KS57C2916/P2916 MICROCONTROLLER

KS57P2916 OTP

15-3

Table 15-1. Descriptions of Pins Used to Read/Write the EPROM

Main Chip

During Programming

Pin Name

Pin Name

Pin No.

I/O

Function

P0.1

SDAT

10

I/O

Serial data pin. Output port when reading and

input port when writing. Can be assigned as a

Input/push-pull output port.

P0.0

SCLK

11

I/O

Serial clock pin. Input only pin.

TEST

16

I

Power supply pin for EPROM cell writing

(indicates that OTP enters into the writing

mode). When 12.5 V is applied, OTP is in

writing mode and when 5 V is applied, OTP is in

reading mode. (Option)

RESET

RESET

19

I

Chip initialization

12/13

I

Logic power supply pin. VDD should be tied to

+5 V during programming.

Table 15-2. Comparison of KS57P2916 and KS57C2916 Features

Characteristic

KS57P2916

KS57C2916

Program Memory

16 Kbyte EPROM

16 Kbyte mask ROM

2.2 V to 3.4 V

2.2 V to 3.4 V

OTP Programming Mode

Pin Configuration

80 QFP

80 QFP

EPROM Programmability

User Program 1 time

Programmed at the factory

OPERATING MODE CHARACTERISTICS

When 12.5 V is supplied to the V

The operating mode (read, write, or read protection) is selected according to the input signals to the pins listed in

Table 15–3 below.

Table 15-3. Operating Mode Selection Criteria

V

DD

V

REG/MEM

Address

(A15–A0)

R/W

Mode

5 V

5 V

0

0000H

1

EPROM read

12.5 V

0

0000H

0

EPROM program

12.5 V

0

0000H

1

EPROM verify

12.5 V

1

0E3FH

0

EPROM read protection

NOTE: "0" means Low level; "1" means High level.