Download SN8F27E64

SN8F27E60 Series
8-Bit Flash Micro-Controller with Embedded ICE and ISP

Example: Set P4.1 to be general purpose input mode. P4CON.1 must be set as “0”.
; Check GCHS and CHS [3:0] status.
;If CHS[3:0] point to P4.1 (CHS[3:0] = 0001B), set
B0BCLR
FGCHS
GCHS=0
;If CHS[3:0] don’t point to P4.1 (CHS[3:0] ≠ 0001B), don’t
care GCHS status.
; Clear P4CON.
B0BCLR
; Enable P4.1 input mode.
B0BCLR
P4CON.1
; Enable P4.1 digital function.
P4M.1
; Set P4.1 as input mode.

Example: Set P4.1 to be general purpose output. P4CON.1 must be set as “0”.
; Check GCHS and CHS [3:0] status.
; If CHS [3:0] point to P4.1 (CHS [3:0] = 0001B), set
B0BCLR
FGCHS
GCHS=0.
; If CHS [3:0] don’t point to P4.1 (CHS [3:0] ≠ 0001B),
don’t care GCHS status.
; Clear P4CON.
B0BCLR
P4CON.1
; Set P4.1 output buffer to avoid glitch.
B0BSET
P4.1
; or
B0BCLR
P4.1
; Enable P4.1 output mode.
B0BSET
P4M.1
SONiX TECHNOLOGY CO., LTD
; Enable P4.1 digital function.
; Set P4.1 buffer as “1”.
; Set P4.1 buffer as “0”.
; Set P4.1 as input mode.
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Version 1.4