EM78P142
8-Bit Microprocessor with OTP ROM
4 Pin Description
4.1 EM78P142SS10
Symbol Pin No.
P50~P53
P55
1~3, 9~10
P67
6
P70~P71
8, 4
ADC0~ADC6
1~3, 6
8~10
/RESET
4
OSCI
9
OSCO
8
VDD
7
VSS
5
Type
I/O
I/O
I/O
I
I
I
O
–
–
Function
5-bit General purpose input/output pins
Pull-high/Pull-down Function
Wake up from Sleep/Idle mode when the pin status
changes
Default value at power-on reset
1-bit General purpose input/output pin
Pull-high/Open-drain Function
Default value at power-on reset
2-bit General purpose input/output pins
Default value at power-on reset
When P71 is used as output function, it is an open drain
pin
7-bit channel Analog-to-Digital Converter with 12-bit
resolution.
Defined by ADCON (R9)<1:0>
If it remains at logic low, the device will be reset
Wake-up from Sleep/Idle mode when pin status
changes
Voltage on /RESET must not exceed Vdd during normal
mode
Crystal type: Crystal input terminal.
RC type: RC oscillator input pin
Crystal type: Output terminal for crystal oscillator.
RC type: Clock output with a duration of one instruction
cycle time.
External clock signal input.
Power supply
Ground
Product Specification (V1.0) 01.25.2008
•3
(This specification is subject to change without further notice)