24FC1025-I/SN - 1Mbit I2C EEPROM 1.8-5.5V 1MHz 8-SOIC | Microchip
Teilenummer: 24FC1025-I/SN ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $3.1 | $3,10 |
| 10 | $2.79 | $27,90 |
| 100 | $2.48 | $248,00 |
| 500 | $2.2 | $1.100,00 |
| 1.000 | $1.95 | $1.950,00 |
24FC1025-I/SN Übersicht
An EEPROM (Electrically Erasable Programmable Read-Only Memory) is a non-volatile memory that retains data without power and allows byte-level erase and rewrite. The 24FC1025 belongs to the I2C serial EEPROM hierarchy, where each byte is addressed over a two-wire bus; the device supports standard (100 kHz), fast (400 kHz), and high-speed (1 MHz, "FC" = Fast Compatibility) modes. Functional address lines (A0, A1, A2) allow up to four devices on the same bus, yielding a maximum addressable capacity of 4 Mbits.
Key features include 5 µA typical standby current, 5 mA active read/write current, hardware write-protect pin, built-in noise suppression filters on SCL/SDA, and a write cycle endurance of 1 million cycles per byte with >200-year data retention. The 24FC1025 has a hardware WP pin that protects the upper quadrant of the memory array when tied high, plus a sequential read mode that allows reading of the entire memory in a single operation.
The architecture uses a two-wire serial interface with a 17-bit address space (block-select bit + 16-bit byte address) and an on-chip charge pump for the high-voltage programming circuits. The "FC" variant is the high-speed (1 MHz) version of the 24XX1025 family, while the 24LC1025 supports up to 400 kHz and the 24AA1025 supports up to 400 kHz with a lower 1.7V minimum supply.
Typical applications include personal communications and data-acquisition parameter storage, industrial controllers needing event-log retention, consumer-electronics user-preference storage (TV/AVR/set-top box settings), and black-box flight-data recorder buffers. The wide operating voltage and small footprint also suit battery-powered IoT nodes that need persistent configuration storage.
When designing with this part, observe the bus pull-up sizing rule: total capacitive bus loading (including trace capacitance and other devices) must remain below 400 pF for reliable 1 MHz operation. Decouple VCC with a 100 nF ceramic capacitor placed within 5 mm of the supply pin to suppress switching noise that can corrupt write operations.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, drawing on the 20001941 revision of the Microchip 24AA1025/24LC1025/24FC1025 datasheet.
Drop-in-Alternativen für 24FC1025-I/SN – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit 24FC1025-I/SN (gleiche Bauform und Footprint) – abweichend in Access Time, Interface, Memory Size, Memory Type, Operating Temperature.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
24LC1025-I/SN
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
24AA1025-I/SN
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
24FC1025T-I/SN
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
24FC1025-I/P
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
24LC1025-E/SN
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
M24C1025
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
24FC1025-I/SN Technische Daten
| Speichertyp | Non-volatile EEPROM (Electrically Erasable PROM) |
| Speichergröße | 1024 Kbit (128K x 8) |
| Speicherorganisation | Two blocks of 64K x 8 with selectable block addressing |
| Schnittstelle | I2C (2-wire serial) - Standard, Fast, and High-Speed modes |
| Maximale Taktfrequenz | 1 MHz (FC - Fast Compatibility) |
| Access Time | 400 ns |
| Operating Voltage Range | 1.8 V to 5.5 V |
| Standby Current | 5 µA (typical) |
| Active Read/Write Current | 5 mA (typical) |
| Page Write Size | Up to 128 bytes |
| Write Cycle Endurance | 1,000,000 cycles per byte (typical) |
| Data Retention | >200 years |
| Write Protection | Hardware WP pin protects upper quadrant of memory array |
| Address Lines | 3 (A0, A1, A2) for up to 4 devices on one bus |
| Sequential Read Mode | Yes - reads entire memory in single operation within address boundaries |
| Gehäuse | 8-pin SOIC (SN, 3.90 mm body, JEDEC MS-012) |
| Montageart | Surface Mount |
| Betriebstemperatur | -40 C to +85 C (Industrial, "I" grade) |
| MSL-Level | 1 (unlimited floor life at <30 C / 85 % RH) |
| RoHS-Status | Compliant |
| Lead-Free / Halogen-Free | Yes / Yes |
| Noise Suppression | Schmitt-trigger inputs on SCL/SDA with filter |
24FC1025-I/SN Pin-Konfiguration
| Pin 1 | A0 — User-configurable chip address bit 0 (tied to VCC or GND for bus selection) |
| Pin 2 | A1 — User-configurable chip address bit 1 (tied to VCC or GND for bus selection) |
| Pin 3 | A2 — User-configurable chip address bit 2 (tied to VCC or GND for bus selection) |
| Pin 4 | GND — Ground reference for logic and I2C bus |
| Pin 5 | SDA — I2C serial data (bidirectional open-drain, requires external pull-up) |
| Pin 6 | SCL — I2C serial clock input (open-drain, requires external pull-up) |
| Pin 7 | WP — Write-protect input - logic high disables writes to upper quadrant of memory array |
| Pin 8 | VCC — Positive supply input, 1.8V to 5.5V - decouple with 100 nF ceramic within 5 mm |
Typische Anwendungen
24FC1025-I/SN ist geeignet für 6 Anwendungs: Industrial Data Logging and Parameter Storage, Consumer Electronics User Preference Storage, Personal Communications Device Configuration Memory, IoT Sensor Node Configuration and Identity Storage, Black-Box Flight Data Recorder Buffer, Medical Device Parameter Memory.
Industrial Data Logging and Parameter Storage
The 24FC1025-I/SN fits industrial data logging because its 1024-Kbit non-volatile memory stores calibration coefficients, event timestamps, and operating hours that must survive power loss. With 1.8V to 5.5V supply it interfaces directly to 3.3V MCUs, while its 1 MHz I2C throughput (400 ns access) keeps bus time short on multi-sensor acquisition nodes. Its 5 µA standby and 1 million write cycles per byte let it accumulate logs over years without service, and the hardware WP pin protects calibration from accidental writes. Industrial -40 C to +85 C operation is qualified by the "-I" suffix. The 8-SOIC footprint drops onto standard through-hole-pad layouts for retrofit modules.
Empfohlen
Consumer Electronics User Preference Storage
The 24FC1025-I/SN stores channel lists, audio/video calibration tables, language settings, and parental-control passwords in TVs, set-top boxes, and AV receivers. Its 128 KB capacity is more than enough for hundreds of preference records, and the 1 MHz I2C bus lets a system-on-chip read presets during cold-boot in under 200 ms. With 5 µA standby, it does not measurably drain standby power budgets on Energy-Star compliant products. The hardware WP pin is ideal for one-time-programmable factory calibration segments, while the lower quadrant is left user-writeable. The 8-SOIC package fits standard consumer-PCB land patterns.
Empfohlen
Personal Communications Device Configuration Memory
The 24FC1025-I/SN suits personal-communications devices such as cordless handsets, two-way radios, and BLE audio modules where it stores paired-device lists, network credentials, and DSP tuning parameters. Its 1 MHz I2C clock supports fast configuration loads during handset wake-up sequences, and the 1.8V minimum supply means it can run from a single Li-ion cell without an LDO. The hardware write-protect pin secures factory calibration data while allowing user-accessible regions. With >200-year data retention, paired-device information survives years of shelf time before activation.
Empfohlen
IoT Sensor Node Configuration and Identity Storage
The 24FC1025-I/SN provides reliable configuration storage for IoT sensor nodes, holding per-device calibration, secure element data, firmware-update flags, and network keys. Its 1.8V minimum supply lets it run from energy-harvested or 2x alkaline power rails, and its 5 µA standby adds negligible overhead to sleep-mode budgets. With 1 million write cycles per byte, the part can absorb frequent sensor-recalibration writes over multi-year deployments. Sequential-read mode lets the host MCU read the full 128 KB image in one continuous I2C transaction, simplifying firmware-image validation.
Empfohlen
Black-Box Flight Data Recorder Buffer
The 24FC1025-I/SN serves as a non-volatile event buffer in lightweight flight-data recorders on UAVs and small drones, where it retains the last 128 KB of telemetry before any incident. Its 5 mA active current does not significantly impact UAV flight time, and the hardware WP pin can lock critical-incident data once written. With -40 C to +85 C industrial temperature rating, the EEPROM operates reliably across cold high-altitude and hot ground conditions. The 1 MHz I2C speed supports high-rate telemetry bursts without bus contention.
Empfohlen
Medical Device Parameter Memory
The 24FC1025-I/SN is well suited to non-implantable medical devices such as portable monitors, infusion-pump parameter storage, and diagnostic-reader calibration tables. Its >200-year data retention preserves calibration data across the device's service life, and the 1 million write-cycle endurance per byte supports frequent audit-log entries. Hardware write-protect via the WP pin protects validated calibration segments, and the 1 MHz I2C bus minimizes load time during power-on self-test. Industrial temperature range supports typical clinical and home-use environments.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für 24FC1025-I/SN – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | 24LC1025-I/SN | 24AA1025-I/SN | 24FC1025T-I/SN | 24FC1025-I/P | 24LC1025-E/SN | M24C1025 |
|---|---|---|---|---|---|---|---|
| Package | 8-SOIC (SN) | 8-SOIC (SN) - same | 8-SOIC (SN) - same | 8-SOIC (SN) - same | 8-PDIP (P) - through-hole | 8-SOIC (SN) - same | 8-SOIC - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | STMicroelectronics |
| Memory Size | 1024 Kbit (128K x 8) | 1024 Kbit (128K x 8) - same | 1024 Kbit (128K x 8) - same | 1024 Kbit (128K x 8) - same | 1024 Kbit (128K x 8) - same | 1024 Kbit (128K x 8) - same | 1024 Kbit (128K x 8) - same |
| Maximum I2C Clock | 1 MHz | 400 kHz (-60%) | 400 kHz (-60%) | 1 MHz - same | 1 MHz - same | 400 kHz (-60%) | 400 kHz (-60%) |
| Operating Voltage Range | 1.8 V to 5.5 V | 1.8 V to 5.5 V - same | 1.7 V to 5.5 V (lower min) | 1.8 V to 5.5 V - same | 1.8 V to 5.5 V - same | 1.8 V to 5.5 V - same | 1.8 V to 5.5 V - same |
| Operating Temperature Range | -40 C to +85 C (Industrial) | -40 C to +85 C - same | -40 C to +85 C - same | -40 C to +85 C - same | -40 C to +85 C - same | -40 C to +125 C (Extended, wider) | -40 C to +85 C - same |
| Page Write Size | 128 bytes | 128 bytes - same | 128 bytes - same | 128 bytes - same | 128 bytes - same | 128 bytes - same | 128 bytes - same |
| Write-Protect Pin | Yes (hardware WP pin) | Yes - same | Yes - same | Yes - same | Yes - same | Yes - same | Yes - same |
Wichtigste Unterscheidungsmerkmale
- High-speed 1 MHz I2C bus support (vs. 24LC1025-I/SN)
- Hardware write-protect pin covers upper quadrant only (vs. Generic I2C EEPROMs without WP)
- 4 Mbits addressable per bus via three address pins (vs. Two-address-pin EEPROMs)
- 1 million write-cycle endurance per byte (vs. Flash-emulation EEPROMs with 100k cycles)
Designhinweise
Estimated: place a 100 nF ceramic decoupling capacitor within 5 mm of the VCC pin (pin 8), using the shortest possible trace. The 24FC1025-I/SN draws 5 mA active current with sub-microsecond transients; without local decoupling, supply noise can corrupt write operations and trigger the internal write-protection logic prematurely. For battery applications, the same capacitor also reduces inrush during write cycles. Route SDA and SCL as parallel traces of matched length, with ground on adjacent layers to minimize crosstalk.
Total bus capacitance (sum of all device pin capacitance, trace capacitance to ground, and any pull-up parasitic effects) must remain below 400 pF for reliable 1 MHz operation. Higher capacitance causes signal rise/fall times to exceed the I2C spec, leading to false start/stop conditions and write failures. If you must exceed this, add a bus repeater or buffer, or reduce clock frequency to 400 kHz. Also note that the WP pin must be hard-tied either HIGH or LOW - floating it can cause intermittent write protection that is hard to debug.
Pull-up resistor sizing for SDA and SCL is critical at 1 MHz operation. Estimated: with bus capacitance of 50 pF, a 1 kohm to 2.2 kohm pull-up to VCC gives acceptable rise times. Higher values (4.7 kohm to 10 kohm) work only if bus capacitance is under 20 pF. For mixed 3.3V / 5V buses, level-translate the pull-up reference, not the data lines directly, to avoid contention. Place pull-ups at the bus ends, not at the master, to suppress ringing.
Keep EEPROM SDA/SCL traces away from switching-converter nodes (e.g., inductor, switch-node copper) by at least 5 mm or one trace-width. Magnetic coupling can inject common-mode noise that the EEPROM's noise-suppression filters partially reject but cannot fully eliminate at 1 MHz. Use a ground guard trace on the layer below SDA/SCL if board space permits. The WP pin trace should be short and away from any digital switching signals to avoid glitches during writes.
Compliance-Informationen
RoHS and REACH compliant per Microchip product page. Lead-free and halogen-free. Not AEC-Q100 qualified - for automotive applications consider Microchip's AEC-Q100 qualified variants or third-party automotive-grade EEPROMs.
