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M95320-WMB3P Datasheet(PDF) 5 Page - STMicroelectronics |
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M95320-WMB3P Datasheet(HTML) 5 Page - STMicroelectronics |
5 / 42 page 5/42 M95640, M95320 SUMMARY DESCRIPTION These electrically erasable programmable memo- ry (EEPROM) devices are accessed by a high speed SPI-compatible bus. The M95320, M95320-W, M95320-R and M95320-S are 32Kbit devices organized as 4096 x 8 bits. The M95640, M95640-W, M95640-R and M95640-S are 64Kbit devices organized as 8192 x 8 bits. The device is accessed by a simple serial interface that is SPI-compatible. The bus signals are C, D and Q, as shown in Table 3. and Figure 2.. The device is selected when Chip Select (S) is tak- en Low. Communications with the device can be interrupted using Hold (HOLD). The devices are available in three different ver- sions identified by a specific marking (see Table 2.). Table 2. How to Identify Previous, Current and New Products by the Process Identification Letter Note: 1. For further information, please ask your ST Sales Office for Process Change Notices. Figure 2. Logic Diagram Figure 3. 8 Pin Package Connections Note: 1. See PACKAGE MECHANICAL section for package di- mensions and how to identify pin-1. 2. NC, Not Connected. Table 3. Signal Names Devices Root Part Numbers Markings on Previous Products1 Markings on Current Products1 Markings on New Products1 M95320, M95640, M95320-W, M95640-W Device Grade 6 xxxxS xxxxV xxxxP M95320, M95640, M95320-W, M95640-W Device Grade 3 xxxxS xxxxB xxxxP M95320-R, M95640-R - - xxxxP M95320-S, M95640-S - - xxxxP AI01789C S VCC M95xxx HOLD VSS W Q C D 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 VSS C HOLD Q SVCC W AI01790D M95xxx 1 2 3 4 8 7 6 5 |
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