EM78P259N/260N
8-Bit Microprocessor with OTP ROM
5.2 EM78P260NP/M/KM Pin Description
Symbol
Pin No. Type
Function
VDD
15
17
–
I
Power supply.
■ XTAL type Crystal input terminal or external clock input pin
■ RC type: RC oscillator input pin
OSCI
■ XTAL type: Output terminal for crystal oscillator or external
clock input pin
OSCO
16
I/O
■ RC type:
Clock output with a time period of one instruction
cycle.
■ External clock signal input
■ General-purpose I/O pin
P70
16
I/O
I/O
■ Default value at power-on reset
■ General-purpose I/O pin
■ Open-drain
P60 ~ P67
7 ~ 14
■ Default value at power-on reset
■ General-purpose I/O pin
1 ~ 4
17 ~ 20
■ Pull-high/pull-down
P50 ~ P57
I/O
■ Wake up from sleep mode when the status of the pin changes
■ Default value at power-on reset
■ “–“→ the input pin of Vin– of a comparator
■ “+”→ the input pin of Vin+ of a comparator
■ Pin CO is the output of the comparator
■ Defined by IOC80 <4:3>
CIN–, CIN+
CO
13, 12
11
I
O
■ IR mode output pin. Capable of driving and sinking
current = 20mA when the output voltage drops to 0.7Vdd and
rise to 0.3Vdd at Vdd = 5V.
IR OUT
14
O
■ External reference voltage for ADC
■ Defined by ADCON (R9)<7>
VREF
/INT
4
7
I
I
■ External interrupt pin triggered by falling or rising edge.
■ Defined by CONT <7>
TCC, TCCA,
TCCB, TCCC
4, 8,
■ External Counter input
9, 10
■ TCC defined by CONT<5>
■ TCCA defined by IOC80 <1>
■ TCCB defined by IOC90 <5>
■ TCCC defined by IOC90 <1>
I
I
2, 3,
■ Analog to Digital Converter
ADC0 ~ ADC3
18, 19
■ Defined by ADCON (R9)<1:0>
■ If it remains at logic low, the device will be reset
■ Wake-up from sleep mode when pin status changes
/RESET
VSS
5
6
I
■ Voltage on /RESET/Vpp must not exceed Vdd during normal
mode
Ground
–
Product Specification (V1.0) 06.16.2005
• 5
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
