Product overview
Description
The M95256 devices are electrically erasable programmable memories (EEPROMs) organized as 32768 x 8 bits, accessed through the SPI bus.
The M95256-W can operate with a supply voltage from 2.5 V to 5.5 V, the M95256-R can operate with a supply voltage from 1.8 V to 5.5 V and the M95256-DF can operate with a supply voltage from 1.7 V to 5.5 V, over an ambient temperature range of -40 °C / +85 °C.
The M95256-DF, -DR or -DW (hereinafter referred to as M95256-Dx) offer an additional page, named the Identification page (64 bytes). The Identification page can be used to store sensitive application parameters that can be (later) permanently locked in read-only mode.
The SPI bus signals are C, D and Q, as shown in Figure 1 and Table 1. The device is selected when Chip select (S) is driven low. Communications with the device can be interrupted when the HOLD is driven low.
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All features
- Compatible with the serial peripheral interface (SPI) bus
- Memory array
- 256-Kbit (32 Kbytes) of EEPROM
- Page size: 64 bytes
- Additional write lockable page (Identification page)
- Write time
- Byte Write within 5 ms
- Page Write within 5 ms
- Write protect
- quarter array
- half array
- whole memory array
- High-speed clock: 20 MHz
- Single supply voltage:
- 2.5 V to 5.5 V for M95256-W
- 1.8 V to 5.5 V for M95256-R
- 1.7 V to 5.5 V for M95256-DF
- Operating temperature range: from -40 °C up to +85 °C
- Enhanced ESD protection
- More than 4 million Write cycles
- More than 200-year data retention
- Packages
- SO8N (ECOPACK2)
- TSSOP8 (ECOPACK2)
- UFDFPN8 (ECOPACK2)
- WLCSP8 (ECOPACK2)
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STMicroelectronics - M95256-DF
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All resources
| Resource title | Version | Latest update |
|---|
IBIS models (5 of 11)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| ZIP | 1.0 | 27 Jun 2024 | 27 Jun 2024 | |
| ZIP | 1.0 | 13 Jan 2023 | 13 Jan 2023 | |
| ZIP | 1.0 | 04 Oct 2021 | 04 Oct 2021 | |
| ZIP | 1.0 | 17 Mar 2023 | 17 Mar 2023 | |
| ZIP | 1.0 | 06 Jun 2023 | 06 Jun 2023 | |
| ZIP | 1.0 | 25 Jan 2021 | 25 Jan 2021 | |
| ZIP | 1.0 | 25 Jan 2021 | 25 Jan 2021 | |
| ZIP | 1.0 | 25 Jan 2021 | 25 Jan 2021 | |
| 7Z | 1.1 | 07 Jun 2023 | 07 Jun 2023 | |
| ZIP | 1.0 | 25 Jan 2021 | 25 Jan 2021 | |
| ZIP | 1.0 | 25 Jan 2021 | 25 Jan 2021 |
CAD Symbol & Footprint models (1)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| ZIP | 1.0 | 27 Apr 2021 | 27 Apr 2021 |
Verilog models (2)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| ZIP | 1.0 | 22 Jan 2021 | 22 Jan 2021 | |
| ZIP | 1.0 | 28 Jan 2021 | 28 Jan 2021 |
Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| M95256-DFCS6TP/K | Active | WLCSP | Industrial | Ecopack2 | |
| M95256-DFDW6TP | Active | TSSOP-8L | Industrial | Ecopack2 | |
| M95256-DFMC6TG | Active | UFDFPN8 | Industrial | Ecopack2 | |
| M95256-DFMN6TP | Active | SO8 | Industrial | Ecopack2 | |
| M95256DFKW20I/90 | Active | WAFER | Industrial | N/A | |
M95256-DFCS6TP/K
Package:
WLCSPMaterial Declaration**:
M95256DFKW20I/90
Package:
WAFERMaterial Declaration**:
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Sample & Buy
| Part Number | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating temperature (°C) | Operating Temperature (°C) (max) | Free Samples | ESample Max Qty | Replacement Product | ||
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| M95256-DFCS6TP/K | | | distributors No availability of distributors reported, please contact our sales office |
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| M95256-DFMC6TG | | | distributors No availability of distributors reported, please contact our sales office |
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| M95256-DFMN6TP | | | distributors No availability of distributors reported, please contact our sales office |
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| M95256-DFDW6TP | | | distributors No availability of distributors reported, please contact our sales office |
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| M95256DFKW20I/90 | | | distributors No availability of distributors reported, please contact our sales office |
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M95256-DFCS6TP/K Active
M95256-DFMC6TG Active
M95256-DFMN6TP Active
M95256-DFDW6TP Active
M95256DFKW20I/90 Active
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors