2 layers85 × 94.5 mm
Digital voltages ps
zachrjt/digital-voltages-ps
Fixed 3.3V and 5V voltage power supply with voltage and current readout
79 parts2
Overview
The 25LC640-E/P is an EEPROM made by Microchip Technology in a PDIP-8 package with 8 pins. -40℃~+125℃ 2.5V~5.5V 3MHz 5ms 64Kbit PDIP-8 EEPROM ROHS.
PCBKit's library has its KiCad symbol (Memory_EEPROM:25LCxxx, from KiCad's library) and its footprint (Package_DIP:DIP-8_W8.89mm_SMDSocket_LongPads, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C1350956). 5 open-source boards in 5 repositories on GitHub use it.
Symbol
Footprint
Parameters
12- Access Time
- 150ns
- Clock Frequency
- 3MHz
- Data Retention - TDR (Year)
- 200 Years
- Features
- Hardware write protection function, Built-in write enable latch (WEL), Power-down/Power-up protection circuit
- Interface
- SPI
- Memory Size
- 64Kbit
- Operating Current
- 3mA
- Operating Temperature
- -40℃~+125℃
- Standby Current
- 5uA
- Voltage - Supply
- 4.5V~5.5V
- Write Cycle Endurance
- 1,000,000 cycles
- Write Cycle Time(Tw)
- 5ms
Order codes
2- 25LC640-E/PLCSC C1350956
- 25LC640-E/PLCSC C613810
Pinout
8| Pin | Name | Type |
|---|---|---|
| 1 | CS | Input |
| 2 | MISO | Tri-state |
| 3 | WP | Input |
| 4 | GND | Power in |
| 5 | MOSI | Input |
| 6 | SCK | Input |
| 7 | HOLD | Input |
| 8 | VCC | Power in |
Open-source boards using it
All 5- 2 layers94 × 55 mm
Avr basic sbc
bazsimarkus/avr-basic-sbc
An ATmega1284P-based single board computer with composite video output, PS/2 keyboard input, running Tiny BASIC.
38 parts - 2 layers130 × 105 mm
- 2 layers
- 2 layers151 × 131 mm
Show this part on your page
<iframe src="https://pcbkit.io/embed/parts/microchip/25LC640-E/P" title="25LC640-E/P in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/microchip/25LC640-E/P.jpg" alt="25LC640-E/P" width="1200" height="900">[](https://pcbkit.io/parts/microchip/25LC640-E/P)Questions
Is there a KiCad symbol and footprint for the 25LC640-E/P?
Yes. The symbol is Memory_EEPROM:25LCxxx and the footprint Package_DIP:DIP-8_W8.89mm_SMDSocket_LongPads, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the 25LC640-E/P?
PDIP-8, with 8 pins. Its footprint is drawn on this page.
Where is the 25LC640-E/P datasheet?
Microchip Technology publishes it: the Datasheet link on this page opens it.
Where can I order the 25LC640-E/P?
JLCPCB lists it as part C1350956, with 0 in stock; the sellers' links on this page open their listings.
What can replace the 25LC640-E/P?
Parts like it in the library: the 93LC46B-I/P by Microchip Technology, the 25C040-I/P by Microchip Technology, the 93C66B-I/P by Microchip Technology and the 93C66C-I/P by Microchip Technology. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the 25LC640-E/P?
5 boards in 5 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
8
93LC46B-I/P
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PDIP-8-40℃~+85℃ 1,000,000 cycles 200 Years 3MHz 4.5V~5.5V 4Kbit 5ms Hardware write protection function、Built-in write enable latch (WEL)、Power-down/Power-up protection circuit SPI PDIP-8 EEPROM ROHSMicrochip TechnologyEEPROM93C66B-I/P
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PDIP-8-40℃~+85℃ 1,000,000 cycles 1.8V~5.5V 200 Years 3MHz 4Kbit 6ms SPI Software write protection function、Built-in write enable latch (WEL)、Power-down/Power-up protection circuit PDIP-8 EEPROM ROHSMicrochip TechnologyEEPROM93C56B-I/P
PDIP-8-40℃~+85℃ 1,000,000 cycles 200 Years 2Kbit 2ms 3MHz 4.5V~5.5V Built-in write enable latch (WEL)、Power-down/Power-up protection circuit SPI PDIP-8 EEPROM ROHSMicrochip TechnologyEEPROM93C86C-I/P
PDIP-8-40℃~+85℃ 1,000,000 cycles 16Kbit 200 Years 2ms 3MHz 4.5V~5.5V Hardware write protection function、Built-in write enable latch (WEL)、Power-down/Power-up protection circuit SPI PDIP-8 EEPROM ROHSMicrochip TechnologyEEPROM