STC micro STC8A8K64D4 Series - Page 30

STC8A8K64D4 Series Manual
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Pin number
name
type
description
LQFP64
LQFP48
LQFP44
PDIP40
52
40
37
39
P0.1
I/O
Standard IO port
AD1
I
Address bus
ADC9
I
ADC analog input 9
TxD3
O
Transmit pin of USART3
53
41
38
40
P0.2
I/O
Standard IO port
AD2
I
Address bus
ADC10
I
ADC analog input 10
RxD4
I
Serial input of UART4
54
P7.4
I/O
Standard IO port
SS_3
I
Slave selection of SPI (it is output with regard to
master)
ECI_3
I
External pulse input of PCA
55
P7.5
I/O
Standard IO port
MOSI_3
I/O
Master Output/Slave Input of SPI
56
P7.6
I/O
Standard IO port
MISO_3
I/O
Master Iutput/Slave Onput of SPI
SDA_3
I/O
Serial data line of I2C
57
P7.7
I/O
Standard IO port
SCLK_3
I/O
Serial Clock of SPI
SCL_3
I/O
Serial Clock line of I2C
58
42
39
P4.3
I/O
Standard IO port
WR
O
WRITE signal of external bus
RxD_4
I
Input of USART1
59
43
40
1
P0.3
I/O
Standard IO port
AD3
I
Address bus
ADC11
I
ADC analog input 11
TxD4
O
Transmit pin of USART4
60
44
41
2
P0.4
I/O
Standard IO port
AD4
I
Address bus
ADC12
I
ADC analog input 12
T3
I
Timer3 external input
61
45
42
3
P0.5
I/O
Standard IO port
AD5
I
Address bus
ADC13
I
ADC analog input 13
T3CLKO
O
Clock out of timer3
62
46
43
4
P0.6
I/O
Standard IO port
AD6
I
Address bus
ADC14
I
ADC analog input 14
T4
I
Timer4 external input
63
47
44
5
P0.7
I/O
Standard IO port
AD7
I
Address bus
T4CLKO
O
Clock out of timer4
64
48
1
6
P1.0
I/O
Standard IO port
ADC0
I
ADC analog input 0
PWM0_2
O
Enhanced PWM channel 0 output pin
RxD2
I
Input of USART12