m27w801 STMicroelectronics, m27w801 Datasheet - Page 10

• Manufacturer Part Number: m27w801
• Description: 8 Mbit 1mb X8 Low Voltage Uv Eprom And Otp Eprom
• Manufacturer: STMicroelectronics

Device operation
2.7
2.8
10/24
Program Inhibit
Program Verify
Figure 5.
Programming of multiple M27W801s in parallel with different data is also easily
accomplished. Except for E, all like inputs including GV
common. A TTL low level pulse applied to a M27W801's E input, with V
program that M27W801. A high level E input inhibits the other M27W801s from being
programmed.
A verify (read) should be performed on the programmed bits to determine that they were
correctly programmed. The verify is accomplished with G at V
t
ELQV
after the falling edge of E.
Programming flowchart
YES
NO
FAIL
= 25
++n
V CC = 6.25V, V PP = 12.75V
RESET MARGIN MODE
SET MARGIN MODE
CHECK ALL BYTES
NO
2nd: V CC = 2.7V
1st: V CC = 5V
E = 50 s Pulse
VERIFY
n = 0
Addr
Last
YES
YES
NO
++ Addr
PP
of the parallel M27W801 may be
AI01271C
IL
. Data should be verified with
PP
at 12.75V, will
M27W801