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M95128

ST Microelectronics
Part Number M95128
Manufacturer ST Microelectronics
Description 256/128 Kbit Serial SPI Bus EEPROM With High Speed Clock
Published May 6, 2005
Detailed Description M95256 M95128 256/128 Kbit Serial SPI Bus EEPROM With High Speed Clock PRELIMINARY DATA s s s s SPI Bus Compatible Seri...
Datasheet PDF File M95128 PDF File

M95128
M95128

Overview
M95256 M95128 256/128 Kbit Serial SPI Bus EEPROM With High Speed Clock PRELIMINARY DATA s s s s SPI Bus Compatible Serial Interface Supports Positive Clock SPI Modes 5 MHz Clock Rate (maximum) 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 8 1 PSDIP8 (BN) 0.
25 mm frame 14 1 TSSOP14 (DL) 169 mil width s s Status Register Hardware and Software Protection of the Status Register BYTE and PAGE WRITE (up to 64 Bytes) Self-Timed Programming Cycle Resizeable Read-Only EEPROM Area Enhanced ESD Protection 100,000 Erase/Write Cycles (minimum) 40 Year Data Retention (minimum) s s s s s s 8 1 SO8 (MN) 150 mil width 8 1 SO8 (MW) 200 mil width 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 Figure 1.
Logic Diagram VCC Table 1.
Signal Names C D Q Serial Clock Serial Data Input Serial Data Output D C S W M95xxx Q S W HOLD VCC VSS Chip Select HOLD Write Protect Hold Supply Voltage Ground VSS 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 M95256, M95128 Figure 2A.
DIP Connections Figure 2C.
TSSOP Connections M95128 M95xxx S Q W VSS 1 2 3 4 8 7 6 5 AI01790C VCC HOLD C D S Q NC NC NC W VSS 1 2 3 4 5 6 7 14 13 12 11 10 9 8 AI02346 VCC HOLD NC NC NC C D Note: 1.
NC = Not Connected Figure 2B.
SO Connections -V version), 2.
5 V (for the -W version), and down to 1.
8 V (for the -R version of each device).
The M95256 and M95128 are available in Plastic Dual-in-Line, Plastic Small Outline and Thin Shrink Small Outline packages.
Each memory device is accessed by a simple serial interface that is SPI bus compatible.
The bus signals are C, D and Q, as shown in Table 1 and Figure 3.
The device is selected when the chip select inpu...


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