AT28C256-25PC Atmel, AT28C256-25PC Datasheet - Page 20

• Manufacturer Part Number: AT28C256-25PC
• Manufacturer: Atmel

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

29.2
20
28F – Flatpack
Dimensions in Millimeters and (Inches).
Controlling dimension: Inches.
MIL-STD 1835 F-12 Config B
AT28C256
R
2325 Orchard Parkway
San Jose, CA 95131
18.49(0.728)
18.08(0.712)
0.23(0.009)
0.10(0.004)
PIN #1 ID
10.57(0.416)
TITLE
9.75(0.384)
1.96(0.077)
7.26(0.286)
6.96(0.274)
28F, 28-lead, Non-windowed, Ceramic Bottom-brazed
Flat Package (FlatPack)
1.09(0.043)
1.14(0.045)
0.660(0.026)
9.40(0.370)
6.35(0.250)
0.56(0.022)
0.38(0.015)
1.27(0.050) BSC
1.14(0.045) MAX
3.02(0.119)
2.29(0.090)
DRAWING NO.
28F
0006K–PEEPR–01/08
10/21/03
REV.
B