AT28C256-25PC Atmel, AT28C256-25PC Datasheet - Page 2
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AT28C256-25PC
Manufacturer Part Number
AT28C256-25PC
Description
Manufacturer
Atmel
Datasheet
1.AT28C256-25PC.pdf
(27 pages)
Specifications of AT28C256-25PC
Density
256Kb
Interface Type
Parallel
Organization
32Kx8
Access Time (max)
250ns
Write Protection
Yes
Data Retention
10Year
Operating Supply Voltage (typ)
5V
Package Type
PDIP
Operating Temp Range
0C to 70C
Supply Current
50mA
Operating Supply Voltage (min)
4.5V
Operating Supply Voltage (max)
5.5V
Operating Temperature Classification
Commercial
Mounting
Through Hole
Pin Count
28
Lead Free Status / Rohs Status
Not Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT28C256-25PC
Manufacturer:
AT
Quantity:
31
2. Pin Configurations
2.1
2.2
2
Pin Name
A0 - A14
CE
OE
WE
I/O0 - I/O7
NC
DC
VCC
A11
A13
A14
A12
WE
OE
A9
A8
A7
A6
A5
A4
A3
28-lead TSOP Top View
28-lead PGA Top View
AT28C256
1
2
3
4
5
6
7
8
9
10
11
12
13
14
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
Function
Addresses
Chip Enable
Output Enable
Write Enable
Data Inputs/Outputs
No Connect
Don’t Connect
2.3
Note:
2.4
32-pad LCC, 28-lead PLCC Top View
PLCC package pins 1 and 17 are Don’t Connect.
28-lead Cerdip/PDIP/Flatpack/SOIC –
Top View
I/O0
NC
A6
A5
A4
A3
A2
A1
A0
GND
I/O0
I/O1
I/O2
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
5
6
7
8
9
10
11
12
13
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
29
28
27
26
25
24
23
22
21
VCC
WE
A13
A8
A9
A11
OE
A10
CE
I/O7
I/O6
I/O5
I/O4
I/O3
A8
A9
A11
NC
OE
A10
CE
I/O7
I/O6
0006K–PEEPR–01/08