STC micro STC8A8K64D4 Series - Page 27

STC8A8K64D4 Series Manual
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Pin number
name
type
description
LQFP64
LQFP48
LQFP44
PDIP40
22
18
17
P4.0
I/O
Standard IO port
WR_3
O
WRITE signal of external bus
RxD2_2
I
Input of USART2
23
P6.4
I/O
Standard IO port
PWM4_3
O
Enhanced PWM channel 4 output pin
24
P6.5
I/O
Standard IO port
PWM5_3
O
Enhanced PWM channel 5 output pin
25
P6.6
I/O
Standard IO port
PWM6_3
O
Enhanced PWM channel 6 output pin
26
P6.7
I/O
Standard IO port
PWM7_3
O
Enhanced PWM channel 7 output pin
27
19
18
21
P3.0
I/O
Standard IO port
RxD
I
Input of USART1
CCP3_4
I/O
Capture input and pulse output of PCA3
INT4
I
External interrupt 4
28
20
19
22
P3.1
I/O
Standard IO port
TxD
O
Transmit pin of USART1
CCP2_4
I/O
Capture input and pulse output of PCA2
29
21
20
23
P3.2
I/O
Standard IO port
INT0
I
External interrupt 0
CCP1_4
I/O
Capture input and pulse output of PCA1
SCLK_4
I/O
Serial Clock of SPI
SCL_4
I/O
Serial Clock line of I2C
30
22
21
24
P3.3
I/O
Standard IO port
INT1
I
External interrupt 1
CCP0_4
I/O
Capture input and pulse output of PCA0
MISO_4
I/O
Master Iutput/Slave Onput of SPI
SDA_4
I/O
Serial data line of I2C
31
23
22
25
P3.4
I/O
Standard IO port
T0
I
Timer0 external input
T1CLKO
O
Clock out of timer 1
MOSI_4
I/O
Master Output/Slave Input of SPI
CMPO
O
Output of comparator