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AT28LV64B-25PI

P1-P3P4-P6P7-P9P10-P12
AT28LV64B
7
Write Algorithm
(1)
Notes for software program code:
1. Data Format: I/O7 - I/O0 (Hex); Address Format: A12 - A0 (Hex).
2. Data protect state will be re-activated at the end of the write cycle.
3. 1 to 64 bytes of data are loaded.
Page Mode Characteristics
Symbol Parameter Min Max Units
t
WC
Write Cycle Time 10 ms
t
AS
Address Set-up Time 0 ns
t
AH
Address Hold Time 100 ns
t
DS
Data Set-up Time 100 ns
t
DH
Data Hold Time 0 ns
t
WP
Write Pulse Width 200 ns
t
BLC
Byte Load Cycle Time 100 µs
t
WPH
Write Pulse Width High 100 ns
LOAD DATA AA
TO
ADDRESS 1555
LOAD DATA 55
TO
ADDRESS 0AAA
LOAD DATA A0
TO
ADDRESS 1555
LOAD DATA XX
TO
ANY ADDRESS
(3)
LOAD LAST BYTE
TO
LAST ADDRESS
ENTER DATA
PROTECT STATE
WRITES ENABLED
(2)
AT28LV64B
8
Software Data Protection Write Cycle Waveforms
(1)(2)(3)
Notes: 1. A0 - A12 must conform to the addressing sequence for the first three bytes as shown above.
2. A6 through A12 must specify the same page address during each high to low transition of WE
(or CE) after the software
code has been entered.
3. OE
must be high only when WE and CE are both low.
Notes: 1. These parameters are characterized and not 100% tested.
2. See AC Read Characteristics.
Data Polling Waveforms
Data Polling Characteristics
(1)
Symbol Parameter Min Typ Max Units
t
DH
Data Hold Time 0 ns
t
OEH
OE Hold Time 0 ns
t
OE
OE to Output Delay
(2)
ns
t
WR
Write Recovery Time 0 ns
AT28LV64B
9
Notes: 1. These parameters are characterized and not 100% tested.
2. See AC Read Characteristics.
Toggle Bit Waveforms
Notes: 1. Toggling either OE or CE or both OE and CE will operate toggle bit.
2. Beginning and ending state of I/O6 will vary.
3. Any address location may be used, but the address should not vary.
Toggle Bit Characteristics
(1)
Symbol Parameter Min Typ Max Units
t
DH
Data Hold Time 10 ns
t
OEH
OE Hold Time 10 ns
t
OE
OE to Output Delay
(2)
ns
t
OEHP
OE High Pulse 150 ns
t
WR
Write Recovery Time 0 ns
P1-P3P4-P6P7-P9P10-P12

AT28LV64B-25PI

Mfr. #:
Buy AT28LV64B-25PI
Manufacturer:
Description:
IC EEPROM 64K PARALLEL 28DIP
Lifecycle:
New from this manufacturer.
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