AT28C256-25SI Atmel, AT28C256-25SI Datasheet - Page 9

• Manufacturer Part Number: AT28C256-25SI
• Description: EEPROM 256K 11MIL GRIND - 250NS IND TEMP
• Manufacturer: Atmel

Specifications of AT28C256-25SI

• Product Category: EEPROM
• Memory Size: 256 Kbit
• Organization: 32 K x 8
• Data Retention: 10 yr
• Maximum Operating Current: 50 mA
• Operating Supply Voltage: 5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SOIC
• Access Time: 250 ns
• Interface Type: Parallel
• Minimum Operating Temperature: - 40 C
• Output Enable Access Time: 100 ns
• Factory Pack Quantity: 27
• Supply Voltage - Max: 5.5 V
• Supply Voltage - Min: 4.5 V

16. Page Mode Characteristics
17. Page Mode Write Waveforms
Notes:
18. Chip Erase Waveforms
0006M–PEEPR–12/09
Symbol
t
t
t
t
t
t
t
t
WC
AS
AH
DS
DH
WP
BLC
WPH
1. A6 through A14 must specify the same page address during each high to low transition of WE (or CE).
2. OE must be high only when WE and CE are both low.
Parameter
Write Cycle Time (option available)
Address Setup Time
Address Hold Time
Data Setup Time
Data Hold Time
Write Pulse Width
Byte Load Cycle Time
Write Pulse Width High
t
t
V
S
W
H
= t
= 10 msec (min.)
= 12.0V ± 0.5V
H
= 5 µsec (min.)
(1)(2)
AT28C256
AT28C256F
Min
100
50
50
50
0
0
Max
150
10
3
AT28C256
Units
ms
ms
ns
ns
ns
ns
ns
µs
ns
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