STC micro STC8A8K64D4 Series - Page 26

STC8A8K64D4 Series Manual
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Pin number
name
type
description
LQFP64
LQFP48
LQFP44
PDIP40
10
6
5
10
P1.4
I/O
Standard IO port
ADC4
I
ADC analog input 4
PWM4_2
O
Enhanced PWM channel 4 output pin
MISO
I/O
Master Iutput/Slave Onput of SPI
SDA
I/O
Serial data line of I2C
CCP3
I/O
Capture input and pulse output of PCA
11
7
6
P4.4
I/O
Standard IO port
RD
O
READ signal of external bus
TxD_4
O
Transmit pin of USART1
12
8
7
11
P1.5
I/O
Standard IO port
ADC5
I
ADC analog input 5
PWM5_2
O
Enhanced PWM channel 5 output pin
SCLK
I/O
Serial Clock of SPI
SCL
I/O
Clock line of I2C
CCP2
I/O
Capture input and pulse output of PCA2
13
9
8
12
P1.6
I/O
Standard IO port
ADC6
I
ADC analog input 6
RxD_3
I
Input of USART1
PWM6_2
O
Enhanced PWM channel 6 output pin
MCLKO_2
O
Main clock output
CCP1
I/O
Capture input and pulse output of PCA1
XTALO
O
Connect to external oscillator
14
10
9
13
P1.7
I/O
Standard IO port
ADC7
I
ADC analog input 7
TxD_3
O
Transmit pin of USART 1
PWM7_2
O
Enhanced PWM channel 7 output pin
CCP0
I/O
Capture input and pulse output of PCA0
XTALI
I
Connect to external oscillator
15
11
10
14
ADC_AGnd
GND
ADC Ground
16
12
11
15
AVref
I
Reference voltage pin of ADC
17
13
12
16
ADC_AVcc
VCC
ADC Power Supply
18
14
13
17
P5.4
I/O
Standard IO port
NRST
I
Reset pin (low level reset)
MCLKO
O
Main clock output
19
15
14
18
Vcc
VCC
Power Supply
20
16
15
19
P5.5
I/O
Standard IO port
21
17
16
20
Gnd
GND
Ground