Overview
The COM78C804LJP is an UART made by Microchip Technology with 44 pins. Internal loopback/self-test mode、Automatic error detection - UART.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:COM78C804LJP, from EasyEDA) and its footprint (EasyEDA_Cloud:PLCC-44_L16.6-W16.6-P1.27-LS17.5-T-1, from EasyEDA), ready for a KiCad board. JLCPCB lists it (part C20437882).
Symbol
Footprint
Parameters
1- Features
- Internal loopback/self-test mode, Automatic error detection
Order codes
1- COM78C804LJPLCSC C20437882
Pinout
44| Pin | Name | Type |
|---|---|---|
| 1 | RXD2 | Unspecified |
| 2 | DCD2# | Unspecified |
| 3 | DSR2# | Unspecified |
| 4 | TXD2 | Unspecified |
| 5 | DL7 | Unspecified |
| 6 | DL6 | Unspecified |
| 7 | DL5 | Unspecified |
| 8 | DL4 | Unspecified |
| 9 | RDY# | Unspecified |
| 10 | RST# | Unspecified |
| 11 | VSS0 | Unspecified |
| 12 | CS# | Unspecified |
| 13 | WR# | Unspecified |
| 14 | DS# | Unspecified |
| 15 | DL3 | Unspecified |
| 16 | DL2 | Unspecified |
| 17 | DL1 | Unspecified |
| 18 | DL0 | Unspecified |
| 19 | TXD0 | Unspecified |
| 20 | DSR0# | Unspecified |
| 21 | DCD0# | Unspecified |
| 22 | RXD0# | Unspecified |
| 23 | RXD1 | Unspecified |
| 24 | DCD1# | Unspecified |
| 25 | DSR1# | Unspecified |
| 26 | TXD1 | Unspecified |
| 27 | VSS2 | Unspecified |
| 28 | VDD | Unspecified |
| 29 | IRQLN0 | Unspecified |
| 30 | IRQLN1 | Unspecified |
| 31 | TRQTXRX | Unspecified |
| 32 | IRQ# | Unspecified |
| 33 | ADD0 | Unspecified |
| 34 | ADD1 | Unspecified |
| 35 | ADD2 | Unspecified |
| 36 | ADD3 | Unspecified |
| 37 | ADD4 | Unspecified |
| 38 | MRST | Unspecified |
| 39 | CLK | Unspecified |
| 40 | VSS1 | Unspecified |
| 41 | TXD3 | Unspecified |
| 42 | DSR3# | Unspecified |
| 43 | DCD3# | Unspecified |
| 44 | RXD3 | Unspecified |
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Is there a KiCad symbol and footprint for the COM78C804LJP?
Yes. The symbol is EasyEDA_Cloud:COM78C804LJP and the footprint EasyEDA_Cloud:PLCC-44_L16.6-W16.6-P1.27-LS17.5-T-1, both drawn on this page. PCBKit places them on a board for you when you design with it.
Where is the COM78C804LJP datasheet?
Microchip Technology publishes it: the Datasheet link on this page opens it.
Where can I order the COM78C804LJP?
JLCPCB lists it as part C20437882, with 0 in stock; the sellers' links on this page open their listings.
What can replace the COM78C804LJP?
Parts like it in the library: the SCC68692E1A44529 by NXP Semiconductors, the PC16550DV by Texas Instruments, the PC16550DV/NOPB-TI by Texas Instruments and the PC16550DVX by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.
