AT28C256-25TI Atmel, AT28C256-25TI Datasheet - Page 8

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

Specifications of AT28C256-25TI

• 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: TSOP-28
• Access Time: 250 ns
• Interface Type: Parallel
• Minimum Operating Temperature: - 40 C
• Output Enable Access Time: 100 ns
• Factory Pack Quantity: 234
• Supply Voltage - Max: 5.5 V
• Supply Voltage - Min: 4.5 V

14. AC Write Characteristics
Note:
15. AC Write Waveforms
15.1
15.2
8
Symbol
t
t
t
t
t
t
t
t
AS
AH
CS
CH
WP
DS
DH
DV
, t
, t
OES
OEH
1. NR = No Restriction
WE Controlled
CE Controlled
AT28C256
Parameter
Address, OE Setup Time
Address Hold Time
Chip Select Setup Time
Chip Select Hold Time
Write Pulse Width (WE or CE)
Data Setup Time
Data, OE Hold Time
Time to Data Valid
NR
Min
100
50
50
0
0
0
0
(1)
Max
0006M–PEEPR–12/09
Units
ns
ns
ns
ns
ns
ns
ns