M95256-WMW5T Datasheet PDF - ST Microelectronics
| Part Number | M95256-WMW5T | |
| Description | 256/128 Kbit Serial SPI Bus EEPROM With High Speed Clock | |
| Manufacturers | ST Microelectronics | |
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M95256
M95128
256/128 Kbit Serial SPI Bus EEPROM
With High Speed Clock
PRELIMINARY DATA
s SPI Bus Compatible Serial Interface
s Supports Positive Clock SPI Modes
s 5 MHz Clock Rate (maximum)
s Single Supply Voltage:
– 4.5V to 5.5V for M95xxx
– 2.7V to 3.6V for M95xxx-V
– 2.5V to 5.5V for M95xxx-W
– 1.8V to 3.6V for M95xxx-R
s Status Register
s Hardware and Software Protection of the Status
Register
s BYTE and PAGE WRITE (up to 64 Bytes)
s Self-Timed Programming Cycle
s Resizeable Read-Only EEPROM Area
s Enhanced ESD Protection
s 100,000 Erase/Write Cycles (minimum)
s 40 Year Data Retention (minimum)
DESCRIPTION
These SPI-compatible electrically erasable
programmable memory (EEPROM) devices are
organized as 32K x 8 bits (M95256) and 16K x 8
bits (M95128), and operate down to 2.7 V (for the
8
1
PSDIP8 (BN)
0.25 mm frame
8
1
SO8 (MN)
150 mil width
Figure 1. Logic Diagram
VCC
14
1
TSSOP14 (DL)
169 mil width
8
1
SO8 (MW)
200 mil width
Table 1. Signal Names
C Serial Clock
D Serial Data Input
Q Serial Data Output
S Chip Select
W Write Protect
HOLD
Hold
VCC Supply Voltage
VSS Ground
D
C
S
W
HOLD
M95xxx
VSS
Q
AI01789C
March 2000
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
1/21
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Figure 5. Hold Condition Activation
CLOCK
HOLD PIN
MEMORY
STATUS
ACTIVE
HOLD
ACTIVE
Figure 6. Block Diagram
HOLD
W
S
C
D
Q
Control Logic
I/O Shift Register
High Voltage
Generator
Address Register
and Counter
Data
Register
An - 63
M95256, M95128
HOLD
ACTIVE
AI02029B
Status
Register
An
Size of the
Read only
area of the
EEPROM
0000h
64 Bytes
X Decoder
003Fh
Note: 1. The cell An represents the byte at the highest address in the memory
AI02030B
5/21
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for M95256-WMW5T electronic component. |
| Information | Total 21 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ M95256-WMW5T.PDF Datasheet ] | |
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