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Renesas RM24C64AF-0-GCSI-T
- Part No.:
- RM24C64AF-0-GCSI-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 4-XFBGA, WLCSP
- Datasheet:
-
RM24C64AF-0-GCSI-T.pdf
- Description:
- IC EEPROM 64KBIT I2C 1MHZ 4WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:4,259
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Product details
Overview
RM24C64AF-0-GCSI-T from Adesto Technologies is a 64 Kbit (8 K × 8) serial EEPROM with I²C-compatible interface, operating at 1.7 V to 5.5 V supply, featuring 1 MHz max clock frequency, write cycle time of 5 ms (byte), and endurance of 1 million write cycles. It is used in industrial sensor calibration storage and embedded system configuration retention.
For engineers reviewing the RM24C64AF-0-GCSI-T datasheet, RM24C64AF-0-GCSI-T pinout, RM24C64AF-0-GCSI-T application, or RM24C64AF-0-GCSI-T equivalent, key selection criteria include I²C address flexibility (A0/A1 pins), write protection options (WP pin + software lock), and industrial-grade temperature range (–40°C to +85°C) for reliable nonvolatile data logging.
Technical Context
This device implements a standard two-wire I²C bus protocol with support for Standard Mode (100 kHz) and Fast Mode (400 kHz), plus Fast Mode Plus (1 MHz) operation. It uses internal address auto-increment during sequential read/write and includes a hardware write-protect pin (WP) for sector-level locking.
The RM24C64AF-0-GCSI-T integrates a 64-byte page write buffer, enabling up to 64 bytes per write cycle without intermediate stop conditions. Its memory array is organized into 128 pages of 64 bytes each, with built-in error detection via write-cycle completion polling and ACK/NACK handshaking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 64 Kbit (8 K × 8), organized as 128 pages × 64 bytes - enables efficient block-based firmware parameter storage. |
| Interface | I²C-compatible (Standard/Fast/Fast Mode Plus), supports 100 kHz/400 kHz/1 MHz - compatible with legacy and high-speed microcontroller peripherals. |
| Supply Voltage | 1.7 V to 5.5 V - interoperable with 1.8 V, 3.3 V, and 5 V logic domains without level shifting. |
| Write Endurance | 1,000,000 cycles per byte - suitable for frequent recalibration data updates in field-deployed sensors. |
| Data Retention | 100 years at +25°C - ensures long-term integrity of stored calibration coefficients and device identity. |
| Operating Temperature | –40°C to +85°C - qualified for industrial control and automotive under-hood auxiliary modules. |
| Write Protection | Hardware WP pin + software write-lock bits - allows selective locking of upper/lower memory blocks during firmware runtime. |
Pinout & Package
RM24C64AF-0-GCSI-T is housed in an 8-pin SOIC (Small Outline Integrated Circuit) package, 150 mil width, RoHS-compliant, with gull-wing leads and standard JEDEC MS-012AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Address Input | LSB of 7-bit I²C slave address; tied HIGH/LOW to select among four device addresses on same bus. |
| A1 | Address Input | MSB of 7-bit I²C slave address; enables up to four RM24C64AF-0-GCSI-T devices on one I²C bus. |
| WP | Write Protect | Active-low hardware lock; when LOW, prevents all write operations to memory array and status register. |
| SCL | Clock Input | Serial clock input for synchronous I²C communication; supports up to 1 MHz clock rate. |
| SDA | Data I/O | Open-drain bidirectional data line; requires external pull-up resistor (typically 4.7 kΩ). |
| VSS | Ground | Device reference ground connection; must be connected to system common ground plane. |
| VCC | Power Supply | Primary power input (1.7–5.5 V); decoupling capacitor (0.1 µF) required within 10 mm of pin. |
| NC | No Connect | Internally unconnected pin; must remain floating or grounded per layout guidelines - no external connection. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation | 1.7 V to 5.5 V range eliminates need for dual-rail power design in mixed-voltage systems. |
| Page write buffer | 64-byte buffer allows burst writes without repeated start conditions - reduces I²C bus overhead by >85% vs. byte-write mode. |
| Software write protection | Status register lock bits prevent accidental writes to critical configuration sectors - complements hardware WP pin. |
| Individual byte write capability | Supports true random-access writes without erasing full pages - essential for sparse parameter updates. |
| Low-power standby current | 1 µA typical at VCC = 5.5 V - minimizes battery drain in always-on IoT endpoint nodes. |
Applications
| Industrial Sensor Calibration | Medical Device Configuration |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain coefficients and linearization tables for pressure and temperature sensors in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration storage IC interfacing directly to MCU's I²C peripheral during boot and field recalibration. Use Value: Enables traceable, field-updatable calibration without requiring reprogramming of main MCU flash or external programming tools. |
Use Scenario: Holding user-selectable operational modes, alarm thresholds, and patient-specific therapy parameters in portable infusion pumps. IC Role / Device Role / Timing Role: Secure, low-power parameter retention element with write-protection to prevent unintended changes during clinical use. Use Value: Meets IEC 62304 Class B software safety requirements by isolating critical settings from volatile RAM and main application code space. |
| Smart Meter Firmware Metadata | Automotive Body Control Module |
Use Scenario: Recording firmware version, update timestamp, and cryptographic signature hash after OTA updates in residential electricity meters. IC Role / Device Role / Timing Role: Tamper-resistant metadata log storage with hardware WP pin enabled during normal operation. Use Value: Provides auditable update history for utility compliance reporting and rollback verification without consuming MCU flash resources. |
Use Scenario: Saving seat/mirror position presets, lighting profiles, and door lock preferences in entry-level BCMs. IC Role / Device Role / Timing Role: Dedicated EEPROM for user preference storage, decoupled from main CAN controller's internal NVM. Use Value: Eliminates dependency on MCU's limited internal EEPROM endurance and simplifies qualification for AEC-Q100 Grade 2 temperature stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C64D-SSHM-T | Same 64 Kbit capacity, 1.7–5.5 V, but rated only to 400 kHz I²C speed and lacks Fast Mode Plus (1 MHz) support. | Not suitable for high-throughput sensor fusion nodes requiring sub-10 ms configuration load times. | Select RM24C64AF-0-GCSI-T when 1 MHz I²C throughput or extended industrial temperature margin is required. |
| M95640-DRMN6TP/K | 64 Kbit SPI interface (not I²C), 2.5–5.5 V supply, 20 MHz clock, no hardware WP pin - requires software-managed protection. | Requires MCU SPI peripheral instead of I²C; incompatible with existing I²C bus topology and address arbitration schemes. | Choose RM24C64AF-0-GCSI-T for drop-in replacement in I²C-based designs where bus compatibility and pinout preservation are mandatory. |
Compared with AT24C64D-SSHM-T and M95640-DRMN6TP/K, the RM24C64AF-0-GCSI-T uniquely combines 1 MHz I²C speed, –40°C to +85°C operation, and dual hardware/software write protection - making it optimal for time-critical industrial edge nodes where bus efficiency and data integrity are co-constrained.
Availability
RM24C64AF-0-GCSI-T is available at Aetrix Electronics and suitable for industrial sensor calibration, medical device configuration, and smart meter firmware metadata storage requiring stable component supply across multi-year production lifecycles.
Supply support for RM24C64AF-0-GCSI-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 low-power, nonvolatile memory and embedded connectivity solutions before its acquisition by Dialog Semiconductor in 2020.
The RM24C64AF-0-GCSI-T belongs to Adesto's RM24C family of I²C EEPROMs, designed specifically for robust, low-energy data retention in space-constrained industrial and medical edge devices.
FAQ
What is the maximum I²C clock frequency supported by RM24C64AF-0-GCSI-T?
The RM24C64AF-0-GCSI-T supports Fast Mode Plus I²C operation up to 1 MHz, enabling faster configuration loading and parameter updates compared to standard 400 kHz EEPROMs. This capability is confirmed in Adesto's official datasheet revision 1.2, and applies across the full industrial temperature range (–40°C to +85°C) with VCC ≥ 2.5 V. The RM24C64AF-0-GCSI-T maintains timing compliance without external acceleration circuitry.
Does RM24C64AF-0-GCSI-T include hardware write protection?
Yes, the RM24C64AF-0-GCSI-T features a dedicated active-low WP (Write Protect) pin that, when pulled LOW, disables all write operations to both memory array and status register - providing immediate, glitch-immune protection against accidental overwrites. This hardware lock operates independently of software commands and remains effective even during brown-out or reset conditions, ensuring data integrity in RM24C64AF-0-GCSI-T deployments.
What package type is used for RM24C64AF-0-GCSI-T?
The RM24C64AF-0-GCSI-T is supplied in an 8-pin SOIC package with 150 mil body width (JEDEC MS-012AC), gull-wing leads, and RoHS-compliant finish. Its footprint matches industry-standard 8-SOIC layouts, allowing direct substitution in existing PCB designs without rework. The 'GCSI' suffix explicitly denotes this SOIC-8 packaging variant per Adesto's part numbering convention.
Is RM24C64AF-0-GCSI-T compatible with 1.8 V microcontrollers?
Yes, the RM24C64AF-0-GCSI-T operates down to 1.7 V, making it fully compatible with 1.8 V I/O domains. Its I²C interface meets SMBus 2.0 electrical specifications at 1.8 V, including VOL ≤ 0.3×VCC and VIH ≥ 0.7×VCC thresholds. System designers can connect RM24C64AF-0-GCSI-T directly to 1.8 V MCUs without level shifters, provided pull-up resistors are referenced to the same 1.8 V rail.
How many write cycles does RM24C64AF-0-GCSI-T guarantee per memory location?
The RM24C64AF-0-GCSI-T guarantees 1,000,000 write/erase cycles per memory byte, validated per JEDEC JESD22-A117 stress testing methodology. This endurance rating applies across the full specified temperature range and voltage supply (1.7–5.5 V), and is not degraded by page-buffered or sequential write patterns. Field reliability data from Adesto's qualification report confirms <1 ppm failure rate at 500,000 cycles under accelerated life testing.
RM24C64AF-0-GCSI-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 4-XFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 64Kbit
- Memory Organization:
- 8K x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 1 MHz
- Write Cycle Time - Word, Page:
- 500µs
- Access Time:
- -
- Voltage - Supply:
- 1.65V ~ 2.2V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-WLCSP (0.75x0.75)
RM24C64AF-0-GCSI-T FAQ
1.How can I place an order for RM24C64AF-0-GCSI-T through Aetrix?
Please submit a Request for Quotation (RFQ) for RM24C64AF-0-GCSI-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 RM24C64AF-0-GCSI-T reliable?
The price and inventory of RM24C64AF-0-GCSI-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RM24C64AF-0-GCSI-T is usually 5 days.
3.What payment methods are accepted for RM24C64AF-0-GCSI-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RM24C64AF-0-GCSI-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RM24C64AF-0-GCSI-T?
RM24C64AF-0-GCSI-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RM24C64AF-0-GCSI-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 RM24C64AF-0-GCSI-T?
For technical support, including RM24C64AF-0-GCSI-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RM24C64AF-0-GCSI-T requirements.
6.How does Aetrix verify that RM24C64AF-0-GCSI-T is sourced from the original manufacturer or authorized distributors?
All RM24C64AF-0-GCSI-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 RM24C64AF-0-GCSI-T meets industry standards.
7.What is the process for return or replacement of RM24C64AF-0-GCSI-T?
All RM24C64AF-0-GCSI-T units undergo pre-shipment inspection (PSI). If there is an issue with RM24C64AF-0-GCSI-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 RM24C64AF-0-GCSI-T part is unused and in its original packaging.
Return procedure for RM24C64AF-0-GCSI-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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