component

25LC320A-I

Public Made by Adom

by adom

Microchip Tech EEPROM, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentmemory25lc320a-ifactory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
25lc320a-i / README.md
History Download
Ray Publish 0.1.0 1bab2b7 11h ago

25LC320A-I

Microchip Tech · EEPROM · SOIC-8

25LC320A-I from Microchip Tech, 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; a high level deselects the device and forces it into Standby mode, and SO goes high-impedance when deselected.
2 SO output Serial Data Output that shifts data out after the falling edge of SCK during a read cycle and goes to high-impedance when the device is deselected or HOLD is low.
3 WP input Write-Protect input that, together with the WPEN bit in the STATUS register, disables writes to the nonvolatile STATUS register bits when low; the WP function is blocked when WPEN is low.
4 VSS power_in Ground reference pin for the device.
5 SI input Serial Data Input that receives instructions, addresses and data, latched on the rising edge of SCK.
6 SCK input Serial Clock input that synchronizes communication; SI is latched on its rising edge and SO is updated after its falling edge.
7 HOLD input Hold input that must be held high when not used; pulling it low while SCK is low pauses serial communication and tri-states SO without resetting the sequence.
8 VCC power_in Supply voltage pin; the device selection table lists a VCC range of 2.5V to 5.5V for this part.

Key specifications

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

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Low-Level Input Voltage VIL1 -0.3 V VCC ≥ 2.7V 3
Low-Level Output Voltage VOL1 0.4 V IOL = 2.1 mA 3
Low-Level Output Voltage VOL2 0.2 V IOL = 1.0 mA 3
Input Leakage Current ILI -2 2 µA CS = VCC, VIN = VSS or VCC 3
Output Leakage Current ILO -2 2 µA CS = VCC, VOUT = VSS or VCC 3
Internal Capacitance (all inputs and outputs) CINT 7 pF TA = 25°C, CLK = 1.0 MHz, VCC = 5.0V (Note 1) 3
Read Operating Current ICC 5 mA VCC = 5.5V; FCLK = 5.0 MHz; SO = Open 3
Read Operating Current ICC 2.5 mA VCC = 2.5V; FCLK = 3.0 MHz; SO = Open 3
Write Operating Current ICC 5 mA VCC = 5.5V 3
Write Operating Current ICC 3 mA VCC = 2.5V 3
Standby Current ICCS 10 µA CS = VCC = 5.5V, Inputs tied to VCC or VSS, +150°C 3
Clock Frequency FCLK 5 MHz 4.5V ≤ Vcc ≤ 5.5V 4
Clock Frequency FCLK 3 MHz 2.5V ≤ Vcc < 4.5V 4
CS Setup Time TCSS 100 ns 4.5V ≤ Vcc ≤ 5.5V 4
CS Setup Time TCSS 150 ns 2.5V ≤ Vcc < 4.5V 4
CS Hold Time TCSH 200 ns 4.5V ≤ Vcc ≤ 5.5V 4
CS Hold Time TCSH 250 ns 2.5V ≤ Vcc < 4.5V 4
CS Disable Time TCSD 50 ns 4
Data Setup Time TSU 20 ns 4.5V ≤ Vcc ≤ 5.5V 4
Data Setup Time TSU 30 ns 2.5V ≤ Vcc < 4.5V 4
Data Hold Time THD 40 ns 4.5V ≤ Vcc ≤ 5.5V 4
Data Hold Time THD 50 ns 2.5V ≤ Vcc < 4.5V 4
CLK Rise Time TR 2 µs Note 1 4
CLK Fall Time TF 2 µs Note 1 4
Clock High Time THI 100 ns 4.5V ≤ Vcc ≤ 5.5V 4
Clock High Time THI 150 ns 2.5V ≤ Vcc < 4.5V 4
Clock Low Time TLO 100 ns 4.5V ≤ Vcc ≤ 5.5V 4
Clock Low Time TLO 150 ns 2.5V ≤ Vcc < 4.5V 4
Clock Delay Time TCLD 50 ns 4
Clock Enable Time TCLE 50 ns 4
Output Valid from Clock Low TV 100 ns 4.5V ≤ Vcc ≤ 5.5V 4
Output Valid from Clock Low TV 160 ns 2.5V ≤ Vcc < 4.5V 4
Output Hold Time THO 0 ns Note 1 4
Output Disable Time TDIS 80 ns 4.5V ≤ Vcc ≤ 5.5V (Note 1) 4
Output Disable Time TDIS 160 ns 2.5V ≤ Vcc < 4.5V (Note 1) 4
HOLD Setup Time THS 40 ns 4.5V ≤ Vcc ≤ 5.5V 4
HOLD Setup Time THS 80 ns 2.5V ≤ Vcc < 4.5V 4
HOLD Hold Time THH 40 ns 4.5V ≤ Vcc ≤ 5.5V 4
HOLD Hold Time THH 80 ns 2.5V ≤ Vcc < 4.5V 4
HOLD Low to Output High-Z THZ 60 ns 4.5V ≤ Vcc ≤ 5.5V (Note 1) 4
HOLD Low to Output High-Z THZ 160 ns 2.5V ≤ Vcc < 4.5V (Note 1) 4
HOLD High to Output Valid THV 60 ns 4.5V ≤ Vcc ≤ 5.5V 4
HOLD High to Output Valid THV 160 ns 2.5V ≤ Vcc < 4.5V 4
Internal Write Cycle Time TWC 6 ms Note 2 4
Endurance 1 M E/W Cycles Page mode, +25°C, VCC = 5.5V (Note 3) 4
All inputs and outputs w.r.t. VSS -0.6 V 3
Storage temperature -65 155 °C 3
Ambient temperature under bias -40 150 °C Note 1 3
ESD protection on all pins 4 kV 3
Supply Voltage VCC 2.5 5.5 V Extended (H) grade operating range 3
Ambient Temperature (Extended H) TA -40 150 °C Extended (H) grade 3

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts tin 8-Lead Plastic Small Outline (SN) - Narrow, 3.90 mm (.150 In.) Body [SOIC] A A2 17

CAD (KiCad official)

  • Symbol: 25LC320A-I
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: 25lc320a-i-etched.step / 25lc320a-i-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 25lc320a-i.step / 25lc320a-i.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (25 pp, sha256 efe3b8bd1904622c, retrieved 2026-10-20, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF