M27W801-100N6TR(2006) 查看數據表（PDF） - STMicroelectronics
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M27W801-100N6TR Datasheet PDF : 16 Pages
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Device operation
Figure 5. Programming flowchart
VCC = 6.25V, VPP = 12.75V
SET MARGIN MODE
n=0
NO
++n
= 25
YES
E = 50µs Pulse
NO
VERIFY
YES
++ Addr
FAIL
Last NO
Addr
YES
RESET MARGIN MODE
CHECK ALL BYTES
1st: VCC = 5V
2nd: VCC = 2.7V
AI01271C
M27W801
2.7
Program Inhibit
Programming of multiple M27W801s in parallel with different data is also easily
accomplished. Except for E, all like inputs including GVPP of the parallel M27W801 may be
common. A TTL low level pulse applied to a M27W801's E input, with VPP at 12.75V, will
program that M27W801. A high level E input inhibits the other M27W801s from being
programmed.
2.8
Program Verify
A verify (read) should be performed on the programmed bits to determine that they were
correctly programmed. The verify is accomplished with G at VIL. Data should be verified with
tELQV after the falling edge of E.
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