text.skipToContent text.skipToNavigation

Référence fabricant


25LC640 Series 64 Kbit (8K x 8) 5.5 V SMT SPI Bus Serial EEPROM - SOIC-8

Modèle ECAD:
Nom du fabricant: Microchip
Emballage standard:
Product Variant Information section
Code de date: 2309
Product Specification Section
Microchip 25LC640T-I/SN - Caractéristiques techniques
Attributes Table
Memory Density: 64kb
Memory Organization: 8 K x 8
Supply Voltage-Nom: 2.5V to 5.5V
Clock Frequency-Max: 2MHz
Write Cycle Time-Max (tWC): 5ms
Style d'emballage :  SOIC-8
Méthode de montage : Surface Mount
Fonctionnalités et applications

The 25LC640 (25XX640*) are 64 kbit Serial Electrically Erasable PROMs. The memory is accessed via a simple Serial Peripheral Interface (SPI) compatible serial bus. The bus signals required are a clock input (SCK) plus separate data in (SI) and data out (SO) lines. Access to the device is controlled through a Chip Select [CS(bar)] input.

Communication to the device can be paused via the hold pin [HOLD(bar)]. While the device is paused, transitions on its inputs will be ignored, with the exception of Chip Select, allowing the host to service higher priority interrupts. The 25XX640 is available in standard packages including 8-lead PDIP and SOIC, and advanced packaging including 8-lead MSOP, 8-lead TSSOP, DFN and TDFN.


  • Max. Clock 10 MHz
  • Low-Power CMOS Technology
    • Max. Write Current: 5 mA at 5.5 V, 10 MHz
    • Read Current: 5 mA at 5.5 V, 10 MHz
    • Standby Current: 1 μA at 5.5 V
  • 8192 x 8-bit Organization
  • 32 Byte Page
  • Self-Timed Erase and Write Cycles (5 ms max.)
  • Block Write Protection
    • Protect none, 1/4, 1/2 or all of array
  • Built-In Write Protection
    • Power-on/off data protection circuitry
    • Write enable latch
    • Write-protect pin
  • Sequential Read
  • High Reliability
    • Endurance: 1,000,000 erase/write cycles
    • Data retention: > 200 years
    • ESD protection: > 4000 V
  • Temperature Ranges Supported:
    • Industrial (I): -40°C to +85°C

Learn more about the 25LC640 family of EEPROM

Pricing Section
Stock global :
6 600
3 300
d’Allemagne (En ligne seulement):
3 300
Sur commande :Order inventroy details
9 900
Stock d'usine :Stock d'usine :
Délai d'usine :
5 Semaines
Commande minimale :
Multiples de :
2 722,50 $
Prix Internet
3 300+
Product Variant Information section