參數(shù)資料
型號(hào): AT27LV520-90XI
廠商: ATMEL CORP
元件分類: DRAM
英文描述: 512K 64K x 8 Multiplexed Addresses/ Outputs Low Voltage OTP EPROM
中文描述: 64K X 8 OTPROM, 90 ns, PDSO20
封裝: 4.40 MM, PLASTIC, MO-153AC, TSSOP-20
文件頁數(shù): 8/10頁
文件大小: 129K
代理商: AT27LV520-90XI
AT27LV520
8
Rapid
Programming Algorithm
A 50
μ
s ALE pulse width is used to program. The address
is set to the first location. V
CC
is raised to 6.5V and OE/V
PP
is raised to 13.0V. Each address is first programmed with
one 50
μ
s ALE pulse without verification. Then a verifica-
tion/reprogramming loop is executed for each address. In
the event a byte fails to pass verification, up to 10 succes-
sive 50
μ
s pulses are applied with a verification after each
pulse. If the byte fails to verify after 10 pulses have been
applied, the part is considered failed. After the byte verifies
properly, the next address is selected until all have been
checked. OE/V
PP
is then lowered to V
IH
and V
CC
to 5.0V.
All bytes are read again and compared with the original
data to determine if the device passes or fails.
V
V = 5.0V
= 5.0V
V
V
= 6.5V
= 13.0V
CC
PP
ALL BYTES
TO ORIGINAL
COMPARE
DATA
PASSED
DEVICE
DEVICE
FAILED
FAIL
PASS
ADDR = FIRST LOCATION
START
X = 0
PROGRAM ONE 50 S PULSE
INCREMENT X
YES
VERIFY
BYTE
X = 10
FAIL
PASS
ADDR = FIRST LOCATION
ADDR.
LAST
ADDRESS
INCREMENT
NO
YES
PROGRAM ONE 100 S PULSE
NO
INCREMENT
ADDRESS
NO
LAST
ADDR.
YES
相關(guān)PDF資料
PDF描述
AT27LV520 512K Multiplexed Addresses/Outputs Low-voltage OTP EPROM(512K多路復(fù)用地址/輸出低電壓一次可編程EPROM)
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