AT28HC256F-90SU Atmel, AT28HC256F-90SU Datasheet - Page 20

• Manufacturer Part Number: AT28HC256F-90SU
• Description: IC EEPROM 256KBIT 90NS 28SOIC
• Manufacturer: Atmel

Specifications of AT28HC256F-90SU

• Format - Memory: EEPROMs - Parallel
• Memory Type: EEPROM
• Memory Size: 256K (32K x 8)
• Speed: 90ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• Density: 256Kb
• Interface Type: Parallel
• Organization: 32Kx8
• Access Time (max): 90ns
• Write Protection: Yes
• Data Retention: 10Year
• Operating Supply Voltage (typ): 5V
• Package Type: SOIC
• Operating Temp Range: -40C to 85C
• Supply Current: 80mA
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 28
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

28.4
20
32L – LCC
Dimensions in Millimeters and (Inches).
Controlling dimension: Inches.
MIL-STD 1835 C-12
AT28HC256
R
2325 Orchard Parkway
San Jose, CA 95131
10.16(0.400) BSC
14.22(0.560)
13.72(0.540)
1.27(0.050) TYP
TITLE
32L, 32-pad, Non-windowed, Ceramic Lid, Leadless Chip
Carrier (LCC)
2.41(0.095)
1.91(0.075)
7.62(0.300) BSC
11.63(0.458)
11.23(0.442)
PIN 1
1.40(0.055)
1.14(0.045)
0.305(0.012)
0.178(0.007)
1.02(0.040) X 45˚
2.16(0.085)
1.65(0.065)
0.737(0.029)
0.533(0.021)
0.635(0.025)
0.381(0.015)
INDEX CORNER
RADIUS
1.91(0.075)
1.40(0.055)
X 45˚
2.54(0.100)
2.16(0.085)
DRAWING NO.
32L
0007N–PEEPR–9/09
10/21/03
REV.
B