ST6246 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST6246

8-BIT OTP/EPROM MCU WITH LCD DRIVER, EEPROM AND A/D CONVERTER

STMicroelectronics 

ST6246B

1 GENERAL DESCRIPTION

1.1 INTRODUCTION

The ST6246B is mask programmed ROM version

of ST62T46B OTP devices.

It offers the same functionality as OTP devices,

selecting as ROM options the options defined in

the programmable option byte of the OTP version.

1.2 ROM READOUT PROTECTION

If the ROM READOUT PROTECTION option is

selected, a protection fuse can be blown to pre-

vent any access to the program memory content.

In case the user wants to blow this fuse, high volt-

age must be applied on the TEST pin.

Figure 1. Programming wave form

Figure 2. Programming Circuit

TEST

15

14V typ

10

5

TEST

100mA

max

4mA typ

0.5s min

150 µs typ

t

VR02001

5V 47mF

100nF

VSS

VDD

TEST

PROTECT

14V

100nF

ZPD15

15V

VR02003

Note: ZPD15 is used for overvoltage protection

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