M27C256B-80B6TR View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

M27C256B-80B6TR

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

STMicroelectronics 

DC and AC parameters

M27C256B

Figure 8. Programming and Verify modes AC waveforms

A0-A14

tAVEL

VALID

Q0-Q7

DATA IN

DATA OUT

tQVEL

tEHQX

VPP

VCC

tVPHEL

tGLQV

tGHQZ

tVCHEL

) E

t(s tELEH

uc G

tQXGL

tGHAX

Prod PROGRAM

VERIFY

AI00759

lete Table 11. Programming mode AC characteristics(1) (2)

so Symbol Alt

Parameter

Test

Condition

Min

Max Unit

Ob tAVEL tAS Address Valid to Chip Enable Low

) - tQVEL tDS Input Valid to Chip Enable Low

t(s tVPHEL tVPS VPP High to Chip Enable Low

c tVCHEL tVCS VCC High to Chip Enable Low

du tELEH tPW Chip Enable Program Pulse Width

ro tEHQX tDH Chip Enable High to Input Transition

P tQXGL tOES Input Transition to Output Enable Low

letetGLQV tOE Output Enable Low to Output Valid

o tGHQZ tDFP Output Enable High to Output Hi-Z

bs tGHAX tAH Output Enable High to Address Transition

O 1. TA = 25 °C; VCC = 6.25V ± 0.25V; VPP = 12.75V ± 0.25V.

2

µs

2

µs

2

µs

2

µs

95 105 µs

2

µs

2

µs

100 ns

0

130 ns

0

ns

2. VCC must be applied simultaneously with or before VPP and removed simultaneously or after VPP.

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