AT29C256-90TC Atmel, AT29C256-90TC Datasheet - Page 10

• Manufacturer Part Number: AT29C256-90TC
• Manufacturer: Atmel

Specifications of AT29C256-90TC

• Density: 256Kb
• Access Time (max): 90ns
• Interface Type: Parallel
• Boot Type: Not Required
• Address Bus: 15b
• Operating Supply Voltage (typ): 5V
• Operating Temp Range: 0C to 70C
• Package Type: TSOP-I
• Program/erase Volt (typ): 4.5 to 5.5V
• Sync/async: Asynchronous
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Word Size: 8b
• Number Of Words: 32K
• Supply Current: 50mA
• Mounting: Surface Mount
• Pin Count: 28
• Lead Free Status / Rohs Status: Not Compliant

16. Program Cycle Characteristics
17. Program Cycle Waveforms
Notes:
10
Symbol
t
t
t
t
t
t
t
t
WC
AS
AH
DS
DH
WP
BLC
WPH
1. A6 through A14 must specify the page address during each high-to-low transition of WE (or CE).
2. OE must be high when WE and CE are both low.
3. All bytes that are not loaded within the page being programmed will be indeterminate.
AT29C256
Parameter
Write Cycle Time
Address Set-up Time
Address Hold Time
Data Set-up Time
Data Hold Time
Write Pulse Width
Byte Load Cycle Time
Write Pulse Width High
(1)(2)(3)
Min
100
50
35
90
0
0
Max
150
10
0046S–FLASH–2/07
Units
ms
ns
ns
ns
ns
ns
µs
ns