EM78P259N/260N
8-Bit Microprocessor with OTP ROM
4 •
Product Specification (V1.2) 05.18.2007
(This specification is subject to change without further notice)
5.2 EM78P260NP/M/KM
Symbol Pin No. Type Function
P70 16 I/O
General purpose input/output pin
Default value after a power-on reset
P60~P67 7~14 I/O
General purpose input/output pin
Open-drain
Default value after a power-on reset
P50~P57
1~4
17~20
I/O
General purpose input/output pin
Pull-high/pull-down
Default value after a power-on reset
Wake up from sleep mode when the status of the pin changes
CIN-, CIN+
CO
13, 12
11
I
O
“-“ : the input pin of Vin- of the comparator
“+” : the input pin of Vin+ of the comparator
Pin CO is the comparator output
Defined by IOC80 <4:3>
OSCI 17 I
Crystal type: Crystal input terminal or external clock input pin
RC type: RC oscillator input pin
OSCO 16 I/O
Crystal type: Crystal input terminal or external clock input pin.
RC type: clock output with a duration of one instruction cycle
External clock signal input
/RESET 5 I
If set as /RESET and remains at logic low, the device will be
reset
Voltage on /RESET/Vpp must not exceed Vdd during normal
mode
TCC, TCCA,
TCCB, TCCC
4, 8,
9, 10
I
External Timer/Counter input
TCC is defined by CONT <5>
TCCA is defined by IOC80 <1>
TCCB is defined by IOC90 <5>
TCCC is defined by IOC90 <1>
ADC0~ADC3
2, 3,
18, 19
I
Analog to Digital Converter
Defined by ADCON (R9) <1:0>
IR OUT 14 O
IR mode output pin, capable of driving and sinking
current=20mA when the output voltage drops to 0.7Vdd and
rise to0.3Vdd at Vdd=5V.
VREF 4 I
External reference voltage for ADC
Defined by ADCON (R9) <7>
/INT 7 I
External interrupt pin triggered by a falling or rising edge
Defined by CONT <7>
VDD 15 – Power supply
VSS 6 – Ground
