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MCS3142
Microchip KEELOQ classic / ultimate encoder - keyfob IC sending button state, serial and authentiation as PWM/manchester encoded AM/FM signal in ISM bands
Schematic Symbol
Pin Configuration (20 pins)
| Pin | Name | Type |
|---|---|---|
| 1 | VDD | power_in |
| 2 | SOSCI | input |
| 3 | SOSCO | output |
| 4 | SW3 | input |
| 5 | PGC | input |
| 6 | PGD | bidirectional |
| 7 | VSS | power_in |
| 8 | VDD | passive |
| 9 | CTRL_IN | input |
| 10 | RF_OUT | output |
| 11 | VSS | passive |
| 12 | DATA_IN | input |
| 13 | XTAL | input |
| 14 | CTRL_OUT | output |
| 15 | DATA_OUT | output |
| 16 | ~{LED} | output |
| 17 | SW2 | input |
| 18 | SW1 | input |
| 19 | SW0 | input |
| 20 | VSS | passive |
Footprint
ConfirmedPackage_SO/TSSOP-20_4.4x6.5mm_P0.65mm
Pad Layout
Pads (20)
| Number | Type |
|---|---|
| 1 | smd |
| 2 | smd |
| 3 | smd |
| 4 | smd |
| 5 | smd |
| 6 | smd |
| 7 | smd |
| 8 | smd |
| 9 | smd |
| 10 | smd |
| 11 | smd |
| 12 | smd |
| 13 | smd |
| 14 | smd |
| 15 | smd |
| 16 | smd |
| 17 | smd |
| 18 | smd |
| 19 | smd |
| 20 | smd |