SC9308
SHARED PIN DESCRIPTION
Pin no.
12
Shared pin
TXD
I/O
O
I
Descriptions
Serial communication data output
13
RXD
Serial communication data input
External interrupt input
I
1-4
5
INT0-INT3
TCL0
I
External counting pulse/clock input of timer 0
External counting pulse/clock input of timer 1
Buzzer signal output
I
6
TCL1
BUZ
O
I
8
9~11
12
KS0-KS2
TCLO0
Key scan input, can generate interrupt
Frequency division output of timer 0
Frequency division output of timer 1
O
O
－
13
TCLO1
16
VPP
High voltage pin, when download OTP, connects to 12V voltage
General purpose I/O port PORTE
31~38
I/O
I/O
I
PE0~PE7
PF0~PF5
XIN4M
39~44
21
General purpose I/O port PORTF
High frequency crystal input<ADC channel forbids>
High frequency crystal output <ADC channel forbids>
O
22
XOUT4M
FUNCTION DESCRIPTION
SC9308 has embedded SC65X core and 8K-byte OTP program memory, the data memory is 384-byte. Built-in
RC oscillator generates 3.2MHz clock frequency, and after 1/2,1/4 divided frequency, It can also be used as
system main clock together with external 75KHz crystal or extended high speed clock by PC4/5 to implement
applications in different modes, thus to maximize reduce the power consumption. The built-in counting circuit can
count the local oscillator signal frequency. In addition, it has three 8-bit counters T0/T1/T2. T0/T1 can be used
separately and also be used as 16-bit counter. The built-in RTC module can provides powerful calendar/alarm
functions, and provides 4 kinds of frequency BUZ signals. PA/B/C/E/F can provide max. 31 I/O ports, where
PA/B has pull-up configuration and selectable open-drain output function, PC can be shared as ADC analog pin
of ADC, PE/F can be used as LCD display data scan output. LCD driver can drive seven 8-segment display in
maximum, and bias voltage 1/3 and 1/2 are selectable, duty is 1/2, 1/3, 1/4 programmable control to meet the
various display requirements.
MCU Address Space
MCU uses 16-bit address bus, the maximum addressing space is 64-kByte (0000H~FFFFH). The address
assignment of memory space is as follows:
HANGZHOU MICROELECTRONICS CO.,LTD
REV:1.1
2008.10.20
Http://www.silan.com.cn
Page 6 of 17
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