M27V800-100F1TR datasheet(8/16 Pages) STMICROELECTRONICS

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M27V800

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Table 9. Programming Mode DC Characteristics (1)

(TA =25 °C; VCC = 6.25V ± 0.25V; VPP = 12.5V ± 0.25V)

Note: 1. VCC must be applied simultaneously with or before VPP and removed simultaneously or after VPP.

Table 10. Programming Mode AC Characteristics (1)

TA =25 °C; VCC = 6.25V ± 0.25V; VPP = 12.5V ± 0.25V)

Note: 1. VCC must be applied simultaneously with or before VPP and removed simultaneously or after VPP.

2. Sampled only, not 100% tested.

Symbol

Parameter

Test Conditio n

Min

Max

Unit

ILI

Input Leakage Current

≤ VIN ≤ VCC

±1

µA

ICC

Supply Current

IPP

Program Current

E= VIL

VIL

Input Low Voltage

–0.3

0.8

VIH

Input High Voltage

2.4

VCC + 0.5

VOL

Output Low Voltage

IOL = 2.1mA

0.4

VOH

Output High Voltage TTL

IOH = –2.5mA

3.5

VID

A9 Voltage

11.5

12.5

Symbol

Alt

Parameter

Test Condi tion

Min

Max

Unit

tAVEL

tAS

Address Valid to Chip Enable Low

µs

tQVEL

tDS

Input Valid to Chip Enable Low

µs

tVPHAV

tVPS

VPP High to Address Valid

µs

tVCHAV

tVCS

VCC High to Address Valid

µs

tELEH

tPW

Chip Enable Program Pulse Width

µs

tEHQX

tDH

Chip Enable High to Input Transition

µs

tQXGL

tOES

Input Transition to Output Enable Low

µs

tGLQV

tOE

Output Enable Low to Output Valid

120

tGHQZ

(2)

tDFP

Output Enable High to Output Hi-Z

130

tGHAX

tAH

Output Enable High to Address

Transition

0ns

Programming

The M27V800 has been designed to be fully com-

patible with the M27C800 and has the same elec-

tronic signature. As a result the M27V800 can be

programmed as the M27C800 on the same pro-

gramming equipments applying 12.75V on VPP

and 6.25V on VCC by the use of the same PRES-

TO III algorithm. When delivered (and after each

erasure for UV EPROM), all bits of the M27V800

are in the ’1’ state. Data is introduced by selective-

ly programming ’0’s into the desired bit locations.

Although only ’0’s will be programmed, both ’1’s

and ’0’s can be present in the data word. The only

way to change a ’0’ to a ’1’ is by die exposition to

ultraviolet light (UV EPROM). The M27V800 is in

the programming mode when VPP input is at

12.5V, G is at VIH and E is pulsed to VIL. The data

to be programmed is applied to 16 bits in parallel

to the data output pins. The levels required for the

address and data inputs are TTL. VCC is specified

to be 6.25V

± 0.25V.

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