PD17012_15 Datasheet, PDF (251/320 Pages) Renesas Technology Corp – 4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DIGITAL TUNING SYSTEM HARDWARE

µPD17012, 17P012
LOOP2:
SKF1 KEYJ
BR KEYDEC
Processing B
; Determines if key input is latched
; Waits until key input is latched
BR
KEYDEC:
MOV
LD
SET2
SUB
SKT1
BR
KEY_END:
LOOP2
RPL, #.DM.RC SHR 3 AND 0EH
RC, KEY_IN
CAP, Z
RC, RB
; Stores key input data to latch
; Compares key input data after chattering with key input
; data before chattering wait
Z
START
; If data differ
; Stores key source data to RA, key input data before
; chattering to RB, and key input data after chattering to RC
Data Sheet U10101EJ4V0DS
249