AT28HC256-12JI Atmel, AT28HC256-12JI Datasheet - Page 11

• Manufacturer Part Number: AT28HC256-12JI
• Description: IC EEPROM 256KBIT 120NS 32PLCC
• Manufacturer: Atmel

Specifications of AT28HC256-12JI

• Format - Memory: EEPROMs - Parallel
• Memory Type: EEPROM
• Memory Size: 256K (32K x 8)
• Speed: 120ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

22. Data Polling Characteristics
Notes:
23. Data Polling Waveforms
24. Toggle Bit Characteristics
Notes:
25. Toggle Bit Waveforms
Notes:
0007N–PEEPR–9/09
Symbol
t
t
t
t
Symbol
t
t
t
t
t
DH
OEH
OE
WR
DH
OEH
OE
OEHP
WR
1. These parameters are characterized and not 100% tested.
2. See
1. These parameters are characterized and not 100% tested.
2. See
1. Toggling either OE or CE or both OE and CE will operate toggle bit.
2. Beginning and ending state of I/O6 will vary.
3. Any address location may be used but the address should not vary.
Parameter
Data Hold Time
OE Hold Time
OE to Output Delay
Write Recovery Time
Parameter
Data Hold Time
OE Hold Time
OE to Output Delay
OE High Pulse
Write Recovery Time
“AC Read Characteristics” on page
“AC Read Characteristics” on page
(2)
(2)
(1)
(1)
6.
6.
Min
Min
150
10
10
0
0
0
0
Typ
Typ
AT28HC256
Max
Max
Units
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
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