Texas Instruments PocketMate 140

Date of introduction:  1998 Display technology:  LCD 
New price:   Display size:  12 char + 2*12 digits 
Size:  3.5" x 5.3" x 0.5"
 88 x 134 x 13 mm3
Weight:  3.5 ounces, 98 grams Serial No:  0153791
Batteries:  2*CR2025 Date of manufacture:  mth 10 year 1999
AC-Adapter:   Origin of manufacture:  Thailand (C)
Precision:  10 Integrated circuits:  single-chip CPU
 RAM: 32k Bytes
Memories:  34k Bytes RAM    
Program steps:   Courtesy of:  Joerg Woerner
    Download manual:   (EU: 7.6 MByte)

PM-140_BACK.jpg (383420 Byte)The PocketMate 140 was introduced together with the smaller siblings PocketMate 100 and PocketMate 120 late in the market. The PocketMate 140 is the successor of the PS-3960i.

The Telephone Directory stores names, addresses and telephone numbers
The Scheduler stores appointments, meeting times and reminders
A flexible clock with 12-hour AM/PM or 24-hour time showing day of week
A calendar displays day of week and year of any schedule entry
A calculator with 10-digits display capacity and 12-digits of accuracy
World time of 30 cities in all 24 time zones supporting one home city and one world city

The display of the PocketMate 140 consists - like the PocketMate 100 and 120 - of one line for alphanumeric characters and two lines supporting only numbers but is backlight illuminated.

PM-140_PCB.jpg (580522 Byte)Dismantling this PocketMate 140 manufactured in October 1999 by Compal Electronics in Thailand reveals a very clean architecture based on a Toshiba Application Specific CPU and an additional memory chip with 32k Byte capacity.

PM-140_COB.jpg (334541 Byte)The PocketMate 100 series is based on Chip-on-Board (COB) technology and we can't decipher the manufacturer and types of the two Integrated Circuits hidden under the two epoxy blobs.

All three members of the PocketMate 100 series make use of an identical printed circuit board which differ only in the populated components:

Model Integrated
PocketMate 100 2k Bytes --- ---
PocketMate 120 2k Bytes 8k Bytes ---
PocketMate 140 2k Bytes 32k Bytes Yes

The design of the PocketMate 140 fits neatly with the PocketMate 300 series.

The whole PocketMate series was discontinued in the year 2000. 


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If you have additions to the above article please email:

Joerg Woerner, July 5, 2002. No reprints without written permission.