ST1200 datasheet(1/2 Pages) STMICROELECTRONICS

Nome de Peças	ST1200

Descrição Electrónicos	Memory Card IC 256 bit OTP EPROM with Lock-Out

PDF	2 Pages

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Fabricante Electrônico	STMICROELECTRONICS [STMicroelectronics]

Página de início	http://www.st.com

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DATA BRIEFING

October 1999

Complete data available under NDA.

ST1200

Memory Card IC

256 bit OTP EPROM with Lock-Out

s

256 x 1 bit Organisation

s

96 bits Protected in Write Mode By Lock-Out

Fuse

s

5 V Power Supply (VCC) and 21 V Programming

Voltage (VPP)

s

85 mW in Read Mode

s

Power On Reset

s

Very High Reliability Level

s

Standard Delivery: Wafer Form and

Micromodule Package

DESCRIPTION

The ST1200 is a 256 bit OTP (one time program-

mable) EPROM, organized as 256 x 1, manufac-

tured using ST’s highly reliable and well proven

NMOS technology.

The security mechanism, called Lock-Out, allows

the user to inhibit, in write mode, the access to a

memory section of 96 bits. Thus, by blowing a

polysilicon fuse, the address bits 0 to 95 can be

protected against write.

The 9th bit of the ST1200 is set to a logical “1” for

device identification purposes. In order to avoid

any modification, ST has mask-programmed this

bit to the logic “1” state.

Micromodule (D10)

Wafer

Figure 1. Logic Diagram

DS120005

ST

VCC

B

GND

OUT

FUS

VPP

A

ST1200

Table 1. Signal Names

A

Function code

B

Function code

FUS

Fuse control

OUT

Data Output

ST

Strobe input

- validates function codes

- in programming mode used as a

programming pulse

VPP

Programming voltage (must be preset

before programming and held after)

VCC

Power

GND

Ground

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