EM78P809N

8-Bit Microcontroller

Symbol

 

Pin No.

 

Type

 

Function

 

 

 

 

 

 

 

 

 

 

 

 

 

* P80~P83 are bi-directional I/O pins

 

 

 

 

 

 

* P80 can be used as 8-bit Timer/Counter 3 (TC3) or external Interrupt

P80~P81

 

12~13

 

I/O

 

Input 3 (INT3)

 

 

 

* P81 can be used as 8-bit Timer/Counter 4 (TC4) or programmable

 

 

 

 

 

 

 

 

 

 

 

 

divider output (PDO)

 

 

 

 

 

 

* P80 ~ P81 can be used as pull high or pull low pins

 

 

 

 

 

 

 

 

 

 

 

 

 

* P90~P97 are bi-directional I/O pins

P90~P97

 

4~11

 

I/O

 

* P90~P97 can be used as 8 channel 10-bit resolution A/D converter

 

 

 

 

 

 

* P97 can be used as AD reference power supply input (VREF)

 

 

 

 

 

 

 

VSS

 

14

 

-

 

* Ground

 

 

 

 

 

 

 

NC

 

3

 

-

 

* No connection

 

 

 

 

 

 

 

 

 

 

 

 

 

OTP Programming Pins

VPP

 

27

 

I

 

Programming voltage input

 

 

 

 

 

 

 

ACLK

 

1

 

I

 

CLK for OTP memory address increment

 

 

 

 

 

 

 

DATAIN

 

25

 

I/O

 

ROM code series input and series output pin

 

 

 

 

 

 

 

DINCK

 

26

 

I

 

ROM code input clock

 

 

 

 

 

 

 

PGMB

 

24

 

I

 

Program write enable pin. Active low.

 

 

 

 

 

 

 

OEB

 

23

 

I

 

Output enable pin. Active low.

 

 

 

 

 

 

 

4

Product Specification (V1.0) 07.26.2005

(This specification is subject to change without further notice)

Page 8
Image 8
IBM EM78P809N manual OTP Programming Pins