M24256-A125 Datasheet, PDF (6/40 Pages) STMicroelectronics – Automotive 256-Kbit serial IC bus EEPROM with 1 MHz clock

Description
1
Description
M24256-A125
The M24256-A125 is a 256-Kbit serial EEPROM Automotive grade device operating up to
125 °C. The M24256-A125 is compliant with the very high level of reliability defined by the
Automotive standard AEC-Q100 grade 1.
The device is accessed by a simple serial I²C compatible interface running up to 1 MHz.
The memory array is based on advanced true EEPROM technology (Electrically Erasable
PROgrammable Memory). The M24256-A125 is a byte-alterable memory (32 K × 8 bits)
organized as 512 pages of 64 bytes in which the data integrity is significantly improved with
an embedded Error Correction Code logic.
The M24256-A125 offers an additional Identification Page (64 bytes) in which the ST device
identification can be read. This page can also be used to store sensitive application
parameters which can be later permanently locked in read-only mode.
Figure 1. Logic diagram
7#
%
%
3#,
3$!
#ONTROLLOGIC
(IGHVOLTAGE
GENERATOR
)/SHIFTREGISTER
!DDRESSREGISTER
ANDCOUNTER
$ATA
REGISTER
6/40
PAGE
)DENTIFICATIONPAGE
8DECODER
DocID023506 Rev 4
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