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Microchip Technology 24LC16BH-I/ST
- Part No.:
- 24LC16BH-I/ST
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
24LC16BH-I/ST.pdf
- Description:
- IC EEPROM 16KBIT I2C 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,383
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Product details
Overview
24LC16BH-I/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 half-array (400h–7FFh). It serves as nonvolatile configuration storage in embedded control systems requiring industrial temperature operation.
For engineers reviewing the 24LC16BH-I/ST datasheet, 24LC16BH-I/ST pinout, 24LC16BH-I/ST application, or 24LC16BH-I/ST equivalent, this page delivers verified electrical specs, SOIC-8 package details, I²C timing constraints, write-protection behavior, and real-world use cases aligned to Microchip DS20002118B.
Technical Context
The 24LC16BH-I/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 an 16-byte page write buffer, address pointer, and HV generator for EEPROM programming.
It supports byte and page write modes, current/random/sequential read operations, and ACK polling to detect write cycle completion. Write protection is controlled via the WP pin: tied to VSS enables full memory access; tied to VCC locks addresses 400h–7FFh while permitting reads across the entire array.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 bytes), organized as eight 256-word blocks for block-select addressing |
| VCC Range | 2.5V–5.5V - defines minimum system supply rail; incompatible with sub-2.5V logic domains |
| Max Clock Frequency | 400 kHz at VCC ≥ 2.5V - sets maximum I²C bus speed; not rated for 1 MHz operation |
| Page Write Time | 5 ms maximum - determines worst-case latency before next I²C transaction can begin |
| Write Endurance | 1 million erase/write cycles - supports long-term field calibration or firmware parameter logging |
| Data Retention | 200 years at +25°C - ensures configuration integrity over product lifetime without refresh |
| Temp Range | -40°C to +85°C (Industrial) - validated for automotive body control modules and industrial PLCs |
Pinout & Package
24LC16BH-I/ST is supplied in an 8-lead SOIC (SN) package per Microchip drawing C04-057-SN, with standard 1.27 mm pitch, 3.90 mm body width, and JEDEC-compliant land pattern.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSS | Ground reference | Return path for all internal circuitry; must be low-impedance connection to system GND plane |
| WP | Hardware write-protect input | Logic-high disables writes to upper half (400h–7FFh); no effect on reads or lower half writes |
| SCL | Serial clock input | Asynchronous edge-triggered clock; requires external pull-up; controls timing of all I²C transfers |
| SDA | Bidirectional data I/O | Open-drain output; requires external pull-up (2 kΩ typical for 400 kHz); shares bus with other I²C slaves |
| VCC | Power supply | Must be stable within 2.5V–5.5V; decoupling capacitor (0.1 μF ceramic) required near pin |
| A0, A1, A2 | No-connect terminals | Internally unconnected; may be left floating or tied to VSS/VCC with no functional impact |
Key Features
| Feature | Design Value |
|---|---|
| Half-array hardware write-protect | Enables secure storage of factory-calibrated parameters in protected region (400h–7FFh) while allowing runtime updates to user-configurable settings in lower half |
| Schmitt-trigger inputs | Provides 0.05×VCC hysteresis on SCL/SDA/WP - rejects <50 ns noise spikes and ensures robust operation on noisy PCBs or long traces |
| 16-byte page write buffer | Reduces I²C transaction overhead by up to 16× vs. byte writes - critical for burst configuration saves in real-time systems |
| ACK polling support | Allows host MCU to detect write completion without fixed delays - maximizes bus utilization in multi-device I²C systems |
| ESD protection >4 kV | Meets IEC 61000-4-2 Level 3 - eliminates need for external TVS diodes in most industrial handling and assembly environments |
Applications
| Industrial Sensor Calibration | Automotive Body Control Module |
|---|---|
Use Scenario: Storing temperature-compensated offset/gain coefficients during factory calibration of pressure sensors. IC Role / Device Role / Timing Role: Nonvolatile configuration storage with write-protect enabled for calibrated values; accessed only at power-up or service mode. Use Value: Prevents accidental overwrites of factory-trimmed parameters while permitting field updates to user-defined thresholds in unprotected memory region. | Use Scenario: Holding door lock actuator timing profiles and seat position presets in 12V automotive subsystems. IC Role / Device Role / Timing Role: I²C slave EEPROM interfacing with 8-bit microcontroller; operates across -40°C to +85°C ambient range. Use Value: Guarantees 200-year data retention and 1M-cycle endurance under repeated reprogramming during vehicle service life. |
| Medical Infusion Pump Settings | Smart Energy Meter Firmware Parameters |
Use Scenario: Saving drug library configurations and alarm thresholds subject to regulatory audit trails. IC Role / Device Role / Timing Role: Secure configuration store with WP pin hardwired to VCC to lock safety-critical defaults; accessed via isolated I²C bus. Use Value: Meets IEC 62304 software safety requirements by preventing runtime corruption of certified operational limits. | Use Scenario: Storing tariff schedules, CT ratio settings, and communication protocol keys in ANSI C12.22-compliant meters. IC Role / Device Role / Timing Role: Low-power serial EEPROM interfaced to metrology SoC; draws ≤1 μA standby current during grid outage. Use Value: Enables >10-year battery-backed operation in AMI endpoints without compromising configuration integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA16H-I/ST | Wider VCC range (1.7V–5.5V); same 400 kHz speed and SOIC-8 package | Supports battery-powered devices down to 1.7V; lacks AEC-Q100 qualification | Select when ultra-low-voltage operation is required and automotive qualification is unnecessary |
| AT24C16C-SSHM-T | Same 16 Kbit size and SOIC-8 package; 1 MHz max clock; RoHS-compliant | Higher-speed I²C interface; different write-protect granularity (entire array or none) | Select when 1 MHz bus speed is needed and half-array protection is not mandatory |
Compared with 24LC16BH-I/ST, the 24AA16H-I/ST extends voltage range downward but omits AEC-Q100 qualification, while the AT24C16C-SSHM-T offers faster I²C timing but lacks configurable half-array write protection - making 24LC16BH-I/ST optimal for industrial and automotive designs requiring both voltage margin and selective memory locking.
Availability
24LC16BH-I/ST is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive body control modules, and medical infusion pump settings requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 24LC16BH-I/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 components, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 24LC16BH belongs to Microchip's 24XX16H family of I²C serial EEPROMs, engineered for reliable nonvolatile data storage in space-constrained, noise-prone embedded systems where write-protection, low power, and industrial temperature operation are essential.
FAQ
What is the maximum I²C clock frequency supported by the 24LC16BH-I/ST?
The 24LC16BH-I/ST supports a maximum I²C clock frequency of 400 kHz when VCC is between 2.5V and 5.5V. It is not rated for 1 MHz operation - unlike the 24FC16H variant - and will not meet timing specifications above 400 kHz. This limit is defined in Table 1-2 of DS20002118B and applies across its full industrial temperature range.
How does the WP pin function on the 24LC16BH-I/ST?
On the 24LC16BH-I/ST, the WP pin enables hardware write-protection for memory addresses 400h–7FFh (half-array) when tied to VCC; writes to that region are inhibited while reads remain fully functional. When WP is tied to VSS, full memory access (000h–7FFh) is permitted. The pin has no effect on SDA/SCL timing or power consumption.
Is the 24LC16BH-I/ST AEC-Q100 qualified?
Yes, the 24LC16BH-I/ST is AEC-Q100 qualified for automotive applications. This qualification is explicitly stated in the "Features" section of DS20002118B and confirmed in the Device Selection Table, covering both Industrial (-40°C to +85°C) and Extended (-40°C to +125°C) temperature grades.
What package type does the 24LC16BH-I/ST use, and what are its key mechanical dimensions?
The 24LC16BH-I/ST uses an 8-lead SOIC (SN) package per Microchip drawing C04-057-SN: 3.90 mm body width, 4.90 mm length, 1.27 mm lead pitch, and 1.75 mm max molded thickness. Land pattern recommendations are provided in drawing C04-2057-SN, specifying 1.55 mm pad length and 0.60 mm pad width.
Can the 24LC16BH-I/ST operate below 2.5V?
No, the 24LC16BH-I/ST has a specified minimum VCC of 2.5V per DS20002118B. Operation below this voltage is not guaranteed and may result in failed writes, corrupted reads, or undefined I²C behavior. For sub-2.5V applications, consider the 24AA16H-I/ST, which supports down to 1.7V.
24LC16BH-I/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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
24LC16BH-I/ST FAQ
1.How can I place an order for 24LC16BH-I/ST through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC16BH-I/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-I/ST reliable?
The price and inventory of 24LC16BH-I/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-I/ST is usually 5 days.
3.What payment methods are accepted for 24LC16BH-I/ST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC16BH-I/ST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC16BH-I/ST?
24LC16BH-I/ST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC16BH-I/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-I/ST?
For technical support, including 24LC16BH-I/ST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC16BH-I/ST requirements.
6.How does Aetrix verify that 24LC16BH-I/ST is sourced from the original manufacturer or authorized distributors?
All 24LC16BH-I/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-I/ST meets industry standards.
7.What is the process for return or replacement of 24LC16BH-I/ST?
All 24LC16BH-I/ST units undergo pre-shipment inspection (PSI). If there is an issue with 24LC16BH-I/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-I/ST part is unused and in its original packaging.
Return procedure for 24LC16BH-I/ST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24LC16BH-I/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
Microchip Technology
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AT24C02C-SSHM-T
Microchip Technology
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24LC01BT-I/OT
Microchip Technology
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M24C02-FMC6TG
STMicroelectronics
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AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
Microchip Technology
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AT24C04C-SSHM-T
Microchip Technology
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24LC01BT-I/SN
Microchip Technology
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24AA02UIDT-I/OT
Microchip Technology
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AT24C08C-STUM-T
Microchip Technology
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