EM78P350N
8-Bit Microprocessor with OTP ROM
5.2 EM78P351
Symbol
Pin No. Type
Function
12~13
17~18
27~30
8-bit General purpose input/output pins
Default value at power-on reset
P50~P57
I/O
8-bit General purpose input/output pins
Default value at power-on reset
19~26
P60~P67
P70~P77
I/O
I/O
31~32
1~6
8-bit General purpose input/output pins
Default value at power-on reset
7~9
5-bit General purpose input/output pins
Default value at power-on reset
P80 ~ P84
INT0, INT1
Ain0~Ain7
I/O
11, 16
17, 18
I
I
External interrupt pin triggered by falling edge
8-bit Analog-to-Digital Converter
Defined by AISR (Bank 2 R8) <0 : 7>
19~26
PWM1
PWM2
PWM3
31
32
1
Pulse width modulation outputs
Defined by PWMCON (Bank 1-R5)<5 : 7>
O
BO
11
O
I
Buzzer output driver
External reference voltage for ADC
Defined by ADCON (Bank 2 R9) <7>.
VREF
16
“-“ : the input pin of Vin- of the comparator
“+” : the input pin of Vin+ of the comparator
Pin CO is the comparator output
CIN-
CIN+
CO
I
I
O
27
28
29
10
30
Defined by CMPCON (IOCA) <0:1>
General-purpose Input only
If it remains at logic low, the device will be reset
Wake-up from sleep mode when pin status changes
Voltage on /RESET must not exceed Vdd during normal
mode
/RESET
I
Real time clock/counter with Schmitt Trigger input pin. It
must be tied to VDD or VSS if not in use.
TCC
I
I
I
CNTR1/
CNTR2
5
6
Counter 1 / Counter 2 with Schmitt Trigger input pin.
Sin pin is used to input serial data signals by software.
Sin pin is also used as Port P82.
Sin
9
8
Sout pin is used to input serial data signals by software.
Sout pin is also used as Port P81.
Sout
O
Sck pin is used to input and output synchronous clock
signals for serial data transfer by software.
Sck
7
I/O
Sck pin is also used as Port P80.
Crystal type: Crystal input terminal or external clock input
OSCI
13
I
pin
RC type: RC oscillator input pin
Crystal type: Output terminal for crystal oscillator or external
clock input pin.
RC type: Clock output with a duration of one instruction
cycle time. The prescaler is determined by the
CONT register.
OSCO
12
O
External clock signal input.
XIN
I
Low crystal 32.768kHz input
Low crystal 32.768kHz output
Power supply
2
3
XOUT
VDD
VSS
O
–
–
15
13
Ground
Product Specification (V 1.0) 09.14.2006
(This specification is subject to change without further notice)
• 5
ELAN [ ELAN MICROELECTRONICS CORP ]
