EM78P341 datasheet(10/102 Pages) EMC

10 / 102 page

EM78P341N/342N/343N

8-Bit Microprocessor with OTP ROM

•

Product Specification (V1.0) 12.01.2006

(This specification is subject to change without further notice)

Pin Description

5.1 EM78P341NP/M

Symbol

Pin No.

Type

Function

P50~P55

1~3, 12~14

I/O

6-bit General purpose input/output pins

Pull-high/pull-down

Wake up from sleep mode when the pin status changes

Default value at power-on reset

P60, P61

66, 67

6~9

I/O

4-bit General purpose input/output pins

Open drain

Default value at power-on reset

P70~P71

11, 4

I/O

2-bit General purpose input/output pins

Default value at power-on reset

/INT

External interrupt pin triggered by a falling or a rising edge.

Defined by CONT <7>

ADC0~ADC6

1, 2, 9

11~14

7-bit Analog-to-Digital Converter

Defined by ADCON (R9)<1:0>

VREF

External reference voltage for ADC

Defined by ADCON (R9) <7>.

/RESET

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

TCC, TCCA

3, 7

External Counter input

TCC defined by CONT<5>

TCCA defined by IOC80 <1>

OSCI

Crystal type: Crystal input terminal or external clock input pin

RC type: RC oscillator input pin

OSCO

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.

External clock signal input.

IR OUT

IR mode output pin.

Driving current = 10mA when the output voltage drops to

Vdd-0.5V at Vdd = 5V

Sinking current = 15mA when the output voltage drops to

GND+0.5V at Vdd = 5V

VDD

–

Power supply

VSS

–

Ground

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