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M95020

ST Microelectronics
Part Number M95020
Manufacturer ST Microelectronics
Description 4Kbit / 2Kbit and 1Kbit Serial SPI Bus EEPROM With High Speed Clock
Published May 6, 2005
Detailed Description M95040 M95020, M95010 4Kbit, 2Kbit and 1Kbit Serial SPI Bus EEPROM With High Speed Clock FEATURES SUMMARY s Compatible w...
Datasheet PDF File M95020 PDF File

M95020
M95020

Overview
M95040 M95020, M95010 4Kbit, 2Kbit and 1Kbit Serial SPI Bus EEPROM With High Speed Clock FEATURES SUMMARY s Compatible with SPI Bus Serial Interface (Positive Clock SPI Modes) s Figure 1.
Packages Single Supply Voltage: – 4.
5V to 5.
5V for M950x0 – 2.
5V to 5.
5V for M950x0-W – 1.
8V to 3.
6V for M950x0-S s s s s s s s s 5 MHz Clock Rate (maximum) Status Register BYTE and PAGE WRITE (up to 16 Bytes) Self-Timed Programming Cycle Adjustable Size Read-Only EEPROM Area Enhanced ESD Protection More than 1,000,000 Erase/Write Cycles More than 40 Year Data Retention 8 1 PDIP8 (BN) 8 1 SO8 (MN) 150 mil width TSSOP8 (DW) 169 mil width July 2003 1/33 M95040, M95020, M95010 SUMMARY DESCRIPTION The M95040 is a 4 Kbit (512 x 8) electrically erasable programmable memory (EEPROM), accessed by a high speed SPI-compatible bus.
The other members of the family (M95020, M95010) are identical, though proportionally smaller (2 and 1 Kbit, respectively).
Each device is accessed by a simple serial interface that is SPI-compatible.
The bus signals are C, D and Q, as shown in Table 1 and Figure 2.
The device is selected when Chip Select (S) is taken Low.
Communications with the device can be interrupted using Hold (HOLD).
WRITE instructions are disabled by Write Protect (W).
Figure 2.
Logic Diagram Note: 1.
See page 28 (onwards) for package dimensions, and how to identify pin-1.
Figure 3.
DIP, SO and TSSOP Connections M95xxx S Q W VSS 1 2 3 4 8 7 6 5 AI01790D VCC HOLD C D VCC Table 1.
Signal Names D C S W HOLD M95xxx Q C D Q Serial Clock Serial Data Input Serial Data Output Chip Select Write Protect Hold Supply Voltage Ground S W HOLD VCC VSS AI01789C VSS 2/33 M95040, M95020, M95010 SIGNAL DESCRIPTION VCC must be held within the specified range: VCC(min) to VCC(max).
All of the input and output signals can be held High or Low (according to voltages of VIH, VOH, VIL or VOL, as specified in Tables 12 to 16).
These signals are described next.
Serial Data Output (Q) This output si...


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