Key facts
- Brand
- STMicroelectronics
- Model
- M95640
- Industry
- Industrial
- Documents
- 6
- Languages
- EN
- Last added
- 2012-08-09
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ST M95640 M95640-W M95640-R M95640-DR 64 Kbit serial SPI bus EEPROMs with high-speed clock handbook
The M95640, M95640-W, M95640-R and M95640-DR are 64 Kbit serial SPI bus EEPROMs with high-speed clock, which are produced by ST. The features of the product are: the memory array is 64 Kb (8 Kbytes) EEPROM, the page size is 32 bytes, it has Write lockable Page (Identification page), supports Byte Write within 5 ms and Page Write within 5 ms, supports Write Protect, the highest clock frequency is 20 MHz, the single supply voltage is 1.8 V to 5.5 V, supports 1 million Write cycles and 40-year data retention, and has Enhanced ESD Protection.
Read onlineSTMicroelectronics M95640 specifications
| Memory Capacity (M95640) | 8192 x 8 bit |
|---|---|
| Memory Capacity (M95320) | 4096 x 8 bit |
| Supply Voltage (Standard) | 4.5 to 5.5V |
| Supply Voltage (-W variant) | 2.5 to 5.5V |
| Supply Voltage (-R variant) | 1.8 to 5.5V |
| Max Clock Rate | 10MHz |
| Write Time | 5ms or 10ms |
| Erase/Write Cycles | >100,000 or >1 million |
| Data Retention | >40 Years |
Source: STMicroelectronics M95640/M95320 64Kbit/32Kbit Serial SPI EEPROM Datasheet
All STMicroelectronics M95640 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
- ST M95640 M95640-W M95640-R M95640-DR 64 Kbit serial SPI bus EEPROMs with high-speed clock handbook
- STMicroelectronics M95640/M95320 64Kbit/32Kbit Serial SPI EEPROM Datasheet 40 p
- ST M95320 M95320-W M95320-R M95320-S M95640 M95640-W M95640-R M95640-S Data Sheet 43 p
- ST M95320/M95320-W/M95320-R/M95320-S/M95640/M95640-W/M95640-R/M95640-S Manual 42 p
- STMicroelectronics M95320/M95640 EEPROM Handbook 43 p
- STMICROELECTRONICS - M95320 M95320-W M95320-R M95320-S M95640 M95640-W M95640-R M95640-S handbook 42 p
Questions answered in these manuals
What SPI modes are supported by these devices?
The devices support CPOL=0, CPHA=0 and CPOL=1, CPHA=1 modes.
From: STMicroelectronics M95640/M95320 64Kbit/32Kbit Serial SPI EEPROM Datasheet
How is data shifted out of the device?
Output data bytes are shifted out most significant bit first on the falling edge of the Serial Clock.
From: STMicroelectronics M95640/M95320 64Kbit/32Kbit Serial SPI EEPROM Datasheet
What are the available clock rates for these EEPROMs?
The devices support clock rates of 20MHz, 10MHz, 5MHz, or 2MHz.
From: ST M95320 M95320-W M95320-R M95320-S M95640 M95640-W M95640-R M95640-S Data Sheet
What is the write time for these devices?
The write time is either 5ms or 10ms depending on the specific configuration.
From: ST M95320 M95320-W M95320-R M95320-S M95640 M95640-W M95640-R M95640-S Data Sheet
What supply voltage ranges are supported for the M95320 and M95640 EEPROMs?
They operate from 4.5 V to 5.5 V for the standard versions, with lower‑voltage options for the ‑W, ‑R, and ‑S variants.
From: ST M95320/M95320-W/M95320-R/M95320-S/M95640/M95640-W/M95640-R/M95640-S Manual
Which clock rates can be used with these EEPROM devices?
The devices support clock rates of 2 MHz, 5 MHz, 10 MHz, or 20 MHz.
From: ST M95320/M95320-W/M95320-R/M95320-S/M95640/M95640-W/M95640-R/M95640-S Manual