24LC515-I/SM

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24LC515-I/SM

IC EEPROM 512KBIT I2C 8SOIJ

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規格

Supplier Microchip Technology
Package Tube
ProductStatus Active
MemoryType Non-Volatile
MemoryFormat EEPROM
Technology EEPROM
MemorySize 512Kb (64K x 8)
MemoryInterface I²C
ClockFrequency 400 kHz
WriteCycleTime-WordPage 5ms
AccessTime 900 ns
Voltage-Supply 2.5V ~ 5.5V
OperatingTemperature -40°C ~ 85°C (TA)
MountingType Surface Mount
Package/Case 8-SOIC (0.209, 5.30mm Width)

概述

Description

24LC515-I/SM is a high‑density I2C serial EEPROM from STMicroelectronics. It provides non‑volatile, byte‑addressable storage for microcontrollers and embedded systems. Access is via a two‑wire I2C bus (SCL, SDA) with A0–A2 address pins to form the device address; a WP pin enables hardware write protection. It supports random reads, sequential reads, and page-write operations (data written in fixed-size pages). Operating voltage is typically 2.5–5.5 V. The -I suffix denotes industrial temperature range (-40°C to +85°C); SM indicates an 8‑pin surface‑mount package. Write cycles take a few milliseconds, with endurance around 1,000,000 writes and data retention over many years. The exact memory size (density) varies by variant in the 24xx5xx family, so consult the datasheet for the precise capacity of 24LC515-I/SM. Typical applications include storing configuration data, calibration parameters, and small non-volatile logs in embedded systems.

Features

Key features of 24LC515-I/SM (I2C Serial EEPROM):
- 64 Kbit memory (8 Kbytes) organized for I2C access
- I2C two‑wire serial interface (SCL/SDA) with clock up to 1 MHz and clock stretching
- Two‑byte memory addressing (MSB/LSB) for full memory range
- Random read and sequential read capability
- Page write support (burst programming within a page)
- Write cycle time tWC: ~5 ms max
- Endurance: ~1,000,000 write cycles
- Data retention: ~40 years (at room temp)
- WP pin for hardware write protection; A0–A2 address pins for up to 8 devices on one bus
- Operating voltage: 2.5–5.5 V
- Industrial temperature option: -40°C to 85°C (I grade)
- Package options: 8‑pin (DIP8/SO8/SMT), with I/SM variants for industrial and SMT use
- Low standby current, ESD protection
Note: exact page size and some packaging variants may vary by supplier; consult the datasheet for precise numbers.

Package

The 24LC515-I/SM uses an 8‑pin surface‑mount SOIC (Small Outline Integrated Circuit) package.

Pinout

- Pin count: 8 pins (8-pin package, SOIC/DIP).
- Function: 2‑wire I2C serial EEPROM (non-volatile memory) with address lines A0–A2, WP (write‑protect), SDA, SCL, Vcc, and GND.

Manufacturer

- Manufacturer: Microchip Technology Inc.
- What kind of company: A multinational semiconductor company that designs and manufactures microcontrollers, memory (including serial EEPROMs like the 24LC515), analog, and other ICs.

Application

Typical applications for 24LC515-I/SM:
- Nonvolatile storage for embedded systems (config data, calibration constants, device IDs/serial numbers)
- Look-up tables and firmware tables; small data logging buffers
- I2C memory expansion for MCUs/SoCs in portable/consumer electronics
- Automotive/industrial equipment (industrial temperature range) and other harsh-environment use
- General, compact, low-power EEPROM replacement in SMD designs

Equivalent

Equivalent drop-ins for the 24LC515-I/SM are other 2-wire (I2C) serial EEPROMs with the same capacity from major vendors: ST M24Cxx, NXP CAT24Cxx, and Atmel/Microchip AT24Cxx. For example, if memory is 64Kbit use M24C64/CAT24C64/AT24C64; if 32Kbit use M24C32/CAT24C32/AT24C32, etc. Match the exact capacity and package for a true drop-in.

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