at27bv4096 ATMEL Corporation, at27bv4096 Datasheet - Page 10

• Manufacturer Part Number: at27bv4096
• Description: 4-megabit 256k X 16 Unregulated Battery-voltage High-speed Otp Eprom
• Manufacturer: ATMEL Corporation

18. Rapid Programming Algorithm
10
AT27BV4096
A 50 µs CE pulse width is used to program. The address is set to the first location. V
to 6.5V and V
without verification. Then a verification/reprogramming loop is executed for each address. In the
event a word fails to pass verification, up to 10 successive 50
cation after each pulse. If the word fails to verify after 10 pulses have been applied, the part is
considered failed. After the word verifies properly, the next address is selected until all have
been checked. V
pared with the original data to determine if the device passes or fails.
PP
is raised to 13.0V. Each address is first programmed with one 50 µs CE pulse
PP
INCREMENT ADDRESS
INCREMENT ADDRESS
is then lowered to 5.0V and V
YES
NO
ADDR.?
LAST
PROGRAM ONE 50 µS PULSE
PROGRAM ONE 50 µS PULSE
PASS
ADDR = FIRST LOCATION
ADDR = FIRST LOCATION
NO
TO ORIGINAL
PASS
ALL WORDS
VPP = 13.0V
VCC = 6.5V
VCC = 5.0V
COMPARE
VPP = 5.0V
PASSED
VERIFY
DEVICE
ADDR.?
START
WORD
DATA
X = 0
LAST
YES
CC
to 5.0V. All words are read again and com-
FAIL
FAIL
µ
s pulses are applied with a verifi-
INCREMENT X
NO
DEVICE
FAILED
X = 10?
YES
0640E–EPROM–8/07
CC
is raised