Port Data Register (Px); Ports Mode Registers (Pxm0, Pxm1) - STC micro STC8A8K64D4 Series Reference Manual

STC8A8K64D4 Series Manual
P2IE P2 Input Enable Control Register
P3IE P3 Input Enable Control Register
P4IE P4 Input Enable Control Register
P5IE P5 Input Enable Control Register
P6IE P6 Input Enable Control Register
P7IE P7 Input Enable Control Register

9.1.1 Port Data Register (Px)

Symbol Address
P0 80H
P1 90H
P2 A0H
P3 B0H
P4 C0H
P5 C8H
P6 E8H
P7 F8H
Read and write port status
Write 0: Output low to port buffer.
Write 1: Output high to port buffer.
Read: Read the level on the port pin directly.

9.1.2 Ports Mode Registers (PxM0, PxM1)

Symbol Address
P0M0 94H
P0M1 93H
P1M0 92H
P1M1 91H
P2M0 96H
P2M1 95H
P3M0 B2H
P3M1 B1H
P4M0 B4H
P4M1 B3H
P5M0 CAH
P5M1 C9H
P6M0 CCH
P6M1 CBH
P7M0 E2H
P7M1 E1H
Configure the mode of the ports as shown below.
PnM1.x PnM0.x
0 0
0 1
1 0
1 1
Note: When an I/O port is selected as the ADC input channel, the PxM0/PxM1 register must be set to set the I/O port
mode to input mode. In addition, if the ADC channel still needs to be enabled after the MCU enters the power-down
mode/clock stop mode, you need to set the PxIE register to close the digital input to ensure that there will be no
additional power consumption.
P27IE P26IE
FE32H
FE33H P37IE P36IE
FE34H P47IE P46IE
FE35H -
FE36H P67IE P66IE
FE37H P77IE P76IE
B7 B6
P0.7 P0.6
P1.7 P1.6
P2.7 P2.6
P3.7 P3.6
P4.7 P4.6
- -
P6.7 P6.6
P7.7 P7.6
B7 B6
P07M1 P06M1
P07M0 P06M0
P17M1 P16M1
P17M0 P16M0
P27M1 P26M1
P27M0 P26M0
P37M1 P36M1
P37M0 P36M0
P47M1 P46M1
P47M0 P46M0
- -
- -
P67M0 P66M0
P67M1 P66M1
P77M0 P76M0
P77M1 P76M1
Pn.x mode
quasi bidirectional mode
push-pull output mode
high-impedance input mode
open drain mode
P25IE P24IE
P35IE P34IE
P45IE P44IE
- P55IE P54IE
P65IE P64IE
P75IE P74IE
B5 B4
P0.5 P0.4
P1.5 P1.4
P2.5 P2.4
P3.5 P3.4
P4.5 P4.4
P5.5 P5.4
P6.5 P6.4
P7.5 P7.4
B5 B4
P05M1 P04M1 P03M1
P05M0 P04M0 P03M0
P15M1 P14M1 P13M1
P15M0 P14M0 P13M0
P25M1 P24M1 P23M1
P25M0 P24M0 P23M0
P35M1 P34M1 P33M1
P35M0 P34M0 P33M0
P45M1 P44M1 P43M1
P45M0 P44M0 P43M0
P55M1 P54M1 P53M1
P55M0 P54M0 P53M0
P65M0 P64M0 P63M0
P65M1 P64M1 P63M1
P75M0 P74M0 P73M0
P75M1 P74M1 P73M1
-
P23IE P22IE P21IE
P33IE P32IE P31IE
P43IE P42IE P41IE
P53IE P52IE P41IE
P63IE P62IE P41IE
P73IE P72IE P41IE
B3 B2 B1
P0.3 P0.2 P0.1
P1.3 P1.2 P1.1
P2.3 P2.2 P2.1
P3.3 P3.2 P3.1
P4.3 P4.2 P4.1
P5.3 P5.2 P5.1
P6.3 P6.2 P6.1
P7.3 P7.2 P7.1
B3 B2
P02M1 P01M1
P02M0 P01M0
P12M1 P11M1
P12M0 P11M0
P22M1 P21M1
P22M0 P21M0
P32M1 P31M1
P32M0 P31M0
P42M1 P41M1
P42M0 P41M0
P52M1 P51M1
P52M0 P51M0
P62M0 P61M0
P62M1 P61M1
P72M0 P71M0
P72M1 P71M1
P20IE
1111,1111
P30IE 1111,1111
P40IE 1111,1111
P50IE xx11,1111
P60IE 1111,1111
P70IE 1111,1111
B0
P0.0
P1.0
P2.0
P3.0
P4.0
P5.0
P6.0
P7.0
B1 B0
P00M1
P00M0
P10M1
P10M0
P20M1
P20M0
P30M1
P30M0
P40M1
P40M0
P50M1
P50M0
P60M0
P60M1
P70M0
P70M1
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