My Inquiry
My Account
Microchip Technology 24LC01BHT-E/SN
- Part No.:
- 24LC01BHT-E/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
24LC01BHT-E/SN.pdf
- Description:
- IC EEPROM 1KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,320
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
24LC01BHT-E/SN from Microchip Technology Inc. is a 1 Kbit I²C-compatible serial EEPROM organized as 128 × 8-bit memory, operating from 2.5V to 5.5V with 400 kHz max clock frequency and industrial/automotive temperature range (–40°C to +125°C). It features hardware write-protect for half-array (40h–7Fh), 1 μA standby current, and 1 million erase/write cycles - deployed in embedded system configuration storage, sensor calibration data retention, and power-management parameter backup.
For engineers reviewing the 24LC01BHT-E/SN datasheet, 24LC01BHT-E/SN pinout, 24LC01BHT-E/SN application, or 24LC01BHT-E/SN equivalent, this page delivers verified electrical specs, package mapping to SOIC-8, I²C timing constraints at 2.5V–5.5V, WP pin behavior under VCC/VSS bias, and real-world use cases in automotive control modules and industrial PLCs.
Technical Context
The 24LC01BHT-E/SN implements a two-wire I²C interface with Schmitt-trigger inputs on SDA/SCL for noise immunity and slope-controlled outputs to suppress ground bounce. Its internal address counter supports current-address, random, and sequential read modes, while the 8-byte page buffer enables efficient page writes with automatic address increment within physical page boundaries (00h–07h, 08h–0Fh, etc.).
Write protection is implemented via the WP pin: tied to VCC, it disables writes to addresses 40h–7Fh while permitting full read access; tied to VSS, full read/write operation is enabled. The device includes an internal VCC threshold detector that disables erase/write logic below 1.5V to prevent data corruption during brown-out conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1 Kbit (128 × 8-bit), sufficient for firmware revision IDs, sensor offsets, or small configuration tables |
| VCC Operating Range | 2.5V to 5.5V - compatible with 3.3V and 5V systems without level-shifting |
| Max Clock Frequency | 400 kHz at VCC ≥ 2.5V; degrades to 100 kHz below 2.5V - defines maximum I²C bus throughput |
| Write Endurance | 1 million erase/write cycles - supports frequent recalibration or logging in field-deployed devices |
| Data Retention | 200 years at +25°C - ensures long-term reliability of stored calibration or security keys |
| Standby Current | 1 μA max (I-temp) - critical for battery-backed or energy-harvesting applications |
| Page Write Time | 3 ms typical - determines minimum delay between successive page writes |
Pinout & Package
24LC01BHT-E/SN is packaged in an 8-lead plastic SOIC (3.90 mm body), designated by the /SN suffix per Microchip's part numbering system. Pin 1 is A0 (NC), Pin 2 is A1 (NC), Pin 3 is A2 (NC), Pin 4 is VSS (ground reference), Pin 5 is SDA (bidirectional open-drain I²C data line requiring external pull-up), Pin 6 is SCL (input-only I²C clock), Pin 7 is WP (write-protect input), and Pin 8 is VCC (2.5–5.5V supply).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0, A1, A2 | No-connect (NC) | Internally unconnected; may be left floating or tied to VSS/VCC with no functional impact |
| VSS | Ground reference | Return path for all internal circuitry; must be low-impedance connection to system GND |
| SDA | Bidirectional I²C data line | Open-drain output; requires external pull-up resistor (2 kΩ for 400 kHz, 10 kΩ for 100 kHz) |
| SCL | I²C clock input | Master-generated synchronous clock; Schmitt-trigger input rejects noise spikes ≤50 ns |
| WP | Hardware write-protect control | High = protect addresses 40h–7Fh; Low = full read/write access; no effect on reads |
| VCC | Power supply | 2.5–5.5V operation; internal VCC detector disables writes below ~1.5V to prevent corruption |
Key Features
| Feature | Design Value |
|---|---|
| Half-array hardware write-protection | WP pin tied to VCC blocks writes to upper 512 bits (40h–7Fh) while allowing full read access - enables secure storage of factory defaults alongside user-modifiable parameters |
| Schmitt-trigger inputs with 50 ns spike suppression | SDA/SCL inputs reject noise transients up to 50 ns, eliminating need for external RC filtering in electrically noisy environments like automotive engine bays |
| Page write capability (up to 8 bytes) | Reduces I²C transaction overhead vs. byte writes - cuts bus time by ~75% when updating contiguous configuration registers |
| 1 μA max standby current (I-temp) | Enables multi-year operation on coin-cell batteries in maintenance-free IoT sensors or tamper-evident loggers |
| Pb-free and RoHS-compliant packaging | SOIC-8 (/SN) meets global environmental compliance requirements without derating or performance trade-offs |
Applications
| Automotive Body Control Module | Industrial PLC Configuration Storage |
|---|---|
Use Scenario: Storing door lock actuator calibration values, mirror position presets, and lighting profile settings across vehicle lifecycle. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding persistent user preferences and factory-set thresholds. Use Value: Enables recall of personalized settings after battery disconnect; WP pin protects factory calibration (40h–7Fh) from accidental overwrites during service mode. |
Use Scenario: Retaining I/O mapping tables, communication protocol parameters, and alarm thresholds in programmable logic controllers deployed in factory automation lines. IC Role / Device Role / Timing Role: System-level configuration EEPROM accessed during boot to initialize FPGA or MCU peripherals. Use Value: Ensures deterministic startup behavior after power loss; 200-year data retention eliminates scheduled EEPROM replacement in sealed enclosures. |
| Medical Sensor Calibration Data | Smart Energy Meter Firmware Metadata |
Use Scenario: Holding temperature-compensated offset/gain coefficients for analog front-end sensors in portable diagnostic devices. IC Role / Device Role / Timing Role: Precision calibration data store accessed once per sensor initialization cycle. Use Value: 1 million endurance cycles support daily recalibration routines over 10+ years; 1 μA standby current extends battery life in handheld units. |
Use Scenario: Storing firmware version ID, cryptographic key identifiers, and tariff schedule timestamps in ANSI C12.22-compliant electricity meters. IC Role / Device Role / Timing Role: Secure metadata repository updated only during firmware upgrades or utility-initiated reconfiguration. Use Value: Hardware WP protection prevents unauthorized modification of billing-critical fields; 400 kHz I²C allows fast metadata reads during meter wake-up events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C01D-SSHM-T (Microchip) | Same 1 Kbit size, 1.7–5.5V VCC range, but supports 1 MHz I²C; no WP pin - write protection implemented via software lock bits | Lacks hardware WP; requires firmware coordination for dual-zone protection; better suited for designs needing higher-speed updates | Select if 1 MHz I²C bandwidth is required and WP functionality can be managed in software. |
| ST24C01-WDT6-TR (STMicroelectronics) | 1 Kbit, 1.8–5.5V, 400 kHz I²C, integrated WP pin, but only rated for –40°C to +85°C (I-temp); no automotive grade option | Not qualified for automotive E-temp (–40°C to +125°C); lacks 200-year retention spec - rated for 40 years | Choose for cost-sensitive industrial applications where extended temperature and retention are not mandatory. |
Compared with 24LC01BHT-E/SN, AT24C01D-SSHM-T offers higher speed but removes hardware write protection, while ST24C01-WDT6-TR provides identical pinout and WP function but lacks automotive qualification and long-term data retention - making 24LC01BHT-E/SN the only choice for safety-critical automotive or infrastructure deployments requiring guaranteed 125°C operation and 200-year data integrity.
Availability
24LC01BHT-E/SN is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC configuration storage, and medical sensor calibration data retention requiring stable component supply across extended product lifecycles.
Supply support for 24LC01BHT-E/SN 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 Inc. is a U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and nonvolatile memory solutions for embedded control applications.
The 24LC01BHT-E/SN belongs to Microchip's legacy 24LCxx serial EEPROM product line, designed specifically for reliable, low-power, I²C-based configuration and calibration data storage in automotive, industrial, and medical systems demanding extended temperature operation and long-term data integrity.
FAQ
What is the VCC operating voltage range for the 24LC01BHT-E/SN?
The 24LC01BHT-E/SN operates from 2.5V to 5.5V. Below 2.5V, its maximum I²C clock frequency drops to 100 kHz; operation below 2.5V is not supported. The device includes an internal VCC threshold detector that disables write operations when supply voltage falls below approximately 1.5V to prevent data corruption during brown-out conditions. This ensures robust behavior in automotive and industrial power environments where voltage transients occur.
How does the WP pin function on the 24LC01BHT-E/SN?
On the 24LC01BHT-E/SN, the WP (Write-Protect) pin enables hardware-level protection of the upper half of memory (addresses 40h–7Fh). When WP is tied to VCC, writes to that 512-bit block are inhibited while reads remain fully functional. When WP is tied to VSS (or left floating, though not recommended), full read/write access to all 128 bytes is enabled. This dual-zone architecture allows separation of factory-programmed calibration data from user-modifiable runtime parameters without software overhead.
What is the maximum I²C clock frequency supported by the 24LC01BHT-E/SN?
The 24LC01BHT-E/SN supports up to 400 kHz I²C clock frequency when VCC is 2.5V or higher. At VCC < 2.5V, the maximum clock rate is reduced to 100 kHz. These limits are defined by AC timing parameters including THIGH, TLOW, and TSU:DAT, which scale with supply voltage. The device remains fully compliant with standard-mode (100 kHz) and fast-mode (400 kHz) I²C specifications, enabling interoperability with common microcontroller I²C peripherals without custom timing adjustments.
Does the 24LC01BHT-E/SN support page writes, and what is the page size?
Yes, the 24LC01BHT-E/SN supports page writes of up to 8 bytes per operation. Its internal page buffer is 8 bytes wide, and physical page boundaries align to 8-byte intervals (e.g., 00h–07h, 08h–0Fh). Attempting a page write that crosses a boundary causes wraparound within the current page rather than spanning pages. This behavior requires firmware to validate address alignment before initiating multi-byte writes - a constraint confirmed in Figure 5-2 and Section 5.2 of the DS22104A datasheet.
What temperature ranges are supported by the 24LC01BHT-E/SN?
The 24LC01BHT-E/SN is qualified for both Industrial (I) and Automotive (E) temperature ranges: –40°C to +85°C and –40°C to +125°C respectively. The "E" in the part number denotes the extended automotive grade, validated per AEC-Q100 stress test requirements. This dual qualification makes the 24LC01BHT-E/SN suitable for under-hood automotive applications, industrial motor drives, and other environments where sustained high-temperature operation is required without derating.
24LC01BHT-E/SN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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:
- 400 kHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 900 ns
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
24LC01BHT-E/SN FAQ
1.How can I place an order for 24LC01BHT-E/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC01BHT-E/SN 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 24LC01BHT-E/SN reliable?
The price and inventory of 24LC01BHT-E/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC01BHT-E/SN is usually 5 days.
3.What payment methods are accepted for 24LC01BHT-E/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC01BHT-E/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC01BHT-E/SN?
24LC01BHT-E/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC01BHT-E/SN 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 24LC01BHT-E/SN?
For technical support, including 24LC01BHT-E/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC01BHT-E/SN requirements.
6.How does Aetrix verify that 24LC01BHT-E/SN is sourced from the original manufacturer or authorized distributors?
All 24LC01BHT-E/SN 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 24LC01BHT-E/SN meets industry standards.
7.What is the process for return or replacement of 24LC01BHT-E/SN?
All 24LC01BHT-E/SN units undergo pre-shipment inspection (PSI). If there is an issue with 24LC01BHT-E/SN, 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 24LC01BHT-E/SN part is unused and in its original packaging.
Return procedure for 24LC01BHT-E/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24LC01BHT-E/SN 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…
