Shanghai Belling-Systron Microelectronics Co., Ltd.
OSC1
OSC2
GND
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
OUT
1
2
3
4
24
23
22
21
PA7
PA6
VDD
PA5
PA4
PA3
PA2
PA1
PA0
EOSC2
EOSC1
RSTB
6
7
8
9
10
11
12
SOP-24
i/o
i/o
i/o
i/o
i/o
i/o
i/o
i/o
i/o
i/o
i/o
i/o
i/o
i/o
5
20
19
18
17
16
15
14
13
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
Name
OSC1
OSC2
GND
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
OUT
RSTB
EOSC1
EOSC2
PA0
PA1
PA2
PA3
PA4
PA5
I/O
input
output
Description
main oscillator input
main oscillator output
io port B 0
io port B 1
io port B 2
io port B 3
io port B 4
io port B 5
io port B 6
io port B 7
coding signal output
reset
RTC oscillator input
RTC oscillator output
io port A 0
io port A 1
io port A 2
io port A 3
io port A 4
io port A 5
source source ground
output
input
input
output
BELLING [ SHANGHAI BELLING CO., LTD. ]
