Keil Logo

Technical Specifications

CPU Intel 8xC251Sx, Intel 8xC251Tx,
Atmel 80C251A1, Atmel 80C251G1
BUS 8-bit multiplexed
Wait States 0
Power Supply 9 Volt AC/DC, 500mA Typical
Devices Supported Standard 32-pin JEDEC
RAM Supported 256 KB
RAM Provided 256 KB
ROM Supported 128 KB
ROM Provided 128 KB
Serial Ports 2 (1 on-chip, 1 external 16550)
Prototyping Area 3.75" x 2" (95mm x 50mm)
  Arm logo
Important information

This site uses cookies to store information on your computer. By continuing to use our site, you consent to our cookies.

Change Settings

Privacy Policy Update

Arm’s Privacy Policy has been updated. By continuing to use our site, you consent to Arm’s Privacy Policy. Please review our Privacy Policy to learn more about our collection, use and transfers
of your data.