AT28HC64B-70SU Atmel, AT28HC64B-70SU Datasheet - Page 2

• 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

2. Pin Configurations
2.1
2
Pin Name
A0 - A12
CE
OE
WE
I/O0 - I/O7
NC
DC
28-lead SOIC Top View
AT28HC64B
GND
I/O0
I/O1
I/O2
A12
NC
A7
A6
A5
A4
A3
A2
A1
A0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Function
Addresses
Chip Enable
Output Enable
Write Enable
Data Inputs/Outputs
No Connect
Don’t Connect
28
27
26
25
24
23
22
21
20
19
18
17
16
15
VCC
WE
NC
A8
A9
A11
OE
A10
CE
I/O7
I/O6
I/O5
I/O4
I/O3
2.2
Note:
2.3
VCC
A11
A12
WE
OE
NC
NC
A9
A8
A7
A6
A5
A4
A3
32-lead PLCC Top View
PLCC package pins 1 and 17 are Don’t Connect.
28-lead TSOP Top View
1
2
3
4
5
6
7
8
9
10
11
12
13
14
I/O0
NC
A6
A5
A4
A3
A2
A1
A0
5
6
7
8
9
10
11
12
13
29
28
27
26
25
24
23
22
21
A8
A9
A11
NC
OE
A10
CE
I/O7
I/O6
0274L–PEEPR–2/3/09
28
27
26
25
24
23
22
21
20
19
18
17
16
15
A10
CE
I/O7
I/O6
I/O5
I/O4
I/O3
GND
I/O2
I/O1
I/O0
A0
A1
A2