
Overview
The AT93C46DN-SH-T is an EEPROM made by Microchip Technology in a SOIC-8 package with 8 pins. -40℃~+85℃ 1,000,000 cycles 1.8V~5.5V 100 Years 1Kbit 2MHz 5ms Built-in power-on reset (POR)、Built-in write enable latch (WEL) SPI SOIC-8 EEPROM ROHS.
PCBKit's library has its KiCad symbol (AT93C46DN-SH-T:AT93C46DN-SH-T, from Antmicro) and its footprint (Package_SO:SOIC-8_3.9x4.9mm_P1.27mm, from KiCad's library), ready for a KiCad board. 71,449 are in stock at JLCPCB (part C6499). 9 open-source boards in 9 repositories on GitHub use it.
Symbol
Footprint
From the datasheet
11- Supply, least
- 1.8 V · VCC, recommended operating min · p. 8
- Supply, most
- 5.5 V · VCC, recommended operating max · p. 8
- Supply, absolute maximum
- 6.25 V · VCC, absolute max · p. 8
- Works from
- -40 °C · Ambient operating min · p. 9
- Works up to
- 85 °C · Ambient operating max · p. 9
- Takes working
- 500 µA · VCC read at 1 MHz, 5.0 V, typical · p. 8
- Takes at most
- 2 mA · VCC read at 1 MHz, 5.0 V, max · p. 8
- Takes asleep
- 400 nA · Standby at VCC = 1.8 V, CS = 0 V, typical · p. 8
- Takes asleep
- 6 µA · Standby at VCC = 2.7 V, CS = 0 V, typical · p. 8
- Takes asleep
- 10 µA · Standby at VCC = 5.0 V, CS = 0 V, typical · p. 8
- A pin gives at most
- 5 mA · DC output current, absolute max · p. 8
What it is and has
9- EEPROM capacity
- 1-Kbit, 128 x 8 or 64 x 16 · p. 1
- Memory organization
- User-selectable 128 x 8 or 64 x 16 · p. 1
- Interface
- Three-Wire Serial · p. 1
- Clock rate
- 2 MHz at 5V · p. 1
- Write cycle
- Self-timed, 5 ms maximum · p. 1
- Endurance
- 1,000,000 write cycles · p. 1
- Data retention
- 100 years · p. 1
- Package compliance
- Lead-free/Halide-free/RoHS compliant · p. 1
- Package options
- 8-Lead PDIP, 8-Lead SOIC, 8-Lead TSSOP, 8-Pad UDFN, 8-Ball VFBGA · p. 1
Specifications
56| Parameter | Conditions | As printed | Page |
|---|---|---|---|
| Temperature under bias | min -55 · max 125 °C | 8 | |
| Storage temperature | min -65 · max 150 °C | 8 | |
| VCC | max 6.25 V | 8 | |
| Voltage on any pin with respect to ground | min -1 · max 7 V | 8 | |
| DC output current | max 5 mA | 8 | |
| ESD protection | max 2 kV | 8 | |
| Operating Temperature (Case) | Industrial Temperature Range | min -40 · max 85 °C | 8 |
| VCC Power Supply | Low-Voltage Grade | min 1.8 · max 5.5 V | 8 |
| Supply Voltage VCC1 | min 1.8 · max 5.5 V | 8 | |
| Supply Voltage VCC2 | min 2.7 · max 5.5 V | 8 | |
| Supply Voltage VCC3 | min 4.5 · max 5.5 V | 8 | |
| Supply Current ICC1 | VCC = 5.0V, Read at 1 MHz | typ 0.5 · max 2 mA | 8 |
| Supply Current ICC2 | VCC = 5.0V, Write at 1 MHz | typ 0.5 · max 2 mA | 8 |
| Standby Current (1.8V Option) ISB1 | VCC = 1.8V, CS = 0V | typ 0.4 · max 1 uA | 8 |
| Standby Current (2.7V Option) ISB2 | VCC = 2.7V, CS = 0V | typ 6 · max 10 uA | 8 |
| Standby Current (5.0V Option) ISB3 | VCC = 5.0V, CS = 0V | typ 10 · max 15 uA | 8 |
| Input Leakage Current IIL | VIN = 0 to VCC | typ 0.1 · max 1 uA | 8 |
| Output Leakage Current ILO | VIN = 0 to VCC | typ 0.1 · max 1 uA | 8 |
| Input Low‑Voltage VIL1 | 2.7V ≤ VCC ≤ 5.5V (Note 2) | min -0.6 · max 0.8 V | 9 |
| Input High‑Voltage VIH1 | 2.7V ≤ VCC ≤ 5.5V (Note 2) | min 2 V | 9 |
| Input Low‑Voltage VIL2 | 1.8V ≤ VCC ≤ 2.7V (Note 2) | min -0.6 V | 9 |
| Output Low‑Voltage VOL1 | 2.7V ≤ VCC ≤ 5.5V, IOL = 2.1 mA | max 0.4 V | 9 |
| Output High‑Voltage VOH1 | 2.7V ≤ VCC ≤ 5.5V, IOH = -0.4 mA | min 2.4 V | 9 |
| Output Low‑Voltage VOL2 | 1.8V ≤ VCC ≤ 2.7V, IOL = 0.15 mA | max 0.2 V | 9 |
| Clock Frequency, SK fSK | 4.5V ≤ VCC ≤ 5.5V | min 0 · max 2 MHz | 9 |
| Clock Frequency, SK fSK | 2.7V ≤ VCC ≤ 5.5V | min 0 · max 1 MHz | 9 |
| Clock Frequency, SK fSK | 1.8V ≤ VCC ≤ 5.5V | min 0 · max 250 kHz | 9 |
| High Time, SK tSKH | 2.7V ≤ VCC ≤ 5.5V | min 250 ns | 9 |
| High Time, SK tSKH | 1.8V ≤ VCC ≤ 5.5V | min 1000 ns | 9 |
| Low Time, SK tSKL | 2.7V ≤ VCC ≤ 5.5V | min 250 ns | 9 |
| Low Time, SK tSKL | 1.8V ≤ VCC ≤ 5.5V | min 1000 ns | 9 |
| Minimum CS Low Time tCS | 2.7V ≤ VCC ≤ 5.5V | min 250 ns | 9 |
| Minimum CS Low Time tCS | 1.8V ≤ VCC ≤ 5.5V | min 1000 ns | 9 |
| CS Setup Time tCSS | 2.7V ≤ VCC ≤ 5.5V, Relative to SK | min 50 ns | 9 |
| CS Setup Time tCSS | 1.8V ≤ VCC ≤ 5.5V, Relative to SK | min 200 ns | 9 |
| DI Setup Time tDIS | 2.7V ≤ VCC ≤ 5.5V, Relative to SK | min 100 ns | 9 |
| DI Setup Time tDIS | 1.8V ≤ VCC ≤ 5.5V, Relative to SK | min 400 ns | 9 |
| CS Hold Time tCSH | Relative to SK | min 0 ns | 9 |
| DI Hold Time tDIH | 2.7V ≤ VCC ≤ 5.5V, Relative to SK | min 100 ns | 10 |
| DI Hold Time tDIH | 1.8V ≤ VCC ≤ 5.5V, Relative to SK | min 400 ns | 10 |
| Output Delay to 1 tPD1 | 2.7V ≤ VCC ≤ 5.5V | max 250 ns | 10 |
| Output Delay to 1 tPD1 | 1.8V ≤ VCC ≤ 5.5V | max 1000 ns | 10 |
| Output Delay to 0 tPD0 | 2.7V ≤ VCC ≤ 5.5V | max 250 ns | 10 |
| Output Delay to 0 tPD0 | 1.8V ≤ VCC ≤ 5.5V | max 1000 ns | 10 |
| CS to Status Valid tSV | 2.7V ≤ VCC ≤ 5.5V | max 250 ns | 10 |
| CS to Status Valid tSV | 1.8V ≤ VCC ≤ 5.5V | max 1000 ns | 10 |
| CS to DO in High‑Impedance tDF | 4.5V ≤ VCC ≤ 5.5V, CS = VIL | max 100 ns | 10 |
| CS to DO in High‑Impedance tDF | 2.7V ≤ VCC ≤ 5.5V, CS = VIL, AT93C46D | max 250 ns | 10 |
| CS to DO in High‑Impedance tDF | 1.8V ≤ VCC ≤ 5.5V, CS = VIL | max 400 ns | 10 |
| Write Cycle Time tWP | 1.8V ≤ VCC ≤ 5.5V | min 0.1 · typ 3 · max 5 ms | 10 |
| Time required after VCC is stable before the device can accept commands tPUP | min 100 us | 11 | |
| Power-on Reset Threshold Voltage VPOR | max 1.5 V | 11 | |
| Minimum time at VCC = 0V between power cycles tPOFF | min 500 ms | 11 | |
| Output Capacitance (DO) COUT | VOUT = 0V | max 5 pF | 11 |
| Input Capacitance (CS, SK, DI, ORG) CIN | VIN = 0V | max 5 pF | 11 |
| Data Retention | TA = 55°C | min 100 Years | 11 |
Pins, by the datasheet
8- 1 CS
- Chip Select; high selects the device. · p. 5
- 2 SK
- Serial Data Clock; input data is latched and output data is clocked on its rising edge. · p. 5
- 3 DI
- Serial Data Input for instructions, addresses and data. · p. 5
- 4 DO
- Serial Data Output; also provides Ready/Busy status after an erase or write operation. · p. 5
- 5 GND
- Ground reference; connect to system ground. · p. 5
- 6 ORG
- Internal Organization selection: connect to VCC for x16 or GND for x8; an unloaded floating pin selects x16 through the internal pull-up. · p. 6
- 7 NC
- No Connect. · p. 5
- 8 VCC
- Device Power Supply. · p. 5
Ordering codes, by the datasheet
8- AT93C46DN-SH-B
- SOIC · User-selectable organization; industrial temperature range; bulk (tubes) · p. 33
- AT93C46EN-SH-T
- SOIC · Fixed 16 X 64 organization; industrial temperature range; tape and reel · p. 33
- AT93C46E-TH-B
- TSSOP · Fixed 16 X 64 organization; industrial temperature range; bulk (tubes) · p. 33
- AT93C46D-TH-T
- TSSOP · User-selectable organization; industrial temperature range; tape and reel · p. 33
- AT93C46DY6-YH-T
- UDFN · User-selectable organization; industrial temperature range; tape and reel · p. 33
- AT93C46DY6-YH-E
- UDFN · User-selectable organization; industrial temperature range; extended quantity tape and reel · p. 33
- AT93C46E-PU
- PDIP · Fixed 16 X 64 organization; industrial temperature range; bulk (tubes) · p. 33
- AT93C46DU3-UU-T
- VFBGA · User-selectable organization; industrial temperature range; tape and reel · p. 33
Parameters
14- Clock Frequency
- 2MHz
- Current - Supply
- 500uA
- Data Retention - TDR (Year)
- 100 years
- Features
- Built-in power-on reset (POR)
- Interface
- SPI
- Memory Size
- 1Kbit
- Operating Current
- 2mA
- Operating Temperature
- -40℃~+85℃
- Output Current per Pin(Max)
- 5mA
- Standby Current
- 10uA
- Voltage - Supply
- 1.8V~5.5V
- Voltage - Supply(Absolute Max)
- 6.25V
- Write Cycle Endurance
- 1,000,000 cycles
- Write Cycle Time(Tw)
- 5ms
Order codes
1- AT93C46DN-SH-TLCSC C6499
Pinout
8| Pin | Name | Type |
|---|---|---|
| 1 | CS | Passive |
| 2 | SK | Passive |
| 3 | DI | Passive |
| 4 | DO | Passive |
| 5 | GND | Power in |
| 6 | ORG | Passive |
| 7 | NC | Not connected |
| 8 | VCC | Power in |
Open-source boards using it
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Design files and associated documentation for Sonata PCB, part of the Sunburst Project
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FrequnecyCounter
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FPGA based frequnecy counter hard- and software repository
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- 2 layers103.8 × 50.9 mm

FINAL final
PavitpalSingh2004/TRUESENSE_V2
TrueSense V2 is a compact high-speed reflection spectrometer using the Hamamatsu C12880MA, ESP32-S3, custom PCBs, high-speed ADC acquisition, FT2232H USB, Wi-Fi/UDP streaming, and a PyQt6 GUI for real-time spectrum…
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Namiashi
takarakasai/misa-usb-rs485-hub
4ch isolated USB-to-RS-485 hub board for humanoid robot motor control. FT4232HL + 2× ADM2582E + 2× CA-IS3098W, 5kV isolation, 920kbps-12Mbps, KiCad 10 / JLCPCB manufactured / verified working.
109 parts - 2 layers83.2 × 57.8 mm

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Is there a KiCad symbol and footprint for the AT93C46DN-SH-T?
Yes. The symbol is AT93C46DN-SH-T:AT93C46DN-SH-T and the footprint Package_SO:SOIC-8_3.9x4.9mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the AT93C46DN-SH-T?
SOIC-8, with 8 pins. Its footprint is drawn on this page.
Where is the AT93C46DN-SH-T datasheet?
Microchip Technology publishes it: the Datasheet link on this page opens it.
Where can I order the AT93C46DN-SH-T?
JLCPCB lists it as part C6499, with 71,449 in stock; the sellers' links on this page open their listings.
What can replace the AT93C46DN-SH-T?
Parts like it in the library: the AT93C66B-SSHM-T by Microchip Technology, the M93C66-WMN6TP by STMicroelectronics, the 93LC46BT-I/SN by Microchip Technology and the 93LC56B-I/SN by Microchip Technology. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the AT93C46DN-SH-T?
9 boards in 9 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
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