M27W400 datasheet(9/15 Pages) STMICROELECTRONICS

Part #	M27W400

Description	4 Mbit 512Kb x8 or 256Kb x16 Low Voltage UV EPROM and OTP EPROM

PDF	15 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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9 / 15 page

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M27W400

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

Alt

Parameter

Test Condition

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

2µs

tVCHAV

tVCS

VCC High to Address Valid

2µs

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

Figure 8. Programming and Verify Modes AC Waveforms

tAVEL

VALID

AI01639

A0-A17

Q0-Q15

BYTEVPP

VCC

DATA IN

DATA OUT

tQVEL

tVPHAV

tVCHAV

tEHQX

tELEH

tGLQV

tQXGL

tGHQZ

tGHAX

PROGRAM

VERIFY

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