M27C256B_98 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

M27C256B_98

256 Kbit (32Kb x 8) UV EPROM and OTP EPROM

STMicroelectronics 

M27C256B

Table 9. Programming Mode DC Characteristics (1)

(TA = 25 °C; VCC = 6.25V ± 0.25V; VPP = 12.75V ± 0.25V)

Symbol

Parameter

Test Condition

Min

Max

Unit

ILI

Input Leakage Current

VIL ≤ VIN ≤ VIH

±10

µA

ICC

Supply Current

50

mA

IPP

Program Current

VIL

Input Low Voltage

VIH

Input High Voltage

E = VIL

50

mA

–0.3

0.8

V

2

VCC + 0.5

V

VOL

Output Low Voltage

IOL = 2.1mA

0.4

V

VOH

Output High Voltage TTL

IOH = –1mA

3.6

V

VID

A9 Voltage

11.5

12.5

V

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 = 12.75V ± 0.25V)

Symbol Alt

Parameter

Test Condition

Min

tAVEL

tAS Address Valid to Chip Enable Low

2

tQVEL

tDS Input Valid to Chip Enable Low

2

tVPHEL

tVPS VPP High to Chip Enable Low

2

tVCHEL

tVCS VCC High to Chip Enable Low

2

tELEH

tPW Chip Enable Program Pulse Width

95

tEHQX

tDH Chip Enable High to Input Transition

2

tQXGL

tOES Input Transition to Output Enable Low

2

tGLQV

tOE Output Enable Low to Output Valid

tGHQZ

tDFP Output Enable High to Output Hi-Z

0

tGHAX

tAH Output Enable High to Address Transition

0

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

Max

105

100

130

Unit

µs

µs

µs

µs

µs

µs

µs

ns

ns

ns

7/15

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