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Renesas AT25BCM512C-MAHF-T
- Part No.:
- AT25BCM512C-MAHF-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-UFDFN Exposed Pad
- Datasheet:
-
AT25BCM512C-MAHF-T.pdf
- Description:
- IC FLASH 512KBIT SPI 70MHZ 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,275
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Product details
Overview
AT25BCM512C-MAHF-T from Adesto Technologies is a 512 Kbit serial flash memory IC with SPI interface, operating over 2.7V–3.6V supply, supporting 70 MHz max clock frequency, uniform 4-Kbyte sector erase, and industrial temperature range (−40°C to +85°C). It serves as nonvolatile program/data storage in microcontroller-based embedded systems requiring reliable boot code retention.
For engineers reviewing the AT25BCM512C-MAHF-T datasheet, AT25BCM512C-MAHF-T pinout, AT25BCM512C-MAHF-T application, or AT25BCM512C-MAHF-T equivalent, key selection considerations include voltage range compatibility, SPI timing margins, sector erase granularity, deep power-down current, and legacy design migration path from AT25F512B/AT25BCM512B.
Technical Context
This device implements a standard SPI-compatible serial interface with Write Enable (WREN), Write Disable (WRDI), Read Status Register (RDSR), and Page Program (PP) commands. It uses NOR-based flash architecture with single-power-supply operation and no internal charge pump for write/erase.
It supports standard SPI modes 0 and 3, features hardware write protection via WP# pin, and includes a software-controlled 128-byte status register with Write In Progress (WIP), Write Enable Latch (WEL), and Block Protection (BP0–BP2) bits for flexible memory locking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 512 Kbit (64 Kbyte) organized as 8,192 × 8-bit |
| Interface | 4-wire SPI (CLK, SI, SO, CS#); no dual/quad mode support |
| Max Clock Frequency | 70 MHz - enables ≤14.3 ns instruction cycle time for fast read access |
| Erase Granularity | Uniform 4-Kbyte sectors (16 sectors total) - simplifies firmware update partitioning |
| Supply Voltage | 2.7 V to 3.6 V - compatible with 3.3 V logic domains without level shifting |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade embedded control applications |
| Deep Power-Down Current | 1 µA max at VCC = 3.6 V - reduces system standby power in battery-backed designs |
Pinout & Package
AT25BCM512C-MAHF-T is housed in an 8-pin SOIC (Small Outline Integrated Circuit) package, 150 mil width, JEDEC MS-012AC compliant, with gull-wing leads and Pb-free (RoHS-compliant) finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS# | Chip Select Input | Active-low enable for SPI command decoding; must be driven low before each instruction sequence |
| SO | Serial Output | Tri-state open-drain output for read data and status bits; requires external pull-up |
| WP# | Write Protect Input | Hardware lock for top/bottom 4-Kbyte sectors when pulled low; overrides software BP bits |
| VSS | Ground | Reference return path for all digital and core flash operations |
| SI | Serial Input | Command/address/data input during write and erase operations; sampled on rising CLK edge |
| SCK | Serial Clock | Master-generated clock synchronizing all SPI transfers; max 70 MHz rate supported |
| HOLD# | Pause Input | Halts ongoing read transfer without deselecting device; retains address pointer for resume |
| VCC | Power Supply | Single 2.7–3.6 V supply powering logic interface and flash array; no separate I/O voltage required |
Key Features
| Feature | Design Value |
|---|---|
| Single 2.7–3.6 V Supply | Eliminates need for dedicated flash voltage regulator or level shifters in 3.3 V systems |
| Hardware Write Protection (WP#) | Prevents accidental sector erasure or reprogramming during power transients or firmware faults |
| 128-Byte Status Register | Enables real-time monitoring of WIP flag and configurable BP bit locking for secure firmware partitioning |
| 4-Kbyte Uniform Sector Erase | Supports deterministic firmware update timing and avoids partial-sector corruption risks |
| 1 µA Deep Power-Down Mode | Extends battery life in portable IoT nodes where flash remains idle >99% of operational time |
Applications
| Industrial PLC Firmware Storage | Medical Sensor Data Logger |
|---|---|
Use Scenario: Storing bootloader and configuration parameters in programmable logic controllers deployed in factory automation cabinets. IC Role / Device Role / Timing Role: Nonvolatile code storage with guaranteed read reliability across thermal cycling and EMI-rich environments. Use Value: 4-Kbyte sector erase allows atomic firmware patching without disrupting active control tasks; −40°C to +85°C rating ensures operation inside unconditioned enclosures. | Use Scenario: Capturing calibrated sensor readings and event timestamps in handheld diagnostic devices powered by coin-cell batteries. IC Role / Device Role / Timing Role: Low-power persistent data buffer retaining critical diagnostics between periodic USB uploads. Use Value: 1 µA deep power-down current extends usable battery life beyond 12 months; SPI interface minimizes MCU GPIO count. |
| Smart Energy Meter Boot Memory | Automotive Body Control Module |
Use Scenario: Holding secure boot image and tariff tables in ANSI C12.22-compliant electricity meters subject to utility certification. IC Role / Device Role / Timing Role: Certified-read-only storage for cryptographic keys and metering firmware with tamper-resistant write protection. Use Value: Hardware WP# pin prevents unauthorized firmware modification during field servicing; 2.7–3.6 V range matches meter's regulated 3.3 V rail. | Use Scenario: Storing window lift calibration profiles and door lock actuation sequences in Class B automotive ECUs. IC Role / Device Role / Timing Role: EEPROM-replacement nonvolatile storage with faster write throughput and higher endurance than legacy serial EEPROMs. Use Value: 70 MHz SPI clock enables sub-100 ms full-memory reprogramming during dealer updates; SOIC-8 footprint fits constrained PCB layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT25DN512C-MAHF-T | Successor part: 2.3–3.6 V operation, 85 MHz max clock, dual-output read, 256-byte page erase, ultra-deep power-down | Enables lower-voltage host systems and faster read throughput; requires firmware update for new command set | Select for new designs needing extended VCC range or higher performance; not drop-in for AT25BCM512C-MAHF-T without validation |
| MX25L512CM1I-12G | Same density and SOIC-8 package; supports quad SPI (QPI) and 104 MHz clock; 2.7–3.6 V supply; no ultra-deep power-down | Enables higher bandwidth in QPI mode but increases MCU driver complexity; lacks 1 µA deep sleep mode | Choose when system requires >70 MHz read speed and MCU supports QPI; verify layout compatibility with faster edge rates |
Compared with AT25DN512C-MAHF-T and MX25L512CM1I-12G, the AT25BCM512C-MAHF-T offers proven industrial qualification and simpler SPI-only firmware integration, while trading off voltage flexibility and peak speed for long-term supply stability in legacy platforms.
Availability
AT25BCM512C-MAHF-T is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical sensor data logging, and smart energy meter boot memory requiring stable component supply and long-lifecycle support.
Supply support for AT25BCM512C-MAHF-T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Adesto Technologies was a fabless semiconductor company specializing in ultra-low-power nonvolatile memory and analog solutions, acquired by Dialog Semiconductor in 2020 and later integrated into Renesas Electronics.
The AT25BCM512C belongs to Adesto's DataFlash® serial flash product line, designed specifically for embedded systems needing reliable, low-pin-count, single-supply nonvolatile storage with robust industrial temperature operation.
FAQ
What is the maximum clock frequency supported by AT25BCM512C-MAHF-T?
The AT25BCM512C-MAHF-T supports a maximum serial clock (SCK) frequency of 70 MHz under standard operating conditions (VCC = 2.7–3.6 V, TA = −40°C to +85°C). This enables fast sequential reads with minimal instruction overhead. The AT25BCM512C-MAHF-T does not support dual or quad output modes, so timing margins remain consistent across all SPI modes 0 and 3. Always verify setup/hold times against your MCU's SPI peripheral specifications when operating near this limit.
Does AT25BCM512C-MAHF-T support hardware write protection?
Yes, the AT25BCM512C-MAHF-T includes a dedicated hardware write protect pin (WP#) that, when held low, locks the top and bottom 4-Kbyte sectors from program and erase operations regardless of status register settings. This provides fail-safe protection against unintended writes during power-up/down transients or firmware exceptions. The AT25BCM512C-MAHF-T also supports software-controlled block protection via BP0–BP2 bits in the status register for finer-grained memory locking.
What package type is used for AT25BCM512C-MAHF-T?
The AT25BCM512C-MAHF-T uses an 8-pin SOIC package with 150 mil body width, JEDEC MS-012AC outline, gull-wing leads, and RoHS-compliant Pb-free finish. Its pin pitch is 1.27 mm, and it is supplied in tape-and-reel (T) carrier format. This package is industry-standard and compatible with automated SMT assembly processes, including reflow profiles per J-STD-020.
Is AT25BCM512C-MAHF-T pin-compatible with AT25F512B-MAH-T?
Yes, the AT25BCM512C-MAHF-T is pin-compatible with AT25F512B-MAH-T and shares identical SOIC-8 pinout, electrical interface, and command set. Both parts use the same CS#, SO, WP#, VSS, SI, SCK, HOLD#, and VCC connections and operate over 2.7–3.6 V. However, AT25BCM512C-MAHF-T is not functionally identical to AT25DN512C-MAHF-T, which introduces new commands and voltage range extensions.
What is the erase granularity of AT25BCM512C-MAHF-T?
The AT25BCM512C-MAHF-T supports uniform 4-Kbyte sector erase only - there is no chip-erase, block-erase, or page-erase capability. Each of the 16 sectors can be erased independently using the Sector Erase (SE) command. This granularity balances firmware update safety and erase time predictability: a full 64-Kbyte erase requires 16 sequential SE commands, each taking ≤25 ms typical. No smaller erase unit (e.g., 256-byte) is supported in this variant.
AT25BCM512C-MAHF-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-UFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 512Kbit
- Memory Organization:
- 64K x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 70 MHz
- Write Cycle Time - Word, Page:
- 15µs, 5ms
- Access Time:
- -
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-UDFN (2x3)
AT25BCM512C-MAHF-T FAQ
1.How can I place an order for AT25BCM512C-MAHF-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25BCM512C-MAHF-T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AT25BCM512C-MAHF-T reliable?
The price and inventory of AT25BCM512C-MAHF-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25BCM512C-MAHF-T is usually 5 days.
3.What payment methods are accepted for AT25BCM512C-MAHF-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25BCM512C-MAHF-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25BCM512C-MAHF-T?
AT25BCM512C-MAHF-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25BCM512C-MAHF-T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AT25BCM512C-MAHF-T?
For technical support, including AT25BCM512C-MAHF-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25BCM512C-MAHF-T requirements.
6.How does Aetrix verify that AT25BCM512C-MAHF-T is sourced from the original manufacturer or authorized distributors?
All AT25BCM512C-MAHF-T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AT25BCM512C-MAHF-T meets industry standards.
7.What is the process for return or replacement of AT25BCM512C-MAHF-T?
All AT25BCM512C-MAHF-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25BCM512C-MAHF-T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AT25BCM512C-MAHF-T part is unused and in its original packaging.
Return procedure for AT25BCM512C-MAHF-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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