m27c801 STMicroelectronics, m27c801 Datasheet - Page 10

• Manufacturer Part Number: m27c801
• Description: 8 Mbit 1mb X 8 Uv Eprom And Otp Eprom
• Manufacturer: STMicroelectronics

Device description
2.7
2.8
2.9
10/24
Figure 4.
Program Inhibit
Programming of multiple M27C801s 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 M27C801's E input, with V
program that M27C801. A high level E input inhibits the other M27C801s from being
programmed.
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 V
with t
Electronic Signature
The Electronic Signature (ES) mode allows the reading out of a binary code from an
EPROM that will identify its manufacturer and type. This mode is intended for use by
programming equipment to automatically match the device to be programmed with its
corresponding programming algorithm. The ES mode is functional in the 25°C ± 5°C
ambient temperature range that is required when programming the M27C801. To activate
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 = 4.2V
1st: V CC = 6V
E = 50 s Pulse
VERIFY
n = 0
Addr
Last
YES
YES
NO
PP
++ Addr
of the parallel M27C801 may be
AI01271B
IL
. Data should be verified
PP
at 12.75V, will
M27C801