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FM25640B-GTR

Public Made by Adom

by adom

Infineon Cypress Semicon FRAM, SOIC-8. Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.

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FM25640B-GTR

Infineon Cypress Semicon · FRAM · SOIC-8

FM25640B-GTR from Infineon Cypress Semicon, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 CS input Active LOW chip select input that activates the device; when HIGH, device enters low-power standby mode, ignores inputs, and tristates output; falling edge required before each opcode.
2 SCK input Serial clock input from SPI master synchronized to all I/O activity; inputs latched on rising edge, outputs driven on falling edge; frequency range 0-20 MHz.
3 SI input Serial input (MOSI) for all data input to device; sampled on rising edge of SCK; must always be driven to valid logic level to meet IDD specifications.
4 VSS power_in Ground reference for the device; must be connected to system ground.
5 VDD power_in Positive power supply input; operating voltage range 4.5 V to 5.5 V.
6 SO output Serial output (MISO) data pin driven during read operations; remains tristated at all other times including when HOLD is LOW; data transitions on falling edge of serial clock.
7 WP input Active LOW write protect input; when WPEN is set to 1, prevents write operation to Status Register; must be tied to VDD if not used.
8 HOLD input HOLD input used when host CPU must interrupt a memory operation; when LOW with SCK LOW, current operation is suspended; all transitions must occur while SCK is LOW; must be tied to VDD if not used.

Key specifications

Parameter Value
Manufacturer Infineon Cypress Semicon
Package SOIC-8
Category Memory
Pins 8

CAD (KiCad official)

  • Symbol: FM25640B-GTR
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: fm25640b-gtr-etched.step / fm25640b-gtr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); fm25640b-gtr.step / fm25640b-gtr.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Infineon Cypress Semicon datasheet (22 pp, sha256 530c43c42a9f291f, retrieved 2026-10-22, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF