SC9699P

HANGZHOU SILAN MICROELECTRONICS CO.,LTD

REV:1.0

2008.03.24

Http: www.silan.com.cn

Page 6 of 11

(Continued)

Pin no.

Pin name

I/O

Descriptions

24

IFin

I

IF signal input

25

AMIN

I

AM frequency counting signal input

26

FMIN

I

FM frequency counting signal input

27

AVSS

I

Ground for DTS PLL

28

MVDD

I

MCU and periphery power supply

29

MXI

I

75K oscillator input port

30

MXO

O

75K oscillator output port

31

MGND

I

MCU and periphery ground

32

INT4/PB.4

I/O

General purpose IO port, input bit by bit control with pull-up,

output pull-up close, Schmitt input

33

INT3/PB.3

I/O

General purpose IO port, input bit by bit control with pull-up,

output pull-up close, Schmitt input

34

INT2/PB.2

I/O

General purpose IO port, input bit by bit control with pull-up,

output pull-up close, Schmitt input

35

INT1/PB.1

I/O

General purpose IO port, input bit by bit control with pull-up,

output pull-up close, Schmitt input

36

INT0/PB.0

I/O

General purpose IO port, input bit by bit control with pull-up,

output pull-up close, Schmitt input

37

RXD/PC.7

I/O

General purpose IO port, input bit by bit control with pull-up,

output pull-up close and also used as serial data receiving.

38

TXD/PC.6

I/O

General purpose IO port, input bit by bit control with pull-up,

output pull-up close and also used as serial data receiving.

39

PC.5

I/O

General purpose IO port, input bit by bit control with pull-up,

output pull-up close

40

PC.4

I/O

General purpose IO port, input bit by bit control with pull-up,

output pull-up close

41

PC.3

I/O

General purpose IO port, open-drain, input bit by bit control with

pull-up, output forced to pull-up

42

PC.2

I/O

General purpose IO port, open-drain, input bit by bit control with

pull-up, output forced to pull-up

43

PC.1

I/O

General purpose IO port, open-drain, input bit by bit control with

pull-up, output forced to pull-up

44

PC.0

I/O

General purpose IO port, open-drain, input bit by bit control with

pull-up, output forced to pull-up

45

MRST

I

MCU reset

46

MTEST

I

MCU test port, connect to ground when normal working

47

VPP

I

OTP high voltage download

48

PH.7

I/O

Common IO port without pull-up or pull-down

(To be continued)