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Microchip Technology 24LC16BH-I/SN
- Part No.:
- 24LC16BH-I/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
24LC16BH-I/SN.pdf
- Description:
- IC EEPROM 16KBIT I2C 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:536
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Product details
Overview
24LC16BH-I/SN 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, 1 μA standby current (I-temp), and hardware write-protect for memory addresses 400h–7FFh. It is used in embedded systems for parameter storage, calibration data retention, and configuration backup.
For engineers reviewing the 24LC16BH-I/SN datasheet, 24LC16BH-I/SN pinout, 24LC16BH-I/SN application, or 24LC16BH-I/SN equivalent, key selection criteria include its industrial temperature range (−40°C to +85°C), SOIC-8 package compatibility, half-array write-protection logic, and I²C timing compliance at 400 kHz under 2.5V–5.5V supply.
Technical Context
The 24LC16BH-I/SN 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, self-timed erase/write cycle, and Address Pointer that auto-increments during sequential reads.
Write protection is controlled by the WP pin: tied to VSS enables full memory access (000h–7FFh); tied to VCC locks addresses 400h–7FFh while allowing reads across the entire array. The device supports ACK polling to detect write completion without fixed delay timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 × 8), organized as eight 256-word blocks for block-select addressing |
| Supply Voltage | 2.5V–5.5V - defines minimum system rail compatibility; excludes 1.7V operation supported by 24AA16H/24FC16H variants |
| Max Clock Frequency | 400 kHz - sets maximum I²C bus speed under all valid VCC conditions; not rated for 1 MHz |
| Page Write Buffer | 16 bytes - enables burst writes within a single physical page boundary (00h–0Fh offset per block) |
| Write Protection | Hardware-enabled half-array lock (400h–7FFh) via WP pin - prevents accidental firmware/config corruption in critical sectors |
| Endurance & Retention | 1 million erase/write cycles and >200 years data retention - validated at 25°C/5.5V; suitable for infrequent but long-life field updates |
| Temperature Range | Industrial (−40°C to +85°C) - qualified for use in automotive control modules, industrial PLCs, and network infrastructure |
Pinout & Package
24LC16BH-I/SN is supplied in an 8-lead narrow SOIC (SN) package per Microchip drawing C04-057-SN Rev D, with 1.27 mm pitch, 3.90 mm body width, and JEDEC-standard footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSS | Ground reference | Common return path for all internal circuitry; must be low-impedance connection to system GND plane |
| WP | Write-protect input | Logic-high (VCC) disables writes to upper half of memory (400h–7FFh); floating or VSS enables full write access |
| SCL | Serial clock input | Master-generated clock synchronizing all I²C transactions; requires external pull-up resistor (2 kΩ typical @ 400 kHz) |
| SDA | Serial data I/O | Open-drain bidirectional bus line; requires external pull-up; changes only during SCL low except for START/STOP signaling |
| VCC | Power supply | 2.5V–5.5V DC input; bypass capacitor (0.1 μF ceramic) recommended adjacent to pin |
| A0, A1, A2 | No-connect | Not internally bonded; may be left floating, tied to VSS, or tied to VCC with no functional impact |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | 50 mV hysteresis (0.05 VCC) on SDA/SCL - rejects sub-50 ns noise spikes and ensures robust operation on noisy PCBs |
| Output slope control | Controlled rise/fall times (TR/TF ≤ 300 ns @ 5V) - eliminates ground bounce and EMI during bus transitions |
| Page write capability | 16-byte buffer allows efficient multi-byte writes with single STOP condition - reduces I²C transaction overhead by up to 94% vs. byte-by-byte writes |
| Hardware write-protect | Dedicated WP pin enables selective locking of 512-byte upper memory segment - protects boot parameters without software intervention |
| Extended temperature support | Qualified from −40°C to +85°C - meets industrial and automotive AEC-Q100 Grade 2 requirements for under-hood and factory-floor applications |
Applications
| Industrial Sensor Calibration | Automotive Body Control Module |
|---|---|
Use Scenario: Storing sensor offset/gain coefficients after factory calibration and field recalibration events. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed via I²C during power-up and maintenance mode. Use Value: Enables traceable, tamper-resistant calibration data storage with hardware write-lock on production values (400h–7FFh). | Use Scenario: Retaining seat/mirror position presets, lighting profiles, and door lock settings across ignition cycles. IC Role / Device Role / Timing Role: Slave EEPROM on vehicle chassis I²C bus; responds to master MCU read/write commands during wake-up sequence. Use Value: Provides guaranteed 200-year data retention and 1M-cycle endurance for user-customizable settings in harsh thermal environments. |
| Network Equipment Configuration | Medical Diagnostic Device Setup |
Use Scenario: Holding MAC address, IP settings, firmware version flags, and security keys in managed switches and routers. IC Role / Device Role / Timing Role: I²C-configurable memory mapped into system controller's peripheral space; accessed during boot and remote management sessions. Use Value: Supports secure write-protection of cryptographic keys (upper half) while allowing dynamic update of operational parameters (lower half). | Use Scenario: Saving patient-specific test protocols, calibration history, and regulatory audit logs in portable ultrasound and ECG units. IC Role / Device Role / Timing Role: Low-power serial EEPROM interfaced to ARM Cortex-M host; retains data during battery-backed sleep modes. Use Value: Meets IEC 60601-1 leakage current limits with 1 μA standby current and RoHS-compliant packaging for medical-grade assemblies. |
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/SN | Wider VCC range (1.7V–5.5V); same 400 kHz max clock; identical pinout and memory map | Supports ultra-low-voltage systems (e.g., coin-cell powered devices); lacks AEC-Q100 qualification | Select when 1.7V operation is required and automotive qualification is unnecessary |
| AT24C16D-SSHM-T | Same 16 Kbit size, SOIC-8, and I²C interface; 1 MHz max clock; 1.7V–5.5V supply; no hardware write-protect pin | Requires software-based protection schemes; higher speed suits high-throughput logging; not AEC-Q100 qualified | Select when faster write throughput is prioritized over hardware memory segmentation |
Compared with 24LC16BH-I/SN, the 24AA16H-I/SN extends voltage flexibility downward but sacrifices automotive qualification, while the AT24C16D-SSHM-T offers higher bandwidth and broader voltage support but removes dedicated hardware write protection-making it less suitable for safety-critical parameter locking.
Availability
24LC16BH-I/SN is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive body control modules, and network equipment configuration requiring stable component supply, long-term data integrity, and AEC-Q100-compliant sourcing.
Supply support for 24LC16BH-I/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 memory products, with global manufacturing and quality certifications including ISO 9001 and IATF 16949.
The 24LC16BH belongs to Microchip's 24XX16H family of I²C EEPROMs designed for reliable, low-power nonvolatile storage in automotive, industrial, and communications applications where data integrity and extended temperature operation are critical.
FAQ
What is the maximum I²C clock frequency supported by the 24LC16BH-I/SN?
The 24LC16BH-I/SN supports a maximum I²C clock frequency of 400 kHz across its full 2.5V–5.5V supply range. Unlike the 24FC16H variant, it is not rated for 1 MHz operation, and its AC timing parameters (e.g., THIGH, TLOW) are specified only up to 400 kHz. This makes it suitable for standard-mode and fast-mode I²C buses but not fast-mode plus.
How does the hardware write-protect feature work on the 24LC16BH-I/SN?
The WP pin on the 24LC16BH-I/SN controls hardware write-protection: when tied to VCC, writes to memory addresses 400h–7FFh (upper half) are inhibited while reads remain enabled; when tied to VSS or left floating, full memory access is permitted. This provides deterministic, power-on-safe protection without firmware involvement.
Is the 24LC16BH-I/SN pin-compatible with other 24XX16H family members in SOIC-8 packages?
Yes, the 24LC16BH-I/SN is pin-compatible with 24AA16H-I/SN and 24FC16H-I/SN in the SOIC-8 (SN) package. All share identical pin assignments (VSS, WP, SCL, SDA, VCC, and no-connect A0–A2), identical footprint, and compatible I²C electrical characteristics-enabling drop-in replacement where voltage and speed requirements align.
What is the page write buffer size and how does it affect memory programming efficiency?
The 24LC16BH-I/SN features a 16-byte page write buffer. This allows up to 16 bytes to be loaded into the buffer and written to memory with a single STOP condition, reducing I²C transaction overhead significantly versus byte-wise writes. However, page writes must stay within a single 16-byte physical boundary (e.g., 00h–0Fh), or data wraps within the page.
Does the 24LC16BH-I/SN require external pull-up resistors on SDA and SCL lines?
Yes, the 24LC16BH-I/SN requires external pull-up resistors on both SDA and SCL lines because its I²C interface uses open-drain outputs. For 400 kHz operation, a 2 kΩ pull-up to VCC is recommended; for 100 kHz, 10 kΩ is typical. Proper termination ensures signal integrity, meets rise-time specifications (TR ≤ 300 ns), and avoids bus contention.
24LC16BH-I/SN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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-SOIC
24LC16BH-I/SN FAQ
1.How can I place an order for 24LC16BH-I/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC16BH-I/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 24LC16BH-I/SN reliable?
The price and inventory of 24LC16BH-I/SN 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/SN is usually 5 days.
3.What payment methods are accepted for 24LC16BH-I/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC16BH-I/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC16BH-I/SN?
24LC16BH-I/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC16BH-I/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 24LC16BH-I/SN?
For technical support, including 24LC16BH-I/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC16BH-I/SN requirements.
6.How does Aetrix verify that 24LC16BH-I/SN is sourced from the original manufacturer or authorized distributors?
All 24LC16BH-I/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 24LC16BH-I/SN meets industry standards.
7.What is the process for return or replacement of 24LC16BH-I/SN?
All 24LC16BH-I/SN units undergo pre-shipment inspection (PSI). If there is an issue with 24LC16BH-I/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 24LC16BH-I/SN part is unused and in its original packaging.
Return procedure for 24LC16BH-I/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24LC16BH-I/SN Tags
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