M27V320 datasheet(8/15 Pages) STMICROELECTRONICS

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M27V320

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Table 9. Programming Mode DC Characteristics (1)

(TA = 25 °C; VCC = 6.25V ± 0.25V; VPP = 12V ± 0.25V)

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

Table 10. MARGIN MODE AC Characteristics (1)

(TA = 25 °C; VCC = 6.25V ± 0.25V; VPP = 12V ± 0.25V)

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

Symbol

Parameter

Test Condition

Min

Max

Unit

ILI

Input Leakage Current

VIL ≤ VIN ≤ VIH

±10

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 Condition

Min

Max

Unit

tA9HVPH

tAS9

VA9 High to VPP High

2µs

tVPHEL

tVPS

VPP High to Chip Enable Low

2µs

tA10HEH

tAS10

VA10 High to Chip Enable High (Set)

1µs

tA10LEH

tAS10

VA10 Low to Chip Enable High (Reset)

1µs

tEXA10X

tAH10

Chip Enable Transition to VA10 Transition

1µs

tEXVPX

tVPH

Chip Enable Transition to VPP Transition

2µs

tVPXA9X

tAH9

VPP Transition to VA9 Transition

2µs

Programming

When delivered, all bits of the M27V320 are in the

'1' state. Data is introduced by selectively pro-

gramming '0's into the desired bit locations. Al-

though only '0's will be programmed, both '1's and

'0's can be present in the data word. The M27V320

is in the programming mode when VPP input is at

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

data to be programmed is applied to 16 bits in par-

allel to the data output pins. The levels required for

the address and data inputs are TTL. VCC is spec-

ified to be 6.25V ± 0.25V.

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