AT28HC256-90DM/883 Atmel, AT28HC256-90DM/883 Datasheet - Page 19

• Manufacturer Part Number: AT28HC256-90DM/883
• Description: IC EEPROM 256KBIT 90NS 28CDIP
• Manufacturer: Atmel

Specifications of AT28HC256-90DM/883

• 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: -55°C ~ 125°C
• Package / Case: 28-CDIP (0.600", 15.24mm)
• Density: 256Kb
• Interface Type: Parallel
• Organization: 32Kx8
• Access Time (max): 90ns
• Write Protection: Yes
• Data Retention: 10Year
• Operating Supply Voltage (typ): 5V
• Package Type: CDIP
• Operating Temp Range: -55C to 125C
• Supply Current: 80mA
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Operating Temperature Classification: Military
• Mounting: Through Hole
• Pin Count: 28
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: AT28HC256-90DM883

31.3
0007L–PEEPR–03/08
Notes:
32J – PLCC
R
2325 Orchard Parkway
San Jose, CA 95131
1. This package conforms to JEDEC reference MS-016, Variation AE.
2. Dimensions D1 and E1 do not include mold protrusion.
3. Lead coplanarity is 0.004" (0.102 mm) maximum.
0.51(0.020)MAX
Allowable protrusion is .010"(0.254 mm) per side. Dimension D1
and E1 include mold mismatch and are measured at the extreme
material condition at the upper or lower parting line.
45˚ MAX (3X)
1.14(0.045) X 45˚
B
e
TITLE
32J, 32-lead, Plastic J-leaded Chip Carrier (PLCC)
D2
D1
D
IDENTIFIER
PIN NO. 1
E1
1.14(0.045) X 45˚
E
SYMBOL
A
E2
A
A1
A2
D
D1
D2
E
E1
B
B1
e
B1
A2
A1
12.319
11.354
14.859
13.894
12.471
0.318(0.0125)
0.191(0.0075)
3.175
1.524
9.906
0.660
0.330
0.381
COMMON DIMENSIONS
MIN
(Unit of Measure = mm)
E2
1.270 TYP
NOM
–
–
–
–
–
–
–
–
–
–
–
DRAWING NO.
AT28HC256
12.573
11.506
10.922
15.113
14.046
13.487
3.556
2.413
0.813
0.533
MAX
–
32J
Note 2
Note 2
NOTE
10/04/01
REV.
B
19