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Ray Publish 0.1.0 f209571 7h ago

23K256-I

Microchip Tech · Pre-ordered MCUs · PDIP-8

23K256-I from Microchip Tech, in a PDIP-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 Chip Select input: a low level selects the device, a high level deselects it and forces Standby mode, and SO goes high-impedance when deselected.
2 SO tri_state Serial Data Output: data is shifted out after the falling edge of the serial clock, and it goes high-impedance when CS is high or HOLD is low.
3 NC unconnected No connection; shown as NC on the package diagram and not listed in the pin function table.
4 VSS power_in Ground.
5 SI input Serial Data Input: receives instructions, addresses and data, latched on the rising edge of the serial clock.
6 SCK input Serial Clock input: synchronizes communication, latching SI on the rising edge and updating SO after the falling edge, with a maximum clock of 20 MHz.
7 HOLD input Hold input: pulled low (while SCK is low) to pause serial communication without resetting the sequence, and it must be held high when not in use.
8 VCC power_in Supply voltage: 2.7V to 3.6V for the 23K256, with an absolute maximum of 4.5V.

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package PDIP-8
Category Embedded Processors & Controllers
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
Supply Voltage VCC 2.7 3.6 V 23K256 (I,E-Temp) 2
Low-Level Output Voltage VOL 0.2 V IOL = 1 mA 2
Input Leakage Current ILI -0.5 0.5 µA CS = VCC, VIN = VSS OR VCC 2
Output Leakage Current ILO -0.5 0.5 µA CS = VCC, VOUT = VSS OR VCC 2
Read Operating Current ICC 3 mA FCLK = 1 MHz; SO = O 2
Read Operating Current ICC 6 mA FCLK = 10 MHz; SO = O 2
Read Operating Current ICC 10 mA FCLK = 20 MHz; SO = O 2
Standby Current ICCS 1 4 µA CS = VCC = 3.6V, Inputs tied to VCC or VSS 2
Input Capacitance CINT 7 pF VCC = 0V, f = 1 MHz, Ta = +25°C 2
RAM Data Retention Voltage VDR 1.2 V Note 2 2
Clock Frequency FCLK 20 MHz VCC 3.0V (I-Temp) 3
CS Setup Time TCSS 25 ns VCC 3.0V (I-Temp) 3
CS Hold Time TCSH 50 ns VCC 3.0V (I-Temp) 3
CS Disable Time TCSD 25 ns VCC 3.0V (I-Temp) 3
Data Setup Time Tsu 10 ns VCC 3.0V (I-Temp) 3
Data Hold Time THD 10 ns VCC 3.0V (I-Temp) 3
CLK Rise Time TR 2 us Note 1 3
CLK Fall Time TF 2 us Note 1 3
Clock High Time THI 25 ns VCC 3.0V (I-Temp) 3
Clock Low Time TLO 25 ns VCC 3.0V (I-Temp) 3
Clock Delay Time TCLD 25 ns VCC 3.0V (I-Temp) 3
Output Valid from Clock Low TV 25 ns VCC 3.0V (I-Temp) 4
Output Hold Time THO 0 ns Note 1 4
Output Disable Time TDIS 20 ns VCC 3.0V (I-Temp) 4
HOLD Setup Time THS 10 ns 4
HOLD Hold Time THH 10 ns 4
HOLD Low to Output High-Z THZ 10 ns 4
HOLD High to Output Valid THV 50 ns 4
Input/Output Voltage w.r.t. VSS (lower limit) -0.3 V All inputs and outputs w.r.t. VSS; upper limit is VCC +0.3V 2
Storage Temperature -65 150 °C 2
Ambient Temperature Under Bias -40 125 °C 2
ESD Protection on All Pins 2 kV 2
Operating Temperature TA -40 85 °C Industrial (I) 2

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: 23K256-I
  • Footprint: Package_DIP:DIP-8_W7.62mm
  • 3D model: PDIP-8 (KiCad packages3D, STEP)
  • 3D model files: 23k256-i-etched.step / 23k256-i-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 23k256-i.step / 23k256-i.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (27 pp, sha256 1a538f1a3d69c987, retrieved 2026-10-31, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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