ZLP12840OPTMCU datasheet(21/58 Pages) ZILOG

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PS024406-0106

P R E L I M I N A R Y

Pin Description

ZLP12840 OTP MCU

Product Specification

Table 6 identifies the functions and signal directions of each pin within the 28-pin PDIP,

SOIC, and SSOP packages by function.

Table 6. ZLP12840 MCU 28-Pin PDIP/SOIC/SSOP Functional Pin Identification

Symbol

Function

Direction

P00

Port 0, bit 0

Input/Output

P01

Port 0, bit 1

Input/Output

P02

Port 0, bit 2

Input/Output

P03

Port 0, bit 3

Input/Output

P04

Port 0, bit 4

Input/Output

P05

Port 0, bit 5

Input/Output

P06

Port 0, bit 6

Input/Output

P07

Port 0, bit 7

Input/Output

P20

Port 2, bit 0

Input/Output

P21

Port 2, bit 1

Input/Output

P22

Port 2, bit 2

Input/Output

P23

Port 2, bit 3

Input/Output

P24

Port 2, bit 4

Input/Output

P25

Port 2, bit 5

Input/Output

P26

Port 2, bit 6

Input/Output

P27

Port 2, bit 7

Input/Output

P30

Port 3, bit 0; connect to VCC if

not used

Input

P31

Port 3, bit 1

Input

P32

Port 3, bit 2

Input

P33

Port 3, bit 3

Input

P34

Port 3, bit 4

Output

P35

Port 3, bit 5

Output

P36

Port 3, bit 6

Output

P37

Port 3, bit 7

Output

8VDD

Power supply

22VSS

Ground

XTAL1

Crystal oscillator

Input

XTAL2

Crystal oscillator

Output

ZLP12840OPTMCU Datasheet(PDF) 21 Page - Zilog, Inc.

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