component
23A256-I
Public Made by Adomby adom
Microchip Tech Pre-ordered MCUs, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Contents
README
markdown23A256-I
Microchip Tech · Pre-ordered MCUs · SOIC-8
23A256-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 | Chip Select input; a low level selects the device, a high level deselects it and forces Standby mode with SO high-impedance. |
| 2 | SO | tri_state | Serial Data Output; data is shifted out after the falling edge of SCK and the pin goes high-impedance when the device is deselected or held. |
| 3 | NC | unconnected | No connect; pin 3 is shown as NC in the package diagram and is not listed in the pin function table. |
| 4 | VSS | power_in | Ground. |
| 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 host communication, with SI latched on the rising edge and SO updated after the falling edge, up to 20 MHz maximum clock. |
| 7 | HOLD | input | Hold input that pauses serial communication without resetting the sequence when pulled low while SCK is low, and must be held high when not in use. |
| 8 | VCC | power_in | Supply voltage, 1.5V to 1.95V for the 23A256 (absolute maximum 4.5V). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | SOIC-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 | 1.5 | 1.95 | V | 23A256 (I-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 | ||
| Standby Current | ICCS | 0.2 | 1 | µA | CS = VCC = 1.8V, Inputs tied to VCC or VSS | 2 | |
| Input Capacitance | CINT | 7 | pF | VCC = 0V, f = 1 MHz, Ta = +25°C (Note 1) | 2 | ||
| RAM Data Retention Voltage | VDR | 1.2 | V | Note 2 | 2 | ||
| Clock Frequency | FCLK | 10 | MHz | VCC ≥ 1.5V (I-Temp) | 3 | ||
| Clock Frequency | FCLK | 16 | MHz | VCC ≥ 1.8V (I-Temp) | 3 | ||
| CS Setup Time | TCSS | 50 | ns | VCC ≥ 1.5V (I-Temp) | 3 | ||
| CS Setup Time | TCSS | 32 | ns | VCC ≥ 1.8V (I-Temp) | 3 | ||
| CS Hold Time | TCSH | 50 | ns | VCC ≥ 1.5V (I-Temp) | 3 | ||
| CS Disable Time | TCSD | 50 | ns | VCC ≥ 1.5V (I-Temp) | 3 | ||
| CS Disable Time | TCSD | 32 | ns | VCC ≥ 1.8V (I-Temp) | 3 | ||
| Data Setup Time | Tsu | 10 | ns | VCC ≥ 1.5V (I-Temp) | 3 | ||
| Data Hold Time | THD | 10 | ns | VCC ≥ 1.5V (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 | 50 | ns | VCC ≥ 1.5V (I-Temp) | 3 | ||
| Clock High Time | THI | 32 | ns | VCC ≥ 1.8V (I-Temp) | 3 | ||
| Clock Low Time | TLO | 50 | ns | VCC ≥ 1.5V (I-Temp) | 3 | ||
| Clock Low Time | TLO | 32 | ns | VCC ≥ 1.8V (I-Temp) | 3 | ||
| Clock Delay Time | TCLD | 50 | ns | VCC ≥ 1.5V (I-Temp) | 3 | ||
| Clock Delay Time | TCLD | 32 | ns | VCC ≥ 1.8V (I-Temp) | 3 | ||
| Output Valid from Clock Low | TV | 50 | ns | VCC ≥ 1.5V (I-Temp) | 4 | ||
| Output Valid from Clock Low | TV | 32 | ns | VCC ≥ 1.8V (I-Temp) | 4 | ||
| Output Hold Time | THO | 0 | ns | Note 1 | 4 | ||
| Output Disable Time | TDIS | 20 | ns | VCC ≥ 1.5V (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 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, Industrial | 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:
23A256-I - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
23a256-i-etched.step/23a256-i-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);23a256-i.step/23a256-i.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Microchip Tech datasheet (27 pp, sha256
1a538f1a3d69c987, retrieved 2026-10-23, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-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).