AT29C256-90TC Atmel, AT29C256-90TC Datasheet - Page 7

• 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

9. AC Read Characteristics
10. AC Read Waveforms
Notes:
0046S–FLASH–2/07
Symbol
t
t
t
t
t
Note:
ACC
CE
OE
DF
OH
(1)
(3)(4)
(2)
1. CE may be delayed up to t
2. OE may be delayed up to t
3. t
4. This parameter is characterized and is not 100% tested.
without impact on t
DF
Address to Output Delay
CE to Output Delay
OE to Output Delay
CE or OE to Output Float
Output Hold from OE, CE or Address,
whichever occurred first
Parameter
is specified from OE or CE whichever occurs first (CL = 5 pF).
Not recommended for New Designs.
ACC
.
ACC
CE
(1)(2)(3)(4)
- t
- t
OE
CE
after the falling edge of CE without impact on t
after the address transition without impact on t
AT29C256-70
Min
0
0
0
Max
70
70
40
25
AT29C256-90
Min
0
0
0
Max
90
90
40
25
AT29C256-12
CE
Min
ACC
0
0
0
or by t
.
Max
ACC
120
120
50
30
- t
OE
AT29C256-15
after an address change
Min
0
0
0
AT29C256
Max
150
150
70
40
Units
ns
ns
ns
ns
ns
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