M95256-WMW6G STMicroelectronics, M95256-WMW6G Datasheet - Page 6
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M95256-WMW6G
Manufacturer Part Number
M95256-WMW6G
Description
IC EEPROM 256KBIT 5MHZ 8SOIC
Manufacturer
STMicroelectronics
Datasheet
1.M95256-WMN6TP.pdf
(47 pages)
Specifications of M95256-WMW6G
Format - Memory
EEPROMs - Serial
Memory Type
EEPROM
Memory Size
256K (32K x 8)
Speed
5MHz
Interface
SPI, 3-Wire Serial
Voltage - Supply
2.5 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Package / Case
8-SOIC (5.3mm Width), 8-SOP, 8-SOEIAJ
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-8610-5
M95256-WMW6G
M95256-WMW6G
Available stocks
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Description
1
Caution:
6/47
Description
The M95256, M95256-W, M95256-R and M95256-DR are electrically erasable
programmable memory (EEPROM) devices. They are accessed by a high speed SPI-
compatible bus. Their memory array is organized as 32768 × 8 bits.
The M95256-DR also offers an additional page, named the Identification Page (64 bytes)
which can be written and (later) permanently locked in Read-only mode. This Identification
Page offers flexibility in the application board production line, as the Identification Page can
be used to store unique identification parameters and/or parameters specific to the
production line.
The device is accessed by a simple serial interface that is SPI-compatible.
Figure 1.
The bus signals are C, D and Q, as shown in
The device is selected when Chip Select (S) is taken low. Communications with the device
can be interrupted using Hold (HOLD).
Figure 2.
1. See
As EEPROM cells loose their charge (and so their binary value) when exposed to ultra violet
(UV) light, EEPROM dice delivered in wafer form or in WLCSP package by
ST Microelectronics must never be exposed to UV light.
Section 10: Package mechanical data
Logic diagram
8-pin package connections
HOLD
Doc ID 12276 Rev 13
W
D
C
S
V SS
W
Q
S
for package dimensions, and how to identify pin-1.
V CC
V SS
1
2
3
4
M95256
M95256
Table 1
M95256-DR, M95256, M95256-W, M95256-R
8
7
6
5
V CC
HOLD
C
D
and
Figure
Q
AI12361
AI12362
1.