capacitance keyboard encoder.
* 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 .
with less than 88 keys.
The keyboard scan is under complete control of the UM804.
UM82C01 is a CMOS LSI, which offers interface between microcomputer and capacitive keyboard matrix. 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.
The ke.
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