4 bit
0.5 octets
1 nibbles
Process 8 μm
8,000 nm
0.008 mm
Technology pMOS, nMOS, CMOS
Clock 100 KHz-400 KHz
Package DIP28, DIP40

The TMS1000 Series (or TMS 1000) was a family of 4-bit microcontrollers designed and manufactured by Texas Instruments in the early 1970s. Originally made using pMOS technology, TI later expended the family into nMOS and CMOS.


In September of 1971, TI finished the design for their TMS0100 single-chip calculators. Designs where done by the Texas Instruments engineers Gary Boone and Michael Cochran. Based on their design of the TMX1795, Gary patented the invention for a single-chip processing machine on Aug 31, 1971. On Sep 4 1973, he was awarded U.S. Patent 3,757,306. Building on top of their experiences with the TMS0100 and Boone's 8-bit microprocessor prototype they went on to design the 4-bit TMS1000 microcontroller series. Boone was later awarded U.S. Patent 4,074,351 for the modern microcontroller.

After being slightly refined, the chip was released to general market in 1974. A few dozen different variations were created with various ROM and RAM sizes. Due to its cheap price, the TMS1000 family enjoyed a tremendous success in consumer electronics.


The TMS1000 was cheap enough to be used in everything from TI's own calculators to microwave ovens, washers, jukeboxes, video games, toys, games, and thousands of other electronic products. Over one hundred million processors were sold.

Museum displays[edit]

  • TMS1000, Computer History Museum - note that the description on the museum website is actually incorrect. The chip is correctly identified as TMS1000NL, however the description is confusing it with TI's primitive calculator chip TMS1802C of the TMS0100 series, which is unrelated to the TMS1000 series, despite the similar numbering used.


Part Number ROM RAM I/O Pins Technology Notes
TMS1000 1KB 64x4 23 pMOS
TMS1000C 1KB 64x4 23 CMOS Identical to TMS1000, CMOS
TMS1018 - 64x4 4 pMOS
TMS1070 1KB 64x4 pMOS Built-in VF display controllers
TMS1098 - 128x4 pMOS
TMS1099 - 64x4 pMOS
TMS1099C - 64x4 CMOS Identical to TMS1099, CMOS
TMS1100 2KB 128x4 pMOS
TMS1117 2KB 128x4 pMOS
TMS1200 1KB 64x4 pMOS
TMS1200C 1KB 64x4 CMOS Identical to TMS1200, CMOS
TMS1270 1KB 64x4 pMOS
TMS1300 2KB 128x8 23 pMOS
TMS1400 4KB 128x4 22 pMOS
TMS1600 4KB 128x4 33 pMOS
TMS1700 512B 32x4 21 pMOS
TMS2000 1KB 64x4 nMOS nMOS version of TMS1000
TMS2100 2KB 128x4 nMOS nMOS version of TMS1100
TMS2200 1KB 64x4 nMOS nMOS version of TMS1200
TMS2300 2KB 128x8 nMOS nMOS version of TMS1300
TMS2098 - 128x4 nMOS engineering sample
TMS2099 - 64x4 nMOS engineering sample


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The TMS 1000 had a relatively simple design with only 43 instructions and 2 general purpose registers. Similar to the Intel 4004, the chip only had a single level of stack and no interrupts.





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Facts about "TMS1000 Series - TI"
designerTexas Instruments +
full page nameti/tms1000 +
instance ofintegrated circuit family +
manufacturerTexas Instruments +
packageDIP28 + and DIP40 +
process8,000 nm (8 μm, 0.008 mm) +
technologypMOS +, nMOS + and CMOS +
word size4 bit (0.5 octets, 1 nibbles) +