AT25128B/AT25256B
Product Identification System
To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office.
A T 2 5 1 2 8 B - S S H L - B
Shipping Carrier Option
B = Bulk (Tubes)
T
= Tape and Reel, Standard Quantity Option
E = Tape and Reel, Extended Quantity Option
Product Family
25 = Standard SPI
Serial EEPROM
Operating Voltage
L
= 1.8V to 5.5V
Device Grade or
Wafer/Die Thickness
H or U = Industrial Temperature Range
(-40°C to +85°C)
Device Density
128 = 128-Kilobit
256 = 256-Kilobit
11
= 11mil Wafer Thickness
Device Revision
Package Option
SS
X
= SOIC
= TSSOP
MA = 2.0mm x 3.0mm UDFN
= VFBGA
C
WWU = Wafer Unsawn
WDT = Die in Tape and Reel
Examples:
Device
Package Package Package
Shipping Carrier
Option
Device Grade
Drawing
Code
Option
AT25128B‑SSHL‑B
AT25128B‑SSHL‑T
AT25256B‑SSHL‑T
AT25128B‑XHL‑B
AT25256B‑XHL‑T
AT25128B‑MAHL‑E
AT25256B‑MAHL‑T
AT25256B‑MAHL‑E
AT25256B‑CUL‑T
SOIC
SOIC
SN
SN
SS
SS
SS
X
Bulk (Tubes)
Tape and Reel
Tape and Reel
Bulk (Tubes)
Industrial
Temperature
(-40°C to 85°C)
SOIC
SN
TSSOP
TSSOP
UDFN
UDFN
UDFN
VFBGA
ST
ST
X
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Q4B
Q4B
Q4B
8U2-1
MA
MA
MA
C
Microchip Devices Code Protection Feature
Note the following details of the code protection feature on Microchip devices:
• Microchip products meet the specification contained in their particular Microchip Data Sheet.
DS20006193A-page 39
© 2019 Microchip Technology Inc.
MICROCHIP [ MICROCHIP ]
