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Contents

README

markdown

AT24CS04-SSHM-T

Microchip Tech · EEPROM · SOIC-8

AT24CS04-SSHM-T 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 NC unconnected No connect pin with no internal function stated on the 8-lead SOIC.
2 A1 input Device address input on the AT24CS04, hard-wired to GND or VCC to allow up to four devices on a bus, and internally pulled down to GND if left unconnected.
3 A2 input Device address input, hard-wired to GND or VCC, and internally pulled down to GND if left floating (a known state is recommended).
4 GND power_in Ground reference for the power supply, to be connected to system ground.
5 SDA bidirectional Open-drain bidirectional serial data pin that needs an external pull-up resistor (not to exceed 10 kΩ) and may be wire-ORed with other open-drain devices on the bus.
6 SCL input Serial clock input that latches command and input data on the rising edge and clocks output data out on the falling edge, and must be forced high or pulled high when the bus is idle.
7 WP input Write-protect input: GND allows normal writes, VCC inhibits all writes to the full protected array, and it is internally pulled down to GND if left floating.
8 VCC power_in Device power supply pin, operating from 1.7V to 5.5V.

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 VCC 1.7 5.5 V 9
Supply Current Read ICC1 0.4 1 mA VCC = 5.0V, Read at 400 kHz 9
Supply Current Write ICC2 2 3 mA VCC = 5.0V, Write at 400 kHz 9
Standby Current ISB 1 μA VCC = 1.7V, VIN = VCC or GND 9
Standby Current ISB 6 μA VCC = 5.5V, VIN = VCC or GND 9
Input Leakage Current ILI 0.1 3 μA VIN = VCC or GND 9
Output Leakage Current ILO 0.05 3 μA VOUT = VCC or GND 9
Input Low Level VIL -0.6 V Note 2 9
Output Low Level VOL1 0.2 V VCC = 1.7V, IOL = 0.15 mA 10
Output Low Level VOL2 0.4 V VCC = 3.0V, IOL = 2.1 mA 10
Clock Frequency, SCL (Fast Mode) fSCL 400 kHz VCC = 1.7V to 2.5V 10
Clock Frequency, SCL (Fast Mode Plus) fSCL 1000 kHz VCC = 2.5V to 5.5V 10
Clock Pulse Width Low (Fast Mode) tLOW 1200 ns VCC = 1.7V to 2.5V 10
Clock Pulse Width Low (Fast Mode Plus) tLOW 500 ns VCC = 2.5V to 5.5V 10
Clock Pulse Width High (Fast Mode) tHIGH 600 ns VCC = 1.7V to 2.5V 10
Clock Pulse Width High (Fast Mode Plus) tHIGH 400 ns VCC = 2.5V to 5.5V 10
Input Filter Spike Suppression (Fast Mode) tI 100 ns VCC = 1.7V to 2.5V 10
Input Filter Spike Suppression (Fast Mode Plus) tI 50 ns VCC = 2.5V to 5.5V 10
Clock Low to Data Out Valid (Fast Mode) tAA 100 900 ns VCC = 1.7V to 2.5V 10
Clock Low to Data Out Valid (Fast Mode Plus) tAA 50 450 ns VCC = 2.5V to 5.5V 10
Bus Free Time between Stop and Start (Fast Mode) tBUF 1300 ns VCC = 1.7V to 2.5V 10
Bus Free Time between Stop and Start (Fast Mode Plus) tBUF 500 ns VCC = 2.5V to 5.5V 10
Start Hold Time (Fast Mode) tHD.STA 600 ns VCC = 1.7V to 2.5V 10
Start Hold Time (Fast Mode Plus) tHD.STA 250 ns VCC = 2.5V to 5.5V 10
Start Set-up Time (Fast Mode) tSU.STA 600 ns VCC = 1.7V to 2.5V 10
Start Set-up Time (Fast Mode Plus) tSU.STA 250 ns VCC = 2.5V to 5.5V 10
Data In Hold Time (Fast Mode) tHD.DAT 0 ns VCC = 1.7V to 2.5V 10
Data In Hold Time (Fast Mode Plus) tHD.DAT 0 ns VCC = 2.5V to 5.5V 10
Data In Set-up Time (Fast Mode) tSU.DAT 100 ns VCC = 1.7V to 2.5V 10
Data In Set-up Time (Fast Mode Plus) tSU.DAT 100 ns VCC = 2.5V to 5.5V 10
Inputs Rise Time (Fast Mode) tR 300 ns VCC = 1.7V to 2.5V 10
Inputs Rise Time (Fast Mode Plus) tR 300 ns VCC = 2.5V to 5.5V 10
Inputs Fall Time (Fast Mode) tF 300 ns VCC = 1.7V to 2.5V 10
Inputs Fall Time (Fast Mode Plus) tF 100 ns VCC = 2.5V to 5.5V 10
Stop Set-up Time (Fast Mode) tSU.STO 600 ns VCC = 1.7V to 2.5V 10
Stop Set-up Time (Fast Mode Plus) tSU.STO 250 ns VCC = 2.5V to 5.5V 10
Data Out Hold Time (Fast Mode) tDH 50 ns VCC = 1.7V to 2.5V 10
Data Out Hold Time (Fast Mode Plus) tDH 50 ns VCC = 2.5V to 5.5V 10
Write Cycle Time (Fast Mode) tWR 5 ms VCC = 1.7V to 2.5V 10
Write Cycle Time (Fast Mode Plus) tWR 5 ms VCC = 2.5V to 5.5V 10
Time required after VCC is stable before the device can accept commands tPUP 100 µs 11
Power-on Reset Threshold Voltage VPOR 1.5 V 11
Minimum time at VCC = 0V between power cycles tPOFF 500 ms 11
Input/Output Capacitance (SDA) CI/O 8 pF VI/O = 0V 12
Input Capacitance (A1, A2 and SCL) CIN 6 pF VIN = 0V 12
Write Endurance 1e+06 Write Cycles TA = 25°C, VCC = 3.3V, Page Write mode 12
Data Retention 100 Years TA = 55°C 12
Temperature under bias -55 125 °C 9
Storage temperature -65 150 °C 9
VCC VCC 6.25 V 9
Voltage on any pin with respect to ground -1 7 V 9
DC output current 5 mA 9
ESD protection 4 kV >4 kV 9
Operating Temperature (Case), Industrial -40 85 °C Industrial Temperature Range 9

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 27

CAD (KiCad official)

  • Symbol: AT24CS04-SSHM-T
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: at24cs04-sshm-t-etched.step / at24cs04-sshm-t-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); at24cs04-sshm-t.step / at24cs04-sshm-t.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (43 pp, sha256 fe44cb2756a478b7, retrieved 2026-10-23, tier: lcsc)
  • 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