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23K256-E

Public Unreviewed

by Ray

Microchip Tech SRAM, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

Schematic Symbol

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PCB Footprint

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Datasheet

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Contents

README

markdown

23K256-E

Microchip Tech · SRAM · SOIC-8

23K256-E from Microchip Tech, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 CS input Active-low Chip Select input. Drive low to access the device; drive high to deselect and place SO in high-impedance. VIH = 0.7VCC min, VIL = 0.2VCC max (I-Temp).
2 SO output Serial Data Output. Shifts data out MSB-first on the falling edge of SCK. Hi-Z when CS is high or when HOLD is asserted. IOH = -400 uA at VOH = VCC-0.5 V; IOL = 1 mA at VOL = 0.2 V.
3 NC unconnected No internal connection. Leave floating or tie to any convenient net.
4 VSS power_in Ground / negative supply reference (0 V). All input/output logic levels are referenced to VSS.
5 SI input Serial Data Input. Instruction, address and write-data bits are latched on the rising edge of SCK, MSB-first.
6 SCK input Serial Clock input. Provides the timing reference for SPI transfers. Max FCLK = 20 MHz at VCC = 3.0 V (I-Temp), 16 MHz for E-Temp.
7 HOLD input Active-low Hold input. Pausing a serial transfer without deselecting the device: while HOLD is low, SI transitions are ignored and SO is Hi-Z. Must be high for normal operation; tie to VCC if unused.
8 VCC power_in Positive supply voltage. 23K256: 2.7 V to 3.6 V (23A256: 1.5 V to 1.95 V). Absolute max 4.5 V. Decouple with a 0.1 uF ceramic close to the pin.

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package SOIC-8
Category Memory
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • 23K256-E/P
  • 23K256-E/SN
  • 23K256-E/ST

CAD (KiCad official)

  • Symbol: 23K256-E
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: Microchip Tech datasheet (27 pp, sha256 1a538f1a3d69c987, retrieved 2026-08-17, 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