AT28HC64B-90SU Atmel, AT28HC64B-90SU Datasheet - Page 11

• Manufacturer Part Number: AT28HC64B-90SU
• Description: IC EEPROM 64KBIT 90NS 28SOIC
• Manufacturer: Atmel

Specifications of AT28HC64B-90SU

• Format - Memory: EEPROMs - Parallel
• Memory Type: EEPROM
• Memory Size: 64K (8K x 8)
• Speed: 90ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

22. Data Polling Characteristics
Note:
23. Data Polling Waveforms
24. Toggle Bit Characteristics
Notes:
25. Toggle Bit Waveforms
Notes:
0274L–PEEPR–2/3/09
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.
1. These parameters are characterized and not 100% tested.
2.
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.
See “AC Read Characteristics” on page 6.
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
(2)
t
DH
(1)
(2)
t
OEH
t
DH
(1)(2)(3)
t
OEH
t
(1)
OE
t
OE
(1)
See “AC Read Characteristics” on page 6.
Min
Min
150
10
10
0
0
0
0
Typ
t
Typ
WR
t
WR
Max
Max
Units
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
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