Volver a Microchip Technology

Microchip Technology 25CS320 32-Kbit SPI Serial EEPROM

Microchip Technology 25CS320 32-Kbit SPI Serial EEPROM uses an SPI-compatible bus organized into 4096 bytes of 8-bits each (4KB). Microchip Technology 25CS320 is designed for consumer, industrial, and automotive applications and offers reliable, nonvolatile memory storage with a wide operating voltage range of 1.7V to 5.5V. The device requires a clock input (SCK), data input (SI), and data output (SO) lines, with access controlled via a Chip Select (CS) input. It also features a pause function, allowing the host to handle higher-priority tasks while ignoring input transitions, except for Chip Select.

Features

  • 32-kbit serial EEPROM
    • 4096 x 8-bit organization
    • Page size of 32 bytes
    • Byte or sequential reads
    • Byte or page writes
    • Self-timed write cycle (4ms maximum)
  • Backward compatible with 25AA320A/25LC320A and AT25320B serial EEPROMs
  • Security register
    • Preprogrammed 128-bit serial number
    • 32-byte user-programmable, lockable ID page
  • Built-in error correction code (ECC) logic, ECC status bit via the STATUS register
  • Undervoltage lockout detection
  • JEDEC® SPI manufacturer read ID support
  • High-speed clock frequency
    • 20MHz at VCC ≥ 4.5V
    • 10MHz at VCC ≥ 2.5V
    • 5MHz at VCC ≥ 1.7V
  • Legacy write protection mode, block protection functionality (quarter, half, or entire memory array)
  • Enhanced write protection mode
    • User-definable memory partitions
    • Each partition can be set independently and has unique protection behavior
  • Low-power CMOS technology
    • 1.7V to 5.5V voltage range
    • 5.0mA at 5.5V, 20MHz write current
    • 3.0mA at 4.5V, 10MHz read current
    • 1.0µA at 5.5V (I-temp.) standby current
  • High reliability
    • More than four million erase/write cycles
    • Built-in ECC logic for increased reliability
    • >200 years of data retention
    • >4000V ESD protection
  • Temperature ranges
    • Industrial (I) -40°C to +85°C
    • Extended (E) -40°C to +125°C
    • Extended (H) -40°C to +150°C
  • AEC-Q100 automotive qualified

Applications

  • Consumer memory storage
  • Industrial memory storage
  • Automotive memory storage

Block Diagram

Block Diagram - Microchip Technology 25CS320 32-Kbit SPI Serial EEPROM

Related Products

Microchip Technology Serial Memory SPI Evaluation Kit

Demonstrates features, functionality and low-power operation of Microchip SPI Serial EEPROM devices.

Learn Moreacerca de Microchip Technology Serial Memory SPI Evaluation Kit View Productsrelacionado con Microchip Technology Serial Memory SPI Evaluation Kit
Publicado: 2024-12-20 | Actualizado: 2025-01-10