My Inquiry
My Account
Microchip Technology 24LC08B-I/MS
- Part No.:
- 24LC08B-I/MS
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
24LC08B-I/MS.pdf
- Description:
- IC EEPROM 8KBIT I2C 400KHZ 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:951
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
24LC08B-I/MS from Microchip Technology Inc. is an 8-Kbit I²C-compatible serial EEPROM organized as four 256 × 8-bit blocks, operating from 2.5V to 5.5V with 400 kHz max clock frequency, 5 ms max page write time, and industrial temperature range (–40°C to +85°C). It features hardware write-protection via the WP pin, 16-byte page write buffer, and Schmitt-trigger inputs for noise immunity - deployed in embedded system configuration storage and sensor calibration data retention.
For engineers reviewing the 24LC08B-I/MS datasheet, 24LC08B-I/MS pinout, 24LC08B-I/MS application, or 24LC08B-I/MS equivalent, key selection criteria include VCC min (2.5V), I²C speed grade (400 kHz), MSOP-8 package compatibility, WP functionality, and endurance (>1M cycles) under industrial thermal stress.
Technical Context
The 24LC08B-I/MS implements a two-wire I²C interface with fixed 4-bit device code (1010b), block-select addressing (B1/B0 bits), and R/W bit control. Its internal architecture includes a 16-byte page latch, HV generator for EEPROM programming, and address pointer auto-increment logic supporting current-address, random, and sequential read modes.
Write protection is implemented via dedicated WP pin tied to VCC (full-array lock) or VSS (enabled), with no internal connection to A0/A1/A2 pins. The device uses open-drain SDA/SCL with external pull-ups and supports acknowledge polling to detect write cycle completion without fixed timing delays.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (four 256 × 8-bit blocks), enabling compact nonvolatile storage for firmware parameters or device IDs |
| VCC Range | 2.5V–5.5V - requires minimum 2.5V supply; not compatible with 1.8V systems unlike 24AA08 |
| Max Clock Frequency | 400 kHz - supports standard-mode I²C; not 1 MHz capable like 24FC08 |
| Page Write Buffer | 16 bytes - allows burst writes within one physical page boundary (0–15, 16–31, etc.) without rollover risk |
| Write Cycle Time | 5 ms maximum - defines worst-case latency before next bus operation can begin |
| Endurance | 1,000,000 erase/write cycles - ensures long-term reliability in field-updatable applications |
| Data Retention | 200 years - guarantees data integrity over full product lifecycle without refresh |
Pinout & Package
24LC08B-I/MS is supplied in an 8-lead MSOP (Micro Small Outline Package) with 0.65 mm pitch, body size 3.0 × 3.0 mm, and exposed pad option (not electrically connected). Pin 1 is marked by beveled corner or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSS | Ground reference | Return path for all internal circuits; must be low-impedance connection to system GND |
| WP | Hardware write-protect input | Logic-high disables all write operations; tied to VCC for permanent lock, VSS for full access |
| SCL | I²C clock input | Open-drain input requiring external pull-up; synchronizes all address/data transfers |
| SDA | I²C bidirectional data line | Open-drain I/O requiring external pull-up; carries addresses, commands, and data |
| VCC | Power supply | 2.5V–5.5V DC input; decoupling capacitor (0.1 µF) 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 |
|---|---|
| Schmitt-trigger inputs | 5% VCC hysteresis on SDA/SCL - rejects noise spikes ≤50 ns, improving bus robustness in EMI-prone environments |
| Output slope control | Controlled SDA fall time (≤250 ns) - eliminates ground bounce during high-speed transitions |
| Page write capability | 16-byte buffer enables efficient bulk writes - reduces I²C transaction overhead vs. byte-by-byte writes |
| Hardware write-protect | Dedicated WP pin provides tamper-resistant memory lockdown - critical for secure boot or calibration data |
| ESD protection | ≥4 kV HBM - meets industrial handling requirements without external protection circuitry |
Applications
| Industrial Sensor Node | Medical Diagnostic Device |
|---|---|
Use Scenario: Storing calibrated offset/gain coefficients and sensor linearization tables across power cycles. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding factory-trimmed analog front-end parameters. Use Value: Enables zero-touch recalibration after firmware updates; retains data for 200 years without battery backup. | Use Scenario: Recording last-used operational settings (e.g., pressure range, sampling rate) before shutdown. IC Role / Device Role / Timing Role: Persistent user preference store accessed at boot via I²C by host MCU. Use Value: Reduces setup time for clinicians; WP pin prevents accidental overwrite during routine diagnostics. |
| Smart Energy Meter | Automotive Body Control Module |
Use Scenario: Logging tariff schedules, meter ID, and tamper-event timestamps in utility-grade meters. IC Role / Device Role / Timing Role: Secure event log storage with write-protection enabled during normal operation. Use Value: Meets IEC 62056 compliance for data integrity; 1M-cycle endurance supports 10+ year field life. | Use Scenario: Saving seat/mirror position memory and lighting profiles in AEC-Q100 qualified modules. IC Role / Device Role / Timing Role: Automotive-grade EEPROM interfacing with CAN-connected MCU via I²C bridge. Use Value: Qualified to –40°C to +85°C; withstands automotive thermal cycling without data corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA08-I/MS | Wider VCC range (1.7V–5.5V); same 400 kHz speed and MSOP-8 package | Supports 1.8V systems where 24LC08B-I/MS cannot operate | Select when low-voltage operation below 2.5V is required; otherwise identical functional behavior |
| 24LC08B-I/SN | Same electrical specs but in 8-lead SOIC (SN) package (3.9 mm width vs. MSOP's 3.0 mm) | Used where board space permits larger footprint or legacy SOIC layout exists | Choose for compatibility with existing SOIC footprints; no electrical or timing differences |
Compared with 24LC08B-I/MS, 24AA08-I/MS extends voltage flexibility downward but shares identical timing and pinout, while 24LC08B-I/SN offers mechanical interchangeability in SOIC layouts without altering firmware or timing margins.
Availability
24LC08B-I/MS is available at Aetrix Electronics and suitable for industrial sensor nodes, medical diagnostic devices, smart energy meters, and automotive body control modules requiring stable component supply across extended production lifecycles.
Supply support for 24LC08B-I/MS 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 24LC08B belongs to Microchip's 24XX08 family of I²C serial EEPROMs, designed specifically for reliable, low-power nonvolatile data storage in space-constrained embedded systems across industrial, medical, and automotive markets.
FAQ
What is the minimum supply voltage required for reliable operation of the 24LC08B-I/MS?
The 24LC08B-I/MS requires a minimum VCC of 2.5V for guaranteed operation across its full industrial temperature range (–40°C to +85°C). Unlike the 24AA08 variant, it is not rated for 1.7V or 1.8V operation. Attempting to power the 24LC08B-I/MS below 2.5V may result in incomplete writes, read errors, or failure to acknowledge I²C transactions.
Does the 24LC08B-I/MS support 1 MHz I²C communication?
No, the 24LC08B-I/MS supports up to 400 kHz I²C clock frequency. It is not rated for 1 MHz operation - that capability is exclusive to the 24FC08 variant in the same family. Using SCL > 400 kHz with the 24LC08B-I/MS violates AC timing specifications and may cause data corruption or bus lockup.
How does the WP pin function on the 24LC08B-I/MS, and what happens if it's left unconnected?
The WP pin on the 24LC08B-I/MS enables hardware write-protection: tied to VCC, it locks the entire 8-Kbit array against writes; tied to VSS, writes are permitted. If left unconnected (floating), behavior is undefined per datasheet - Microchip specifies it must be actively driven to VCC or VSS. Floating WP may cause intermittent write failures or partial protection.
Can the 24LC08B-I/MS be used in automotive applications?
Yes - the 24LC08B-I/MS is AEC-Q100 qualified for automotive use and rated for industrial temperature (–40°C to +85°C), making it suitable for body control modules, infotainment subsystems, and other non-safety-critical automotive electronics. It is not qualified for under-hood engine control applications requiring extended temperature grades.
What is the maximum number of bytes that can be written in a single page write operation for the 24LC08B-I/MS?
The 24LC08B-I/MS supports a 16-byte page write buffer. A single page write operation can transfer up to 16 bytes - provided all addresses fall within the same physical 16-byte page boundary (e.g., 0x00–0x0F, 0x10–0x1F). Crossing a page boundary causes wraparound, overwriting earlier bytes in the same page rather than advancing to the next page.
24LC08B-I/MS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 8Kbit
- Memory Organization:
- 256 x 8 x 4
- 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-MSOP
24LC08B-I/MS FAQ
1.How can I place an order for 24LC08B-I/MS through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC08B-I/MS 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 24LC08B-I/MS reliable?
The price and inventory of 24LC08B-I/MS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC08B-I/MS is usually 5 days.
3.What payment methods are accepted for 24LC08B-I/MS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC08B-I/MS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC08B-I/MS?
24LC08B-I/MS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC08B-I/MS 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 24LC08B-I/MS?
For technical support, including 24LC08B-I/MS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC08B-I/MS requirements.
6.How does Aetrix verify that 24LC08B-I/MS is sourced from the original manufacturer or authorized distributors?
All 24LC08B-I/MS 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 24LC08B-I/MS meets industry standards.
7.What is the process for return or replacement of 24LC08B-I/MS?
All 24LC08B-I/MS units undergo pre-shipment inspection (PSI). If there is an issue with 24LC08B-I/MS, 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 24LC08B-I/MS part is unused and in its original packaging.
Return procedure for 24LC08B-I/MS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24LC08B-I/MS 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…
