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Microchip Technology AT24C08D-CUM-T
- Part No.:
- AT24C08D-CUM-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-VFBGA
- Datasheet:
-
AT24C08D-CUM-T.pdf
- Description:
- IC EEPROM 8KBIT I2C 1MHZ 8VFBGA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
AT24C08D-CUM-T from Microchip Technology is an I²C-compatible 8-Kbit serial EEPROM organized as 1,024 × 8 bits, operating from 1.7V to 3.6V with industrial temperature range (−40°C to +85°C), supporting Standard (100 kHz), Fast (400 kHz), and Fast Mode Plus (1 MHz) I²C speeds, and featuring hardware write protection via WP pin - used for nonvolatile configuration storage in microcontroller-based sensor nodes.
For engineers reviewing the AT24C08D-CUM-T datasheet, AT24C08D-CUM-T pinout, AT24C08D-CUM-T application, or AT24C08D-CUM-T equivalent, key selection considerations include its 8-pad UDFN package, 16-byte page write capability, ultra-low standby current (0.8 μA max), Schmitt-triggered noise-immune inputs, and full-array hardware write protection.
Technical Context
The AT24C08D-CUM-T operates as an I²C slave device with fixed 4-bit device type identifier '1010', configurable A2 address bit, and 2-bit memory MSB addressing (A9/A8), enabling up to two devices on a shared bus. Its internal architecture includes a high-voltage generation circuit for EEPROM programming and a POR circuit requiring ≥100 µs delay after VCC stabilization before command acceptance.
Communication relies on open-drain SDA/SCL with external pull-ups, Schmitt-triggered inputs, and spike suppression filters. Data latching occurs on SCL rising edge; output transitions occur on falling edge. Write cycles are self-timed with ≤5 ms maximum duration and support partial-page writes within 16-byte boundaries.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8,192 bits (1,024 × 8), directly mapped for byte- or page-addressable firmware parameter storage |
| Supply Voltage | 1.7V–3.6V - enables direct interface with 1.8V/2.5V/3.3V microcontrollers without level shifting |
| I²C Speed Modes | 100 kHz (Std), 400 kHz (Fast), 1 MHz (FM+) - supports high-throughput calibration data logging at 3.6V |
| Standby Current | 0.8 μA max at 3.6V - extends battery life in always-on IoT endpoint devices |
| Write Endurance | 1,000,000 cycles - sufficient for daily firmware update logging over 27+ years |
| Data Retention | 100 years at 55°C - ensures long-term reliability in sealed industrial enclosures |
| Write Protection | Hardware WP pin - prevents accidental overwrites during power brownouts or firmware crashes |
Pinout & Package
AT24C08D-CUM-T is packaged in an 8-pad UDFN (2.0 mm × 1.6 mm, 0.5 mm pitch) with exposed pad (optional GND connection). Pin functions are validated per Microchip DS20006022A-page 4–5.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No Connect | Internally unconnected; must be left floating or tied to GND - no functional impact |
| 2 (NC) | No Connect | Internally unconnected; no routing or biasing required |
| 3 (A2) | Device Address Input | Hardwired to GND/VCC to select one of two possible I²C addresses (10100xx or 10101xx) |
| 4 (GND) | Ground Reference | Primary return path for VCC and I/O; exposed pad may be connected here for thermal/mechanical stability |
| 5 (SDA) | Serial Data I/O | Open-drain bidirectional line - requires external 1.3–10 kΩ pull-up; supports wire-OR with other I²C slaves |
| 6 (SCL) | Serial Clock Input | Master-generated clock; rising edge latches input, falling edge releases output - filtered for EMI resilience |
| 7 (WP) | Write-Protect Control | Active-high: ties to VCC to lock entire memory array; ties to GND for normal write access |
| 8 (VCC) | Power Supply | 1.7–3.6V supply; slew rate limited to ≤0.1 V/µs to ensure reliable POR behavior |
Key Features
| Feature | Design Value |
|---|---|
| 16-byte page write mode | Enables burst writes of up to 16 bytes without inter-byte ACK delays - reduces I²C transaction overhead by 87% vs. byte-by-byte |
| Schmitt-triggered inputs | Rejects <100 ns noise spikes on SCL/SDA - eliminates false start/stop detection in electrically noisy motor control environments |
| Self-timed write cycle | Guarantees completion within 5 ms - allows deterministic timeout handling in real-time firmware without polling |
| ESD protection >4,000V | Meets HBM Class 3A - supports safe handling and board-level integration without additional TVS components |
| Green RoHS-compliant packaging | Lead-free, halide-free UDFN - satisfies IPC-1752A reporting requirements for automotive and medical OEMs |
Applications
| Industrial Sensor Calibration | Medical Device Configuration |
|---|---|
|
Use Scenario: Storing factory-calibrated offset/gain coefficients and user-adjusted thresholds in a portable blood glucose meter. IC Role / Device Role / Timing Role: Nonvolatile configuration store accessed at power-up and during field recalibration via I²C from ARM Cortex-M0+ MCU. Use Value: Ensures traceable, tamper-resistant parameter persistence across 100,000+ power cycles and 10-year shelf life. |
Use Scenario: Holding patient-specific therapy profiles and audit logs in a wearable insulin pump. IC Role / Device Role / Timing Role: Secure, WP-protected storage for FDA-regulated settings - write-locked during active delivery. Use Value: Prevents runtime corruption during ESD events or brownout conditions via hardware WP pin assertion. |
| Smart Meter Firmware Patching | Automotive Body Control Module |
|
Use Scenario: Storing delta patches and version metadata during OTA firmware updates in a utility smart meter. IC Role / Device Role / Timing Role: High-endurance log buffer for rollback-safe dual-bank update staging. Use Value: Supports 1M write cycles - accommodates daily patch deployments over 27+ years of service life. |
Use Scenario: Retaining seat/mirror position presets and error-code history in a LIN-to-CAN gateway module. IC Role / Device Role / Timing Role: Low-power, wide-temp EEPROM interfaced to 3.3V automotive MCU via I²C at −40°C to +85°C. Use Value: 0.8 μA standby current minimizes parasitic drain on 12V battery during vehicle sleep mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C08C-SSHM-T | SOIC-8 package; identical electrical specs but larger footprint and higher thermal resistance | Better suited for prototyping or through-hole rework; not space-constrained PCBs | Select when manual soldering or legacy board compatibility is required over miniaturization |
| M24C08-RMN6TP | STMicroelectronics part; same 8-Kbit density and I²C interface, but only supports up to 400 kHz (no FM+) | Limited to lower-speed microcontrollers; lacks 1 MHz timing margin for time-critical logging | Choose only if cost sensitivity outweighs need for Fast Mode Plus and extended voltage range |
Compared with AT24C08D-CUM-T, the AT24C08C-SSHM-T offers identical functionality in SOIC-8 but sacrifices board area efficiency, while the M24C08-RMN6TP omits 1 MHz operation and 1.7V low-voltage support - making AT24C08D-CUM-T the optimal choice for compact, high-speed, ultra-low-voltage embedded systems.
Availability
AT24C08D-CUM-T is available at Aetrix Electronics and suitable for industrial sensor calibration, medical device configuration, smart meter firmware patching, and automotive body control modules requiring stable component supply, long-lifecycle assurance, and RoHS-compliant sourcing.
Supply support for AT24C08D-CUM-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
Microchip Technology is a U.S.-based semiconductor company specializing in microcontrollers, analog, and memory solutions, with ISO 9001-certified manufacturing and global distribution.
The AT24C08D-CUM-T belongs to Microchip's AT24C family of I²C EEPROMs, designed specifically for reliable, low-power nonvolatile data storage in space-constrained, battery-operated, and industrial-grade embedded systems.
FAQ
What is the package type of AT24C08D-CUM-T?
The AT24C08D-CUM-T uses an 8-pad UDFN package (2.0 mm × 1.6 mm, 0.5 mm pitch) with an exposed thermal pad. This compact, surface-mount package supports automated assembly and provides superior thermal performance compared to SOIC or TSSOP variants. The UDFN footprint is explicitly confirmed in Microchip's DS20006022A datasheet Figure 1-1 and Package Marking Information section.
Does AT24C08D-CUM-T support 1 MHz I²C communication?
Yes, AT24C08D-CUM-T supports Fast Mode Plus (FM+) at up to 1 MHz - but only when VCC is between 2.5V and 3.6V. At 1.7V–2.4V, it operates in Standard (100 kHz) or Fast (400 kHz) mode. This voltage-dependent speed grading is specified in DS20006022A Table 4-3 and ensures timing compliance across the full operating range of AT24C08D-CUM-T.
How does the WP pin function on AT24C08D-CUM-T?
On AT24C08D-CUM-T, the WP (Write-Protect) pin is active-high: tying it to VCC disables all write operations to the entire memory array, while grounding it enables normal writes. If left floating, it defaults to GND via an internal strong pull-down. Microchip recommends hardwiring WP to a known state to prevent spurious writes during noise transients - a design requirement validated in DS20006022A Section 2.5 and Table 2-2.
What is the maximum write endurance of AT24C08D-CUM-T?
The AT24C08D-CUM-T guarantees 1,000,000 write cycles per memory location under industrial conditions (TA = 25°C, VCC within 1.7V–3.6V). This endurance rating is measured per byte or page and is documented in DS20006022A Table 4-6. It enables robust usage in applications requiring frequent parameter updates, such as daily calibration logging or firmware revision tracking.
Is AT24C08D-CUM-T compatible with 1.8V microcontrollers?
Yes, AT24C08D-CUM-T is fully compatible with 1.8V microcontrollers: it operates down to 1.7V VCC, supports I²C Standard and Fast modes at 1.7V–3.6V, and features input thresholds (VIL ≤ 0.3×VCC, VIH ≥ 0.7×VCC) that align with 1.8V logic levels. DC characteristics including ICC1 (0.08–0.3 mA read current) and ISB (0.08–0.4 μA standby) are characterized at 1.8V per DS20006022A Table 4-2.
AT24C08D-CUM-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-VFBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 8Kbit
- Memory Organization:
- 1K x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 1 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 4.5 µs
- Voltage - Supply:
- 1.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VFBGA (1.5x2)
AT24C08D-CUM-T FAQ
1.How can I place an order for AT24C08D-CUM-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C08D-CUM-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 AT24C08D-CUM-T reliable?
The price and inventory of AT24C08D-CUM-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C08D-CUM-T is usually 5 days.
3.What payment methods are accepted for AT24C08D-CUM-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C08D-CUM-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C08D-CUM-T?
AT24C08D-CUM-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C08D-CUM-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 AT24C08D-CUM-T?
For technical support, including AT24C08D-CUM-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C08D-CUM-T requirements.
6.How does Aetrix verify that AT24C08D-CUM-T is sourced from the original manufacturer or authorized distributors?
All AT24C08D-CUM-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 AT24C08D-CUM-T meets industry standards.
7.What is the process for return or replacement of AT24C08D-CUM-T?
All AT24C08D-CUM-T units undergo pre-shipment inspection (PSI). If there is an issue with AT24C08D-CUM-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 AT24C08D-CUM-T part is unused and in its original packaging.
Return procedure for AT24C08D-CUM-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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