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Microchip Technology 24LC16BH-E/ST
- Part No.:
- 24LC16BH-E/ST
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
24LC16BH-E/ST.pdf
- Description:
- IC EEPROM 16KBIT I2C 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,549
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Product details
Overview
24LC16BH-E/ST from Microchip Technology Inc. is a 16-Kbit I²C-compatible serial EEPROM organized as eight 256 × 8-bit blocks, operating from 2.5V to 5.5V with 400 kHz max clock frequency, 5 ms max page write time, and hardware write-protect for memory addresses 400h–7FFh. 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 nonvolatile parameter storage in embedded control systems.
For engineers reviewing the 24LC16BH-E/ST datasheet, 24LC16BH-E/ST pinout, 24LC16BH-E/ST application, or 24LC16BH-E/ST equivalent, key selection criteria include VCC range compatibility (2.5–5.5V), half-array write-protection via WP pin, 16-byte page buffer capability, I²C timing compliance at 400 kHz, and extended temperature qualification for automotive and industrial environments.
Technical Context
The 24LC16BH-E/ST implements a two-wire I²C slave interface with Schmitt-trigger inputs and slope-controlled outputs to suppress noise and eliminate ground bounce. Its internal architecture includes a 16-byte page latch, address pointer, and EEPROM array with self-timed erase/write cycles.
It uses a fixed 4-bit device identifier (1010b) plus 3 block-select bits (B2–B0) for addressing, enabling access to one of eight 256-word blocks. Write protection is controlled by the WP pin: tied to VSS enables full-array writes; tied to VCC protects addresses 400h–7FFh while allowing reads across the entire 16-Kbit space.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 × 8), organized as eight 256-word blocks for hierarchical addressing |
| Interface | I²C-compatible two-wire serial bus with 400 kHz max clock frequency at 2.5–5.5V |
| Write Cycle Time | ≤5 ms per byte or page - enables fast firmware parameter updates without blocking host MCU |
| Write Protection | Hardware-enabled half-array lock (400h–7FFh) via dedicated WP pin - prevents accidental overwrites of critical configuration data |
| Endurance & Retention | 1 million erase/write cycles and >200 years data retention - suitable for long-life industrial deployments |
| Supply Range | 2.5V to 5.5V - compatible with 3.3V and 5V logic domains without level-shifting |
| Temperature Range | –40°C to +125°C (Extended grade) - qualified for under-hood automotive and harsh-environment applications |
Pinout & Package
Package: 8-lead SOIC (SN), 3.90 mm body width, JEDEC MS-012 variant, RoHS-compliant matte tin finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSS | Ground reference | Common return path for all internal circuitry; must be connected to system GND |
| WP | Write-Protect input | Logic-high disables writes to upper half (400h–7FFh); logic-low enables full-array access |
| SCL | Serial Clock input | Asynchronous master-generated clock synchronizing all I²C transfers; requires external pull-up |
| SDA | Serial Data bidirectional I/O | Open-drain bus line for address/data transfer; requires external pull-up resistor (2 kΩ typical at 400 kHz) |
| VCC | Power supply | 2.5–5.5V DC input; decoupling capacitor (0.1 μF ceramic) recommended adjacent to pin |
| A0, A1, A2 | No-connect pins | Internally unconnected; may be left floating or tied to VSS/VCC with no functional impact |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | Input hysteresis ≥0.05×VCC eliminates false triggering from bus noise in electrically noisy environments |
| Output slope control | Controlled SDA/SCL edge rates prevent ground bounce and EMI during high-speed switching |
| Page write buffer | 16-byte on-chip latch allows burst writes within a single physical page - reduces I²C transaction overhead by 94% vs. byte writes |
| ESD protection | ≥4 kV HBM on all pins - enhances robustness during handling and board-level operation |
| AEC-Q100 qualification | Qualified per Automotive Electronics Council standard - validated for reliability in automotive subsystems |
Applications
| Automotive Body Control Module | Industrial PLC Configuration Storage |
|---|---|
Use Scenario: Storing calibration offsets, fault logs, and user-defined settings in vehicle door modules and lighting controllers. IC Role / Device Role / Timing Role: Nonvolatile parameter storage slave on I²C bus, accessed during power-up and runtime reconfiguration. Use Value: Extended temperature rating (–40°C to +125°C) and AEC-Q100 qualification ensure reliable operation in under-hood environments. | Use Scenario: Retaining I/O mapping tables, PID tuning parameters, and firmware update flags across power cycles in programmable logic controllers. IC Role / Device Role / Timing Role: I²C-configurable EEPROM providing deterministic read/write latency and page-buffered writes for rapid parameter updates. Use Value: Hardware write-protect (WP pin) prevents corruption of critical configuration data during brown-out or software faults. |
| Medical Infusion Pump Settings | Smart Energy Meter Calibration Data |
Use Scenario: Securing drug delivery profiles, dose limits, and operator audit trails in battery-powered portable medical devices. IC Role / Device Role / Timing Role: Low-power I²C EEPROM supporting 1 μA standby current and 1 mA active read current for extended battery life. Use Value: 200-year data retention and 1M-cycle endurance meet regulatory requirements for long-term clinical data integrity. | Use Scenario: Storing meter-specific calibration coefficients, tariff schedules, and tamper-event timestamps in ANSI C12.20-compliant utility meters. IC Role / Device Role / Timing Role: Secure, field-updatable memory with hardware write-lock for metrology-critical values. Use Value: Half-array write-protection isolates calibration constants (400h–7FFh) from volatile operational data, preventing inadvertent overwrite. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA16H-E/ST | Wider VCC range (1.7–5.5V), lower 100 kHz max clock below 2.5V, same pinout and memory map | Supports 1.8V microcontrollers; unsuitable where 2.5V minimum supply is enforced | Select when system operates below 2.5V or requires broader voltage margin |
| AT24C16C-SSHM-T | Same 16-Kbit capacity, 400 kHz I²C, but rated only to +85°C (industrial grade), no AEC-Q100 qualification | Lacks extended temperature and automotive qualification; lower cost for non-automotive use | Select for cost-sensitive consumer or industrial applications not requiring –40°C to +125°C operation |
Compared with 24LC16BH-E/ST, the 24AA16H-E/ST offers lower-voltage operation at the expense of reduced maximum clock speed below 2.5V, while the AT24C16C-SSHM-T provides identical functionality at industrial temperature range only - making 24LC16BH-E/ST the sole choice for AEC-Q100-compliant, extended-temperature designs.
Availability
24LC16BH-E/ST is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC configuration storage, medical infusion pump settings, and smart energy meter calibration data requiring stable component supply and long-term lifecycle support.
Supply support for 24LC16BH-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 microcontroller, analog, FPGA, and memory solutions, headquartered in Chandler, Arizona, with global design, manufacturing, and sales operations.
The 24LC16BH-E/ST belongs to Microchip's 24XX16H family of I²C EEPROMs, designed specifically for robust, low-power, nonvolatile data storage in automotive, industrial, and medical systems requiring extended temperature operation and hardware write protection.
FAQ
What is the maximum I²C clock frequency supported by the 24LC16BH-E/ST?
The 24LC16BH-E/ST supports a maximum I²C clock frequency of 400 kHz when operated within its specified VCC range of 2.5V to 5.5V. This is confirmed in the Device Selection Table and AC Characteristics section of the official datasheet (DS20002118B). Frequencies above 400 kHz are not guaranteed and may result in communication failures or data corruption. The 24LC16BH-E/ST does not support the 1 MHz mode available in the 24FC16H variant.
How does the WP pin function on the 24LC16BH-E/ST?
The WP (Write-Protect) pin on the 24LC16BH-E/ST controls hardware-level memory protection. When tied to VSS (logic low), full-array read/write access is enabled. When tied to VCC (logic high), writes to memory addresses 400h–7FFh (upper half) are inhibited, while reads remain fully functional across the entire 16-Kbit space. This behavior is explicitly defined in Section 2.4 and Figure 6-3 of DS20002118B and applies identically to the 24LC16BH-E/ST.
Is the 24LC16BH-E/ST qualified for automotive applications?
Yes, the 24LC16BH-E/ST is AEC-Q100 qualified and rated for the extended temperature range of –40°C to +125°C. This qualification is explicitly stated in the Features section of DS20002118B and confirmed in the Device Selection Table. The "E" suffix in the part number denotes Extended temperature grade, and the "-ST" suffix indicates the 8-lead SOIC package - both consistent with Microchip's automotive-grade marking conventions.
What is the page write buffer size of the 24LC16BH-E/ST?
The 24LC16BH-E/ST features a 16-byte page write buffer, enabling up to 16 bytes of data to be loaded into the on-chip latch before initiating the internal write cycle. This is documented in the Features list and Section 6.2 (Page Write) of DS20002118B. Page writes must remain within a single physical page boundary (aligned to 16-byte boundaries); crossing boundaries causes wraparound within the current page.
Does the 24LC16BH-E/ST require external pull-up resistors on SDA and SCL lines?
Yes, the 24LC16BH-E/ST requires external pull-up resistors on both SDA and SCL lines because it uses open-drain outputs. The datasheet recommends 2 kΩ for 400 kHz operation (Section 2.2). Pull-ups must connect to the same VCC rail used by the device. Omitting them will prevent proper I²C bus signaling, as neither line can drive high without external biasing.
24LC16BH-E/ST Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 16Kbit
- Memory Organization:
- 2K 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-TSSOP
24LC16BH-E/ST FAQ
1.How can I place an order for 24LC16BH-E/ST through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC16BH-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 24LC16BH-E/ST reliable?
The price and inventory of 24LC16BH-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 24LC16BH-E/ST is usually 5 days.
3.What payment methods are accepted for 24LC16BH-E/ST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC16BH-E/ST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC16BH-E/ST?
24LC16BH-E/ST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC16BH-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 24LC16BH-E/ST?
For technical support, including 24LC16BH-E/ST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC16BH-E/ST requirements.
6.How does Aetrix verify that 24LC16BH-E/ST is sourced from the original manufacturer or authorized distributors?
All 24LC16BH-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 24LC16BH-E/ST meets industry standards.
7.What is the process for return or replacement of 24LC16BH-E/ST?
All 24LC16BH-E/ST units undergo pre-shipment inspection (PSI). If there is an issue with 24LC16BH-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 24LC16BH-E/ST part is unused and in its original packaging.
Return procedure for 24LC16BH-E/ST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24LC16BH-E/ST Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
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AT24C02C-SSHM-T
Microchip Technology
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24LC01BT-I/OT
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M24C02-FMC6TG
STMicroelectronics
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AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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24LC01BT-I/SN
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24AA02UIDT-I/OT
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AT24C08C-STUM-T
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