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Microchip Technology AT24C64BN-10SU-1.8
- Part No.:
- AT24C64BN-10SU-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C64BN-10SU-1.8.pdf
- Description:
- IC EEPROM 64KBIT I2C 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,222
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Product details
Overview
AT24C64BN-10SU-1.8 from Microchip Technology (formerly Atmel) is a 64Kbit I²C-compatible serial EEPROM with 1.8V to 5.5V supply operation, organized as 8192 × 8 bits, featuring hardware write protection via WP pin and 32-byte page write capability for embedded configuration storage in industrial controllers and IoT edge nodes.
For engineers reviewing the AT24C64BN-10SU-1.8 datasheet, AT24C64BN-10SU-1.8 pinout, AT24C64BN-10SU-1.8 application, or AT24C64BN-10SU-1.8 equivalent, key selection criteria include low-voltage compatibility (1.8V min), 400kHz I²C clock rate, 1,000,000 write endurance, 100-year data retention, and JEDEC SOIC-8 packaging with green RoHS compliance.
Technical Context
The AT24C64BN-10SU-1.8 implements a true 2-wire I²C interface with Schmitt-triggered, noise-filtered SCL/SDA inputs and open-drain bidirectional SDA. It supports cascaded bus topology with up to eight devices using A0–A2 address pins and features internal address counter roll-over during sequential reads.
Its memory architecture comprises 256 pages of 32 bytes each, enabling partial-page writes without erasing adjacent data. Write cycles are self-timed (≤5ms), and standby current is specified at 1.0μA at 1.8V - critical for battery-backed systems requiring ultra-low quiescent power.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 64Kbit (8192 × 8), sufficient for firmware calibration tables or device-specific configuration parameters |
| Supply Voltage Range | 1.8V to 5.5V - enables direct interfacing with 1.8V logic domains and mixed-voltage systems without level shifters |
| I²C Clock Rate | 400kHz - supports fast parameter loading in real-time control loops without bus contention delays |
| Write Endurance | 1,000,000 cycles - ensures reliable logging in industrial data recorders with daily write events over 27 years |
| Data Retention | 100 years at +25°C - guarantees long-term integrity of stored calibration coefficients or security keys |
| Standby Current | 1.0μA at 1.8V - extends battery life in always-on sensor nodes where EEPROM remains powered between wake cycles |
| Page Write Size | 32 bytes - allows efficient bulk updates of related configuration fields (e.g., ADC gain/offset sets) in single transaction |
Pinout & Package
AT24C64BN-10SU-1.8 is housed in an 8-lead JEDEC SOIC package (0.150" wide body, 8S1), with standard pin spacing (1.27mm pitch) and gull-wing leads compatible with automated PCB assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A2 | Device Address Inputs | Hardwired or floating (internally pulled down); enable up to eight devices on one I²C bus - essential for multi-sensor modules |
| GND | Ground Reference | Common return path for VCC, SCL, SDA, and WP; requires low-impedance connection to minimize noise coupling into I²C lines |
| SCL | Serial Clock Input | Positive-edge clocked input with Schmitt trigger and noise filtering - rejects <100ns glitches per AC spec tI = 100ns |
| SDA | Serial Data I/O | Open-drain bidirectional line; must be externally pulled up; supports wire-OR with other I²C peripherals on same bus |
| WP | Hardware Write Protect | Active-high signal inhibiting writes to upper 16Kb when tied to VCC - prevents accidental corruption of critical boot parameters |
| VCC | Power Supply | Accepts 1.8–5.5V; decoupling capacitor (0.1μF) required within 10mm to suppress switching noise during write cycles |
Key Features
| Feature | Design Value |
|---|---|
| 1.8V Operation Support | Enables direct integration with ultra-low-power microcontrollers (e.g., ARM Cortex-M0+ in sleep mode) without voltage translation |
| 32-Byte Page Write Mode | Reduces I²C transaction overhead by 31× vs. byte-write for contiguous data blocks - cuts firmware update time in half |
| Hardware Write Protection (WP) | Physically isolates upper 16Kb memory quadrant from software errors - critical for storing immutable device identity or cryptographic keys |
| Schmitt Trigger Inputs | Eliminates need for external RC filters on SCL/SDA lines in electrically noisy industrial enclosures (e.g., motor drives) |
| 100-Year Data Retention | Validated at +25°C; ensures calibration data survives product lifetime without refresh - reduces field service costs for medical instruments |
Applications
| Industrial PLC Configuration Storage | Smart Meter Firmware Parameter Tables |
|---|---|
Use Scenario: Storing calibrated sensor offsets, PID loop gains, and communication settings in programmable logic controllers deployed in factory automation cabinets. IC Role / Device Role / Timing Role: Nonvolatile configuration register bank accessed via I²C during controller boot and runtime reconfiguration. Use Value: Enables field-upgradable tuning without firmware reflashing; 1.8V operation allows direct interface with low-power FPGA configuration managers. | Use Scenario: Holding tariff schedules, metering constants, and tamper-detection thresholds in ANSI C12.22-compliant electricity meters operating on lithium-thionyl chloride batteries. IC Role / Device Role / Timing Role: Secure, long-life parameter vault with hardware write lock preventing unauthorized utility parameter changes. Use Value: 1.0μA standby current extends 10-year battery life; 100-year retention ensures accuracy across full product lifecycle. |
| IoT Edge Node Device Identity | Medical Diagnostic Equipment Calibration Data |
Use Scenario: Storing unique MAC addresses, TLS certificate fingerprints, and BLE advertising payloads in battery-powered environmental sensors. IC Role / Device Role / Timing Role: Persistent identity store accessed once per boot via I²C before wireless stack initialization. Use Value: Page-write capability allows atomic update of all identity fields; 400kHz clock supports rapid provisioning in high-volume manufacturing test. | Use Scenario: Archiving photodiode gain coefficients, temperature compensation curves, and FDA-mandated audit logs in portable ultrasound transducers. IC Role / Device Role / Timing Role: Regulated data vault with write-protection enforced during clinical use to prevent accidental calibration overwrite. Use Value: Hardware WP pin tied to system security controller ensures only authorized service tools can modify calibration - meets IEC 62304 traceability requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Microchip AT24C64D-SSHM-T | Same 64Kbit density and 1.7–5.5V range; uses newer AT24C64D die with enhanced ESD rating (4kV HBM) and tighter tWR max (5ms vs. 10ms in legacy versions) | Preferred for new designs requiring higher robustness in handling-sensitive environments (e.g., handheld medical devices) | Select AT24C64D-SSHM-T if board layout allows TSSOP-8 and ESD immunity >4kV is mandated |
| ON Semiconductor CAT24C64WI-GT3 | Identical 64Kbit/8192×8 organization and 1.7–5.5V range; supports 1MHz I²C (vs. 400kHz), but has higher ISB = 3μA at 1.8V | Better suited for high-throughput data loggers needing faster parameter loads, but less optimal for multi-year battery life | Choose CAT24C64WI-GT3 only when 1MHz I²C bandwidth is required and standby current penalty is acceptable |
Compared with AT24C64BN-10SU-1.8, the AT24C64D-SSHM-T offers improved ESD tolerance and tighter write timing for next-gen designs, while the CAT24C64WI-GT3 trades lower power for higher speed - neither is pin-compatible without validation of WP/SCL/SDA timing margins in target system.
Availability
AT24C64BN-10SU-1.8 is available at Aetrix Electronics and suitable for industrial PLCs, smart meters, IoT edge nodes, and medical diagnostic equipment requiring stable component supply with guaranteed 100-year data retention and 1.8V low-voltage operation.
Supply support for AT24C64BN-10SU-1.8 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
Microchip Technology is a global semiconductor company specializing in microcontrollers, analog devices, and nonvolatile memory solutions, with a focus on reliability and long-term product support.
The AT24C64B series was designed for industrial and commercial applications demanding low-power, low-voltage serial EEPROM with hardware write protection and extended data retention - targeting embedded systems where firmware configurability and field upgradeability are critical.
FAQ
What is the minimum operating voltage for AT24C64BN-10SU-1.8?
The AT24C64BN-10SU-1.8 operates down to 1.8V, as confirmed by its ordering code suffix "-1.8" and DC characteristics table specifying VCC1 = 1.8V min. This allows direct interfacing with 1.8V I/O domains without level-shifting circuitry, reducing BOM cost and PCB area in space-constrained designs.
Does AT24C64BN-10SU-1.8 support standard I²C protocol?
Yes, AT24C64BN-10SU-1.8 implements a fully compliant 2-wire I²C interface with standard Start/Stop conditions, ACK/NACK handshaking, and 7-bit device addressing. Its SDA line is open-drain with internal pull-down biasing on floating address pins, ensuring interoperability with any I²C master including ARM, PIC, and ESP32 microcontrollers.
How many devices can share the same I²C bus with AT24C64BN-10SU-1.8?
Up to eight AT24C64BN-10SU-1.8 devices can share a single I²C bus using the A0, A1, and A2 address pins. Each pin can be hardwired to VCC or GND (or left floating, with internal pull-down), generating a unique 3-bit device address that combines with the fixed 1010 base to form a full 7-bit address - enabling compact multi-sensor node designs.
What is the purpose of the WP pin on AT24C64BN-10SU-1.8?
The WP (Write Protect) pin on AT24C64BN-10SU-1.8 provides hardware-level inhibition of write operations to the upper 16Kb memory quadrant when pulled high to VCC. This prevents accidental overwrites of critical calibration data or security keys during firmware updates, and is especially valuable in field-deployed equipment where software-only protection may be compromised.
Is AT24C64BN-10SU-1.8 RoHS compliant and lead-free?
Yes, AT24C64BN-10SU-1.8 is RoHS compliant and lead-free, as indicated by the "U" in its ordering code suffix "-10SU-1.8", which denotes green, halogen-free packaging per Microchip's documentation. The device uses matte tin lead finish and meets JEDEC J-STD-020 moisture sensitivity level 1 - suitable for standard reflow profiles without special handling.
AT24C64BN-10SU-1.8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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:
- 400 kHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 900 ns
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C64BN-10SU-1.8 FAQ
1.How can I place an order for AT24C64BN-10SU-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C64BN-10SU-1.8 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 AT24C64BN-10SU-1.8 reliable?
The price and inventory of AT24C64BN-10SU-1.8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C64BN-10SU-1.8 is usually 5 days.
3.What payment methods are accepted for AT24C64BN-10SU-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C64BN-10SU-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C64BN-10SU-1.8?
AT24C64BN-10SU-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C64BN-10SU-1.8 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 AT24C64BN-10SU-1.8?
For technical support, including AT24C64BN-10SU-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C64BN-10SU-1.8 requirements.
6.How does Aetrix verify that AT24C64BN-10SU-1.8 is sourced from the original manufacturer or authorized distributors?
All AT24C64BN-10SU-1.8 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 AT24C64BN-10SU-1.8 meets industry standards.
7.What is the process for return or replacement of AT24C64BN-10SU-1.8?
All AT24C64BN-10SU-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C64BN-10SU-1.8, 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 AT24C64BN-10SU-1.8 part is unused and in its original packaging.
Return procedure for AT24C64BN-10SU-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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