AT28C64B-25TI Atmel, AT28C64B-25TI Datasheet - Page 5

• Manufacturer Part Number: AT28C64B-25TI
• Manufacturer: Atmel

Specifications of AT28C64B-25TI

• Density: 64Kb
• Interface Type: Parallel
• Organization: 8Kx8
• Access Time (max): 250ns
• Write Protection: Yes
• Data Retention: 10Year
• Operating Supply Voltage (typ): 5V
• Package Type: TSOP-I
• Operating Temp Range: -40C to 85C
• Supply Current: 40mA
• 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: Not Compliant

AC Read Characteristics
AC Read Waveforms
Notes:
Input Test Waveforms and
Measurement Level
Pin Capacitance
f = 1 MHz, T = 25°C
Note:
Symbol
t
t
t
t
t
Symbol
C
C
ACC
CE
OE
DF
OH
IN
OUT
t
(3)(4)
(1)
(2)
R
, t
F
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.
1. This parameter is characterized and is not 100% tested.
< 5 ns
without impact on t
DF
Parameter
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
is specified from OE or CE whichever occurs first (C
(1)
Typ
4
8
ACC
(1)(2)(3)(4)
.
ACC
CE
- t
- t
OE
CE
after the falling edge of CE without impact on t
after the address transition without impact on t
Min
AT28C64B-15
Max
0
0
0
12
6
L
Max
150
150
70
50
= 5 pF).
Output Test Load
Min
AT28C64B-20
0
0
0
Units
pF
pF
Max
200
200
CE
80
55
ACC
or by t
AT28C64B
.
ACC
Min
AT28C64B-25
- t
0
0
0
OE
after an address change
Conditions
V
V
OUT
Max
250
250
100
IN
60
= 0V
= 0V
Units
ns
ns
ns
ns
ns
5