SONIX SN8P2977, Руководство пользователя

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SN8P2977
8-Bit Micro-Controller with Regulator, PGIA, 24-bit ADC
SONiX TECHNOLOGY CO., LTD
Page 65
Version 1.7
7.4 I/O PORT DATA REGISTER
0D0H Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
P0 P07 P06 P05 P04 P03 P02 P01 P00
Read/Write R/W R/W R/W R/W R/W R/W R/W R/W
After reset 0 0 0 0 0 0 0 0
0D1H Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
P1
- - - - - - P11 P10
Read/Write - - - - - - R/W R/W
After reset - - - - - - 0 0
0D2H Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
P2 P27 P26 P25 P24 P23 P22 P21 P20
Read/Write R/W R/W R/W R/W R/W R/W R/W R/W
After Reset 0 0 0 0 0 0 0 0
0D3H Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
P3 P37 P36 P35 P34 P33 P32 P31 P30
Read/Write R/W R/W R/W R/W R/W R/W R/W R/W
After Reset 0 0 0 0 0 0 0 0
Bit [7:0]
Pn0~Pn7: I/O port data buffer. (n = 0~1).
0 = Input low or output low.
1 = Input high or output high.
Example: Read data from input port.
B0MOV A, P0 ; Read data from Port 0
B0MOV A, P1 ; Read data from Port 1
Example: Write data to output port.
MOV A, #0FFH ; Write data FFH to all Port.
B0MOV P0, A
B0MOV P1, A
Example: Write one bit data to output port.
B0BSET P1.0 ; Set P1.0 to be
“1”.
B0BCLR P1.0 ; Set P1.0 to be
“0”.