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23K640T-I
Public Made by Adomby adom
Microchip Tech SRAM, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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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README
markdown23K640T-I
Microchip Tech · SRAM · SOIC-8
23K640T-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, and a high level deselects it and forces it into Standby mode. |
| 2 | SO | output | Serial Data Output: data is shifted out after the falling edge of SCK, and SO goes to high-impedance when the device is deselected or HOLD is low. |
| 3 | NC | unconnected | Labeled NC on the pin diagram and not listed in the pin function table; the datasheet gives no function for this pin. |
| 4 | VSS | power_in | Ground reference for the device. |
| 5 | SI | input | Serial Data Input: receives instructions, addresses and data, latched on the rising edge of SCK. |
| 6 | SCK | input | Serial Clock input: SI is latched on the rising edge of SCK and SO is updated after the falling edge. |
| 7 | HOLD | input | Hold input: must be held high when unused, and pulling it low while SCK is low pauses serial communication and tri-states SO. |
| 8 | VCC | power_in | Supply voltage: 2.7 V to 3.6 V for the 23K640 (I and E temperature ranges), per parameter D001. |
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 |
|---|---|---|---|---|---|---|---|
| Supply voltage (23K640, I/E-Temp) | VCC | 2.7 | 3.6 | V | 23K640 (I, E-Temp) | 2 | |
| Low-level input voltage | VIL | -0.3 | V | 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, 1 MHz | ICC | 3 | mA | FCLK = 1 MHz; SO = O | 2 | ||
| Read operating current, 10 MHz | ICC | 6 | mA | FCLK = 10 MHz; SO = O | 2 | ||
| Read operating current, 20 MHz | ICC | 10 | mA | FCLK = 20 MHz; SO = O | 2 | ||
| Standby current (3.6V) | ICCS | 1 | 4 | µA | CS = VCC = 3.6V, Inputs tied to VCC or VSS | 2 | |
| Clock frequency (VCC 3.0V, I-Temp) | FCLK | 20 | MHz | VCC 3.0V (I-Temp) | 3 | ||
| CS setup time (VCC 3.0V, I-Temp) | TCSS | 25 | ns | VCC 3.0V (I-Temp) | 3 | ||
| CS hold time (VCC 3.0V, I-Temp) | TCSH | 50 | ns | VCC 3.0V (I-Temp) | 3 | ||
| CS disable time (VCC 3.0V, I-Temp) | TCSD | 25 | ns | VCC 3.0V (I-Temp) | 3 | ||
| Data setup time (VCC 3.0V, I-Temp) | Tsu | 10 | ns | VCC 3.0V (I-Temp) | 3 | ||
| Data hold time (VCC 3.0V, I-Temp) | 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 (VCC 3.0V, I-Temp) | THI | 25 | ns | VCC 3.0V (I-Temp) | 3 | ||
| Clock low time (VCC 3.0V, I-Temp) | TLO | 25 | ns | VCC 3.0V (I-Temp) | 3 | ||
| Clock delay time (VCC 3.0V, I-Temp) | TCLD | 25 | ns | VCC 3.0V (I-Temp) | 3 | ||
| Output valid from clock low (VCC 3.0V, I-Temp) | TV | 25 | ns | VCC 3.0V (I-Temp) | 3 | ||
| Output hold time | THO | 0 | ns | Note 1 | 3 | ||
| Output disable time (VCC 3.0V, I-Temp) | 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 | |||
| Voltage on all inputs and outputs | -0.3 | V | All inputs and outputs w.r.t. VSS | 2 | |||
| Storage temperature | -65 | 150 | °C | 2 | |||
| Ambient temperature under bias | -40 | 125 | °C | 2 | |||
| Ambient operating temperature (Industrial) | TA | -40 | 85 | °C | Industrial (I): TA = -40°C to +85°C | 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 | 2 |
CAD (KiCad official)
- Symbol:
23K640T-I - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
23k640t-i-etched.step/23k640t-i-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);23k640t-i.step/23k640t-i.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Microchip Tech datasheet (28 pp, sha256
6d7c5906b6bb39c0, retrieved 2026-10-30, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-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).