My Inquiry
My Account
Microchip Technology 24LC01BT-E/ST
- Part No.:
- 24LC01BT-E/ST
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
24LC01BT-E/ST.pdf
- Description:
- IC EEPROM 1KBIT I2C 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,512
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
24LC01BT-E/ST 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, 5 ms max page write time, and hardware write-protection via the WP pin. It supports industrial (–40°C to +85°C) and extended (–40°C to +125°C) temperature ranges in an 8-lead SOIC package and is used for configuration storage in embedded controllers and power management systems.
For engineers reviewing the 24LC01BT-E/ST datasheet, 24LC01BT-E/ST pinout, 24LC01BT-E/ST application, or 24LC01BT-E/ST equivalent, key selection criteria include VCC range compatibility (2.5–5.5V), I²C timing compliance at 400 kHz, WP-enabled hardware lock, 1 µA standby current, and extended-temperature qualification per AEC-Q100.
Technical Context
The 24LC01BT-E/ST implements a two-wire I²C interface with Schmitt-trigger inputs and slope-controlled outputs to suppress noise and eliminate ground bounce. Its internal architecture includes an 8-byte page write buffer, self-timed erase/write cycle, and address pointer logic supporting current-address, random, and sequential read modes.
It uses open-drain SDA/SCL with external pull-ups, requires no external clock source, and relies on host-generated Start/Stop conditions. Write protection is implemented via direct-level sensing on the WP pin-tied to VCC for full-array lock (00h–7Fh), VSS for normal operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1 Kbit (128 × 8-bit), sufficient for firmware revision IDs, calibration coefficients, or device configuration registers. |
| VCC Range | 2.5V to 5.5V - compatible with 3.3V and 5V logic domains without level shifting. |
| Max Clock Frequency | 400 kHz - supports standard-mode I²C timing; not rated for fast-mode (1 MHz) or low-voltage (<2.5V) operation. |
| Page Write Time | 5 ms maximum - defines minimum interval between successive page writes; impacts firmware update latency. |
| Write Endurance | 1 million cycles - ensures reliable field updates over product lifetime in telemetry or logging applications. |
| Data Retention | 200 years - guarantees nonvolatile storage integrity across decades without refresh. |
| Standby Current | 1 µA (I-temp), 5 µA (E-temp) - enables ultra-low-power operation in battery-backed systems. |
Pinout & Package
8-lead SOIC (Small Outline Integrated Circuit) package with 1.27 mm pitch, JEDEC MS-012AC compliant, body size 3.9 mm × 4.9 mm × 1.75 mm, gull-wing leads, RoHS-compliant matte tin finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Address Input | No internal connection; may be left floating or tied to VSS/VCC - does not affect device addressing. |
| A1 | Address Input | No internal connection; functionally unused - eliminates need for external termination resistors. |
| A2 | Address Input | No internal connection; reserved for family scalability - no impact on 24LC01BT-E/ST operation. |
| VSS | Ground | Reference node for all digital and analog circuitry; must be low-impedance connection to system GND plane. |
| SDA | Serial Data I/O | Open-drain bidirectional bus line requiring external pull-up (2 kΩ typical for 400 kHz); carries addresses, data, and ACK/NACK. |
| SCL | Serial Clock Input | Input-only clock line synchronized to host controller; edge-triggered; drives internal timing for read/write cycles. |
| WP | Write-Protect Control | Logic-level input: VSS enables full read/write access; VCC locks entire memory array (00h–7Fh) against accidental writes. |
| VCC | Power Supply | Primary supply rail (2.5–5.5V); powers EEPROM core, interface logic, and charge pump for write operations. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware Write-Protection | Physical WP pin enables irreversible lock of full memory array without software overhead or fuse programming. |
| 8-Byte Page Write Buffer | Reduces I²C transaction count during multi-byte writes - improves bus efficiency and lowers host CPU load. |
| Schmitt Trigger Inputs | Provides >50 mV hysteresis on SDA/SCL - rejects EMI-induced glitches in noisy industrial environments. |
| Self-Timed Erase/Write Cycle | Eliminates need for external timing control or polling delay estimation - simplifies firmware integration. |
| AEC-Q100 Qualified | Validated for automotive-grade reliability (Grade 1: –40°C to +125°C), including HTOL, TCT, and ESD testing. |
Applications
| Industrial Sensor Node | Automotive Body Controller |
|---|---|
Use Scenario: Storing calibrated sensor offsets and linearization coefficients in a wireless temperature/humidity node. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed during boot and recalibration routines via I²C. Use Value: Enables field-updatable calibration without firmware reflash; 1 µA standby current extends battery life beyond 10 years. | Use Scenario: Holding door lock actuator fault history and seat position presets in a Class B automotive module. IC Role / Device Role / Timing Role: AEC-Q100-qualified EEPROM storing safety-critical configuration and diagnostic logs. Use Value: WP pin prevents corruption during power brownouts; 200-year data retention meets OEM long-term warranty requirements. |
| Smart Power Supply | Medical Infusion Pump |
Use Scenario: Recording output voltage/current trim values and thermal derating thresholds in a programmable DC-DC module. IC Role / Device Role / Timing Role: Configuration store interfaced to MCU over 400 kHz I²C; updated only during factory calibration or service mode. Use Value: Hardware WP ensures settings remain intact during transient faults; 1M endurance supports >500 service cycles. | Use Scenario: Saving drug library metadata and user-defined dosage profiles in a battery-powered infusion device. IC Role / Device Role / Timing Role: Secure, tamper-resistant memory for regulatory-mandated audit trails and calibration records. Use Value: Extended temperature rating (–40°C to +125°C) accommodates sterilization cycles; RoHS compliance satisfies IEC 60601-1. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA01T-I/ST | Lower VCC min (1.7V), same 400 kHz speed, I-temp only (–40°C to +85°C), identical SOIC-8 footprint. | Not qualified for extended temperature or automotive use; suitable for cost-sensitive consumer electronics. | Select when 1.7V operation is required and extended temp/AEC-Q100 are unnecessary. |
| AT24C01D-SSHM-T | Same 1 Kbit density, 1.7–5.5V VCC, 1 MHz max clock, but lacks AEC-Q100 qualification and has higher 3 µA standby current. | Targeted at general-purpose industrial use; not validated for automotive mission-critical functions. | Choose for higher-speed I²C (1 MHz) where extended temp and automotive qualification are not mandated. |
Compared with 24AA01T-I/ST, the 24LC01BT-E/ST adds extended temperature support and AEC-Q100 qualification at the cost of 1.7V operation; versus AT24C01D-SSHM-T, it trades 1 MHz speed for automotive-grade reliability and lower standby current.
Availability
24LC01BT-E/ST is available at Aetrix Electronics and suitable for industrial sensor nodes, automotive body controllers, smart power supplies, and medical infusion pumps requiring stable component supply, extended-temperature performance, and AEC-Q100 compliance.
Supply support for 24LC01BT-E/ST 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 leading provider of microcontrollers, analog devices, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 24LC01B series was designed specifically for robust, low-power nonvolatile storage in automotive and industrial systems requiring extended temperature operation and hardware-based write protection.
FAQ
What is the maximum I²C clock frequency supported by the 24LC01BT-E/ST?
The 24LC01BT-E/ST supports a maximum I²C clock frequency of 400 kHz under all specified VCC conditions (2.5V–5.5V). It is not rated for fast-mode (1 MHz) operation - that capability is exclusive to the 24FC01 variant. This 400 kHz limit ensures timing margin compliance across the full extended temperature range (–40°C to +125°C).
Does the 24LC01BT-E/ST require external pull-up resistors on SDA and SCL lines?
Yes, the 24LC01BT-E/ST requires external pull-up resistors on both SDA and SCL lines because these pins are open-drain. For 400 kHz operation, a 2 kΩ resistor to VCC is recommended. The value must be selected based on bus capacitance and rise-time requirements per I²C specification - failure to install pull-ups will prevent communication.
How does the WP pin function on the 24LC01BT-E/ST?
The WP (Write-Protect) pin on the 24LC01BT-E/ST is a logic-level input: tying it to VSS enables full read/write access to the entire 128-byte memory array (addresses 00h–7Fh); tying it to VCC disables all write operations while preserving read functionality. This hardware lock operates independently of I²C commands and provides fail-safe protection against firmware errors or voltage transients.
Is the 24LC01BT-E/ST pin-compatible with other 24XX01 family members in SOIC-8 packaging?
Yes, the 24LC01BT-E/ST is pin-compatible with all 24XX01 family variants (e.g., 24AA01, 24FC01) in the 8-lead SOIC package - same pinout, same footprint, same A0–A2 no-connect behavior. However, electrical differences (VCC range, max clock, temp grade) mean substitution requires validation of system-level timing, voltage, and qualification requirements.
What is the data retention period guaranteed for the 24LC01BT-E/ST?
The 24LC01BT-E/ST guarantees a minimum data retention period of 200 years under normal operating conditions (≤85°C ambient, ≤5.5V VCC). This specification is derived from accelerated life testing and applies to data stored in the EEPROM array after a completed write cycle - no periodic refresh is required.
24LC01BT-E/ST Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- 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:
- 3.5 µs
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
24LC01BT-E/ST FAQ
1.How can I place an order for 24LC01BT-E/ST through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC01BT-E/ST 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 24LC01BT-E/ST reliable?
The price and inventory of 24LC01BT-E/ST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC01BT-E/ST is usually 5 days.
3.What payment methods are accepted for 24LC01BT-E/ST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC01BT-E/ST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC01BT-E/ST?
24LC01BT-E/ST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC01BT-E/ST 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 24LC01BT-E/ST?
For technical support, including 24LC01BT-E/ST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC01BT-E/ST requirements.
6.How does Aetrix verify that 24LC01BT-E/ST is sourced from the original manufacturer or authorized distributors?
All 24LC01BT-E/ST 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 24LC01BT-E/ST meets industry standards.
7.What is the process for return or replacement of 24LC01BT-E/ST?
All 24LC01BT-E/ST units undergo pre-shipment inspection (PSI). If there is an issue with 24LC01BT-E/ST, 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 24LC01BT-E/ST part is unused and in its original packaging.
Return procedure for 24LC01BT-E/ST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24LC01BT-E/ST 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…
