Factory Lead Time  

14 Weeks

Mount  

Surface Mount

Mounting Type  

Surface Mount

Package / Case  

28-SOIC (0.295, 7.50mm Width)

Number of Pins  

28

Memory Types  

Non-Volatile

Operating Temperature  

-40°C~85°C TC

Packaging  

Tube

Published  

1997

JESD-609 Code  

e3

Pbfree Code  

yes

Part Status  

Active

Moisture Sensitivity Level (MSL)  

3 (168 Hours)

Number of Terminations  

28

Terminal Finish  

Matte Tin (Sn) - annealed

Voltage - Supply  

4.5V~5.5V

Terminal Position  

DUAL

Peak Reflow Temperature (Cel)  

250

Number of Functions  

1

Supply Voltage  

5V

Terminal Pitch  

1.27mm

Frequency  

5MHz

Time@Peak Reflow Temperature-Max (s)  

40

Base Part Number  

AT28C256

Operating Supply Voltage  

5V

Power Supplies  

5V

Interface  

Parallel, SPI

Memory Size  

256Kb 32K x 8

Nominal Supply Current  

50mA

Access Time  

150ns

Memory Format  

EEPROM

Memory Interface  

Parallel

Organization  

32KX8

Memory Width  

8

Write Cycle Time - Word, Page  

10ms

Density  

256 kb

Standby Current-Max  

0.0002A

Programming Voltage  

5V

Endurance  

10000 Write/Erase Cycles

Write Cycle Time-Max (tWC)  

10ms

Data Retention Time-Min  

10

Write Protection  

HARDWARE/SOFTWARE

Data Polling  

YES

Toggle Bit  

YES

Page Size  

64words

Length  

17.9mm

Height Seated (Max)  

2.65mm

Width  

7.5mm

REACH SVHC  

No SVHC

Radiation Hardening  

No

RoHS Status  

ROHS3 Compliant

Lead Free  

Lead Free