EM78F651NAPSSLASHNAPJ datasheet(8/58 Pages) EMC

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EM78F651N

8-Bit Microcontroller

•

Product Specification (V1.1) 10.20.2006

(This specification is subject to change without further notice)

Table 3 EM78F651NCP, EM78F651NCM

Symbol

Pin No.

Type

Function

P50~P53

P54~P55

17, 18, 1

2, 15, 16

I/O

P50~P53 are bidirectional 4-bit input/output pins and can be pulled-

down by software.

P60~P67

6~13

I/O

Bidirectional 8-bit input/output pins. These can be pulled-high or can

be open drain by software programming. P60~63 can also be pulled

down by software.

P77

I/O

P77 is an open drain I/O pin.

OSCI

Crystal type: Crystal input terminal or external clock input pin

ERC type: RC oscillator input pin

OSCO

I/O

Crystal type: Output terminal for crystal oscillator or external clock

input pin.

RC type: Instruction clock output.

External clock signal input.

TCC

Real time clock/counter (with Schmitt Trigger input pin) must be tied to

VDD or VSS if not in use.

/INT

External interrupt pin triggered by a falling edge.

/RESET

Input pin with Schmitt Trigger. If this pin remains at logic low, the

controller will also remain in reset condition.

VDD

Power supply

VSS

Ground

Table 4 EM78F651NDKM, EM78F651NDP

Symbol

Pin No.

Type

Function

P50~P57

18, 19, 2,

3, 16, 17,

1, 20

I/O

P50~P57 are bidirectional 8-it input/output pins.

P50 and P51 can also be defined as the R-option pins.

P50~P53 can be pulled-down by software.

P60~P67

7~14

I/O

Bidirectional 8-bit input/output pins. These can be pulled-high or can

be open drain by software programming. P60~63 can also be pulled

down by software.

P77

I/O

P77 is an open drain I/O pin.

OSCI

Crystal type: Crystal input terminal or external clock input pin

ERC type: RC oscillator input pin

OSCO

I/O

Crystal type: Output terminal for crystal oscillator or external clock

input pin.

RC type: Instruction clock output.

External clock signal input.

TCC

The real time clock/counter (with Schmitt Trigger input pin) must be

tied to VDD or VSS if not in use.

/INT

External interrupt pin triggered by a falling edge.

/RESET

Input pin with Schmitt Trigger. If this pin remains at logic low, the

controller will also remain in reset condition.

VDD

Power supply

VSS

Ground

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