EM78P341 datasheet(11/102 Pages) EMC

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EM78P341N/342N/343N

8-Bit Microprocessor with OTP ROM

Product Specification (V1.0) 12.01.2006

• 5

(This specification is subject to change without further notice)

5.2 EM78P342NP/M

Symbol

Pin No.

Type

Function

P50~P55

1~3, 16~18

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

P60~67

6~13

I/O

8-bit General purpose input/output pins

Open drain

Default value at power-on reset

P70~P71

15, 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, 13

15~18

7-bit Analog-to-Digital Converter

Defined by ADCON (R9)<1:0>

VREF

External reference voltage for ADC

Defined by ADCON (R9) <7>.

CIN-

CIN+

“-“ : 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>

/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

TCCB, TCCC

3, 7

8~9

External Counter input

TCC defined by CONT<5>

TCCA defined by IOC80 <1>

TCCB defined by IOC90 <5>

TCCC defined by IOC90 <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.

Capable of driving and sinking current = 20mA when the output

voltage drops to 0.7Vdd at rise to 0.3Vdd at

Vdd = 5V

VDD

–

Power supply

VSS

–

Ground

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