My Inquiry
My Account
Microchip Technology AT24C01C-STPD-TVAO
- Part No.:
- AT24C01C-STPD-TVAO
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
AT24C01C-STPD-TVAO.pdf
- Description:
- IC EEPROM 1KBIT I2C TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,103
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT24C01C-STPD-TVAO from Microchip Technology (formerly Atmel) is a 1-kilobit (128 × 8) automotive-grade serial EEPROM with I²C-compatible 2-wire interface, operating from 2.5V to 5.5V over −40°C to +125°C (Grade 1), featuring hardware write protection via WP pin, 8-byte page write capability, and 1,000,000 write cycles endurance. It is used for parameter storage in engine control units, airbag modules, and body control modules.
For engineers reviewing the AT24C01C-STPD-TVAO datasheet, AT24C01C-STPD-TVAO pinout, AT24C01C-STPD-TVAO application, or AT24C01C-STPD-TVAO equivalent, key selection criteria include Grade 1 automotive qualification, SOIC-8 packaging, 400 kHz I²C speed at 2.5V, Schmitt-trigger inputs for noise immunity, and hardware write protection functionality.
Technical Context
The AT24C01C-STPD-TVAO implements a standard I²C protocol with start/stop condition detection, acknowledge polling, and bidirectional SDA communication using open-drain logic. Its internal architecture includes a 7-bit word address counter, page-addressed EEPROM array, and high-voltage pump for write operations.
It supports byte and page write modes (8-byte pages), current/random/sequential read modes, and features a self-timed write cycle (≤5 ms). The device uses hardwired A0–A2 pins for slave addressing (up to eight devices on one bus) and includes a dedicated Write Protect (WP) pin that disables all writes when pulled high.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1,024 bits (128 words × 8 bits), organized as 16 pages of 8 bytes each - enables compact configuration storage without external address latching. |
| Interface | I²C-compatible 2-wire serial interface - reduces PCB routing complexity and pin count versus parallel EEPROMs. |
| Supply Voltage | 2.5V to 5.5V (Grade 1) - compatible with 3.3V and 5V automotive microcontroller I/O domains without level shifting. |
| Operating Temperature | −40°C to +125°C - qualified per AEC-Q100 Grade 1 for under-hood and powertrain applications. |
| Write Endurance | 1,000,000 write cycles - supports frequent calibration or fault-log updates over full vehicle lifetime. |
| Data Retention | 100 years at +25°C - ensures long-term reliability of stored safety-critical parameters without refresh. |
| Max Clock Frequency | 400 kHz at VCC = 2.5V - meets standard I²C Fast-mode timing for real-time firmware access in ECUs. |
Pinout & Package
AT24C01C-STPD-TVAO is supplied in an 8-lead JEDEC SOIC package (package code "SS", drawing 8S1), measuring 4.9 mm × 6.0 mm × 1.75 mm, with gull-wing leads and NiPdAu lead finish (lead-free/halogen-free).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | Hardwired LSB of 3-bit device address; enables up to eight AT24C01C-STPD-TVAO devices on same I²C bus. |
| A1 | Device Address Input | Mid-bit of 3-bit device address; used with A0 and A2 for unique slave addressing in multi-device systems. |
| A2 | Device Address Input | MSB of 3-bit device address; completes 3-bit address field (1010 A2 A1 A0 R/W) per I²C specification. |
| GND | Ground Reference | Primary return path for VCC and signal currents; must be low-impedance to support noise-immune I²C signaling. |
| VCC | Power Supply | Single 2.5–5.5V supply input; powers internal logic, EEPROM array, and high-voltage pump for write operations. |
| WP | Write Protect Control | Active-high hardware lock: tied to VCC to disable all writes, preventing accidental or malicious firmware corruption. |
| SCL | Serial Clock Input | Positive-edge clock for data-in, negative-edge clock for data-out; requires external pull-up resistor per I²C bus rules. |
| SDA | Serial Data I/O | Open-drain bidirectional line; shared across multiple I²C devices; requires external pull-up and supports wire-OR logic. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | Enables robust operation in noisy automotive environments by rejecting sub-threshold voltage transients on SCL/SDA lines. |
| Hardware write protection | WP pin provides fail-safe, non-software-dependent prevention of unintended writes during ECU reset or brownout conditions. |
| Page write mode (8-byte) | Reduces I²C transaction overhead by writing up to 8 bytes per stop condition - cuts firmware execution time vs. byte-by-byte writes. |
| Self-timed write cycle (≤5 ms) | Eliminates need for host MCU to poll status or manage variable write latency - simplifies driver implementation. |
| AEC-Q100 Grade 1 qualification | Validated for continuous operation at 125°C ambient - suitable for placement near powertrain electronics without derating. |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance System (ADAS) Camera Module |
|---|---|
Use Scenario: Storing adaptive fuel trim values, misfire counters, and diagnostic trouble codes (DTCs) that persist across ignition cycles. IC Role / Device Role / Timing Role: Nonvolatile configuration and event logging memory interfaced directly to the ECU's microcontroller via I²C. Use Value: Enables regulatory-compliant OBD-II compliance and long-term engine performance optimization without battery-backed SRAM. | Use Scenario: Retaining lens calibration offsets, exposure settings, and firmware update staging flags in automotive vision systems. IC Role / Device Role / Timing Role: Parameter storage peripheral supporting fast, deterministic I²C reads during camera boot and runtime reconfiguration. Use Value: Ensures consistent image quality across power cycles and supports secure OTA update rollback via verified checksum storage. |
| Seat Occupancy Detection System | Electric Power Steering (EPS) Control Module |
Use Scenario: Saving seat position profiles, weight-sensor calibration coefficients, and occupant classification history for airbag deployment logic. IC Role / Device Role / Timing Role: Safety-critical data logger with hardware write protection to prevent tampering with restraint system parameters. Use Value: Meets ISO 26262 ASIL-B requirements for data integrity through WP pin enforcement and 100-year retention. | Use Scenario: Storing motor phase alignment data, torque sensor zero-point offsets, and fault log timestamps in EPS ECUs. IC Role / Device Role / Timing Role: High-reliability EEPROM accessed during EPS initialization and periodic self-test sequences. Use Value: Guarantees precise steering assist response by preserving factory-calibrated parameters across 15+ year vehicle service life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STMicroelectronics M24C01-RMN6TP | Same 1K density, SOIC-8, I²C interface, but rated −40°C to +85°C (Industrial Grade); no AEC-Q100 qualification. | Not approved for under-hood or safety-critical automotive use; limited to infotainment or gateway modules. | Select only if operating temperature stays ≤85°C and AEC-Q100 is not required. |
| ON Semiconductor CAT24C01HU4IGT3 | 1K I²C EEPROM in 8-pin UDFN (2×3 mm); same Grade 1 temp range but different footprint and no WP pin. | Requires PCB redesign for UDFN layout; lacks hardware write protection - firmware-only locking needed. | Choose for space-constrained designs where board area is critical and WP functionality can be implemented in software. |
Compared with M24C01-RMN6TP and CAT24C01HU4IGT3, AT24C01C-STPD-TVAO uniquely combines AEC-Q100 Grade 1 qualification, SOIC-8 compatibility, and dedicated WP pin - making it the only drop-in solution for production automotive ECUs requiring certified hardware-level write security.
Availability
AT24C01C-STPD-TVAO is available at Aetrix Electronics and suitable for engine control units, airbag controllers, and body control modules requiring stable component supply across extended automotive lifecycles.
Supply support for AT24C01C-STPD-TVAO 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 acquired Atmel in 2016 and maintains its automotive EEPROM product lines with full backward compatibility and long-term manufacturing commitment.
The AT24CxxC family was designed specifically for automotive subsystems needing reliable, low-power, I²C-based nonvolatile storage under harsh thermal and electrical conditions - emphasizing AEC-Q100 compliance, write endurance, and hardware data protection.
FAQ
What is the maximum I²C clock frequency supported by AT24C01C-STPD-TVAO at 3.3V?
The AT24C01C-STPD-TVAO supports up to 400 kHz I²C clock frequency at VCC = 2.5V, and this rating holds across its full 2.5V–5.5V operating range including 3.3V. This Fast-mode speed enables efficient parameter reads/writes in real-time automotive control loops without bus contention delays. The device meets tLOW ≥1200 ns and tHIGH ≥600 ns timing requirements at this rate.
Does AT24C01C-STPD-TVAO require external pull-up resistors on SDA and SCL lines?
Yes, AT24C01C-STPD-TVAO requires external pull-up resistors on both SDA and SCL lines because its I/O pins are open-drain. Typical values are 2.2 kΩ to 4.7 kΩ for 3.3V systems and 1.3 kΩ for 5V systems, selected based on bus capacitance and desired rise time. The internal Schmitt-trigger inputs ensure clean signal transitions even with RC-limited edges.
How does the Write Protect (WP) pin function on AT24C01C-STPD-TVAO?
When the WP pin is pulled high (to VCC), AT24C01C-STPD-TVAO disables all write operations - including byte, page, and sequential writes - while allowing unlimited reads. When WP is grounded, normal read/write functionality resumes. This hardware lock operates independently of firmware state, providing fail-safe protection against corruption during power faults or software crashes.
Is AT24C01C-STPD-TVAO pin-compatible with other members of the AT24CxxC family?
Yes, AT24C01C-STPD-TVAO shares identical pinout and package (SOIC-8) with AT24C02C-STPD-TVAO, AT24C04C-STPD-TVAO, and AT24C08C-STPD-TVAO. All use A0–A2 for device addressing and support the same I²C protocol, enabling hardware reuse across 1K–8K density variants in scalable ECU designs.
What is the endurance specification for AT24C01C-STPD-TVAO, and how is it validated?
AT24C01C-STPD-TVAO guarantees 1,000,000 write cycles per memory location at 5.0V and 25°C, tested per JEDEC standards using page-mode writes. This endurance is maintained across its full Grade 1 temperature range (−40°C to +125°C), with derating applied only for extreme thermal cycling - ensuring reliable operation in engine bay deployments over 15+ years.
AT24C01C-STPD-TVAO Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 1Kbit
- Memory Organization:
- 128 x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 1 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 900 ns
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
AT24C01C-STPD-TVAO FAQ
1.How can I place an order for AT24C01C-STPD-TVAO through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C01C-STPD-TVAO 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 AT24C01C-STPD-TVAO reliable?
The price and inventory of AT24C01C-STPD-TVAO are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C01C-STPD-TVAO is usually 5 days.
3.What payment methods are accepted for AT24C01C-STPD-TVAO?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C01C-STPD-TVAO transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C01C-STPD-TVAO?
AT24C01C-STPD-TVAO orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C01C-STPD-TVAO 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 AT24C01C-STPD-TVAO?
For technical support, including AT24C01C-STPD-TVAO datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C01C-STPD-TVAO requirements.
6.How does Aetrix verify that AT24C01C-STPD-TVAO is sourced from the original manufacturer or authorized distributors?
All AT24C01C-STPD-TVAO 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 AT24C01C-STPD-TVAO meets industry standards.
7.What is the process for return or replacement of AT24C01C-STPD-TVAO?
All AT24C01C-STPD-TVAO units undergo pre-shipment inspection (PSI). If there is an issue with AT24C01C-STPD-TVAO, 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 AT24C01C-STPD-TVAO part is unused and in its original packaging.
Return procedure for AT24C01C-STPD-TVAO:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT24C01C-STPD-TVAO Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
