AT28HC256F-90SU Atmel, AT28HC256F-90SU Datasheet - Page 9

• Manufacturer Part Number: AT28HC256F-90SU
• Description: IC EEPROM 256KBIT 90NS 28SOIC
• Manufacturer: Atmel

Specifications of AT28HC256F-90SU

• Format - Memory: EEPROMs - Parallel
• Memory Type: EEPROM
• Memory Size: 256K (32K x 8)
• Speed: 90ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• Density: 256Kb
• Interface Type: Parallel
• Organization: 32Kx8
• Access Time (max): 90ns
• Write Protection: Yes
• Data Retention: 10Year
• Operating Supply Voltage (typ): 5V
• Package Type: SOIC
• Operating Temp Range: -40C to 85C
• Supply Current: 80mA
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 28
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

16. Page Mode Write Characteristics
17. Page Mode Write Waveforms
Notes:
18. Chip Erase Waveforms
0007N–PEEPR–9/09
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
(1)(2)
t
t
V
S
W
H
AT28HC256
AT28HC256F
= t
= 10 msec (min.)
= 12.0V ± 0.5V
H
= 5 µsec (min.)
Min
100
50
50
50
0
0
Typ
5
2
AT28HC256
Max
150
10
3
Units
ms
ms
ns
ns
ns
ns
ns
µs
ns
9