UMC UM82C01
UM82C01 is a CMOS LSI, which offers interface between microcomputer and capacitive keyboard matrix. The keyboard scan is under complete control of the UM804FEATURES
● 16x8 matrix, can build up to 128 key capacitance keyboard● Single chip with 16 scan drive outputs and 8 sense inputs
● Two types of package. 28 pin for 88 key KB and 40 pin for 128 key KB
● Keyboard scanning and encoding under complete control of the user's computer, especially UM8048 microcomputer
● Single 5V supply
● High-speed CMOS technology
● Serve as easy interface to UM8048
● New CMOS sense technology, CMOS analog sense circuit is built in
● Byte wide sense, higher performance than serial sense technology
● Wide UM8048 frequency range, 1M to 11 MHz UM8048 can be used
GENERAL DESCRIPTION
40 pin UM82C01-1 is capable of scanning up to 128 lowcost capacitive keys. 28 pin UM82C01-2 serve keyboard applications with less than 88 keys.