AT28BV256-20SU Atmel, AT28BV256-20SU Datasheet - Page 11

• Manufacturer Part Number: AT28BV256-20SU
• Description: IC EEPROM 256KBIT 200NS 28SOIC
• Manufacturer: Atmel

Specifications of AT28BV256-20SU

• Format - Memory: EEPROMs - Parallel
• Memory Type: EEPROM
• Memory Size: 256K (32K x 8)
• Speed: 200ns
• Interface: Parallel
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• Organization: 32 K x 8
• Interface Type: Parallel
• Access Time: 200 ns
• Output Enable Access Time: 80 ns
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 2.7 V
• Maximum Operating Current: 15 mA
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Operating Supply Voltage: 3.3 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

19. Data Polling Characteristics
Notes:
20. Data Polling Waveforms
21. Toggle Bit Characteristics
Notes:
22. Toggle Bit Waveforms
Notes:
0273K–PEEPR–2/09
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)
t
(2)
DH
t
DH
t
OEH
t
OEH
(1)
t
t
OE
OE
(1)
7.
7.
Min
Min
150
10
10
0
0
0
0
t
WR
Typ
Typ
t
WR
AT28BV256
Max
Max
Units
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
11