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| AT27C256R-45JU Datasheet, PDF (4/13 Pages) ATMEL Corporation – 256K (32K x 8) One-time Programmable, Read-only Memory | |||
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Table 5-3. DC and operating characteristics for read operation
Symbol Parameter
Condition
Min
Max
Units
ILI
Input load current
VIN = 0V to VCC
Ind.
Auto.
±1
µA
±5
µA
ILO
Output leakage current
VOUT = 0V to VCC
Ind.
Auto.
±5
µA
±10
µA
IPP1(2)
VPP(1) read/standby current VPP = VCC
10
µA
ISB
VCC(1) standby current
ISB1 (CMOS), CE = VCC ï± 0.3V
ISB2 (TTL), CE = 2.0 to VCC + 0.5V
100
µA
1
mA
ICC
VCC active current
f = 5MHz, IOUT = 0mA, E = VIL
20
mA
VIL
Input low voltage
-0.6
0.8
V
VIH
Input high voltage
2.0
VCC + 0.5
V
VOL
Output low voltage
IOL = 2.1mA
0.4
V
VOH
Output high voltage
IOH = -400µA
2.4
V
Notes:
1. VCC must be applied simultaneously with or before VPP, and removed simultaneously with or after VPP.
2. VPP may be connected directly to VCC, except during programming. The supply current would then be the sum of ICC and
IPP.
Table 5-4. AC characteristics for read operation
Symbol
Parameter
Condition
tACC(1)
tCE(1)
tOE(1)
tDF(1)
tOH
Address to output delay
CE = OE = VIL
CE to output delay
OE = VIL
OE to output delay
CE = VIL
OE or CE high to output float, whichever occurred first
Output hold from address, CE or OE, whichever occurred
first
Note: 1. See AC waveforms for read operation.
Atmel AT27C256R
-45
-70
Min
Max
Min
Max
45
70
45
70
20
30
20
25
7
7
Units
ns
ns
ns
ns
ns
4
Atmel AT27C256R
0014OâEPROMâ10/11
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