AT28HC64B-70SU Atmel, AT28HC64B-70SU Datasheet - Page 9

• Manufacturer Part Number: AT28HC64B-70SU
• Description: IC EEPROM 64KBIT 70NS 28SOIC
• Manufacturer: Atmel

Specifications of AT28HC64B-70SU

• Format - Memory: EEPROMs - Parallel
• Memory Type: EEPROM
• Memory Size: 64K (8K x 8)
• Speed: 70ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• Density: 64Kb
• Interface Type: Parallel
• Organization: 8Kx8
• Access Time (max): 70ns
• Write Protection: Yes
• Data Retention: 10Year
• Operating Supply Voltage (typ): 5V
• Package Type: SOIC
• 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
• Access Time: 70 ns
• Output Enable Access Time: 35 ns
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 4.5 V
• Maximum Operating Current: 40 mA
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Operating Supply Voltage: 5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

16. Page Mode Characteristics
17. Page Mode Write Waveforms
Notes:
18. Chip Erase Waveforms
0274L–PEEPR–2/3/09
Symbol
t
t
t
t
t
t
t
t
t
WC
WC
AS
AH
DS
DH
WP
BLC
WPH
t
t
V
S
W
H
= t
= 10 ms (min.)
= 12.0 V ±0.5 V
1. A6 through A12 must specify the same page address during each high to low transition of WE (or CE).
2. OE must be high only when WE and CE are both low.
H
= 5 µs (min.)
Parameter
Write Cycle Time
Write Cycle Time (Use AT28HC64BF))
Address Setup Time
Address Hold Time
Data Setup Time
Data Hold Time
Write Pulse Width
Byte Load Cycle Time
Write Pulse Width High
A0 -A12
DATA
WE
OE
CE
VALID ADD
t
AS
VALID DATA
t
AH
t
t
WP
DS
(1)(2)
t
DH
t
S
t
WPH
t
W
t
H
t
BLC
Min
100
50
50
50
0
0
t
WC
Max
150
10
2
Units
ms
ms
ns
ns
ns
ns
ns
µs
ns
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