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Add SparkFun FT231X Breakout board implementation with USB Micro-B connector #247

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Add SparkFun FT231X Breakout board implementation with USB Micro-B connector #247

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231 changes: 231 additions & 0 deletions boards/SparkFun-FT231X-Breakout/FT231X.tsx
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import type { ChipProps } from "@tscircuit/props"

// FT231X - USB to Full Handshake UART IC (SSOP-20 package)
const pinLabels = {
pin1: ["RESET"],
pin2: ["OSCO"],
pin3: ["OSCI"],
pin4: ["GND1"],
pin5: ["TXD"],
pin6: ["RXD"],
pin7: ["RTS"],
pin8: ["CTS"],
pin9: ["CBUS2"],
pin10: ["CBUS1"],
pin11: ["GND2"],
pin12: ["VCC"],
pin13: ["V3_3"],
pin14: ["USBDP"],
pin15: ["USBDM"],
pin16: ["V3_3OUT"],
pin17: ["GND3"],
pin18: ["CBUS0"],
pin19: ["CBUS3"],
pin20: ["DTR"],
} as const

export const FT231X = (props: ChipProps<typeof pinLabels>) => {
return (
<chip
pinLabels={pinLabels}
supplierPartNumbers={{
jlcpcb: ["C14010"],
}}
manufacturerPartNumber="FT231XS-R"
footprint={
<footprint>
{/* SSOP-20 package - 0.65mm pitch, 5.3mm x 6.2mm body */}
{/* Left side pins (1-10) */}
<smtpad
portHints={["pin1"]}
pcbX="-3.4mm"
pcbY="2.925mm"
width="1.6mm"
height="0.4mm"
shape="rect"
/>
<smtpad
portHints={["pin2"]}
pcbX="-3.4mm"
pcbY="2.275mm"
width="1.6mm"
height="0.4mm"
shape="rect"
/>
<smtpad
portHints={["pin3"]}
pcbX="-3.4mm"
pcbY="1.625mm"
width="1.6mm"
height="0.4mm"
shape="rect"
/>
<smtpad
portHints={["pin4"]}
pcbX="-3.4mm"
pcbY="0.975mm"
width="1.6mm"
height="0.4mm"
shape="rect"
/>
<smtpad
portHints={["pin5"]}
pcbX="-3.4mm"
pcbY="0.325mm"
width="1.6mm"
height="0.4mm"
shape="rect"
/>
<smtpad
portHints={["pin6"]}
pcbX="-3.4mm"
pcbY="-0.325mm"
width="1.6mm"
height="0.4mm"
shape="rect"
/>
<smtpad
portHints={["pin7"]}
pcbX="-3.4mm"
pcbY="-0.975mm"
width="1.6mm"
height="0.4mm"
shape="rect"
/>
<smtpad
portHints={["pin8"]}
pcbX="-3.4mm"
pcbY="-1.625mm"
width="1.6mm"
height="0.4mm"
shape="rect"
/>
<smtpad
portHints={["pin9"]}
pcbX="-3.4mm"
pcbY="-2.275mm"
width="1.6mm"
height="0.4mm"
shape="rect"
/>
<smtpad
portHints={["pin10"]}
pcbX="-3.4mm"
pcbY="-2.925mm"
width="1.6mm"
height="0.4mm"
shape="rect"
/>

{/* Right side pins (11-20) */}
<smtpad
portHints={["pin11"]}
pcbX="3.4mm"
pcbY="-2.925mm"
width="1.6mm"
height="0.4mm"
shape="rect"
/>
<smtpad
portHints={["pin12"]}
pcbX="3.4mm"
pcbY="-2.275mm"
width="1.6mm"
height="0.4mm"
shape="rect"
/>
<smtpad
portHints={["pin13"]}
pcbX="3.4mm"
pcbY="-1.625mm"
width="1.6mm"
height="0.4mm"
shape="rect"
/>
<smtpad
portHints={["pin14"]}
pcbX="3.4mm"
pcbY="-0.975mm"
width="1.6mm"
height="0.4mm"
shape="rect"
/>
<smtpad
portHints={["pin15"]}
pcbX="3.4mm"
pcbY="-0.325mm"
width="1.6mm"
height="0.4mm"
shape="rect"
/>
<smtpad
portHints={["pin16"]}
pcbX="3.4mm"
pcbY="0.325mm"
width="1.6mm"
height="0.4mm"
shape="rect"
/>
<smtpad
portHints={["pin17"]}
pcbX="3.4mm"
pcbY="0.975mm"
width="1.6mm"
height="0.4mm"
shape="rect"
/>
<smtpad
portHints={["pin18"]}
pcbX="3.4mm"
pcbY="1.625mm"
width="1.6mm"
height="0.4mm"
shape="rect"
/>
<smtpad
portHints={["pin19"]}
pcbX="3.4mm"
pcbY="2.275mm"
width="1.6mm"
height="0.4mm"
shape="rect"
/>
<smtpad
portHints={["pin20"]}
pcbX="3.4mm"
pcbY="2.925mm"
width="1.6mm"
height="0.4mm"
shape="rect"
/>

{/* Silkscreen body outline */}
<silkscreenpath
route={[
{ x: -2.65, y: 3.3 },
{ x: 2.65, y: 3.3 },
{ x: 2.65, y: -3.3 },
{ x: -2.65, y: -3.3 },
{ x: -2.65, y: 3.3 },
]}
/>
{/* Pin 1 indicator */}
<silkscreencircle pcbX="-2.2" pcbY="3.6" radius={0.2} />
</footprint>
}
schPortArrangement={{
leftSide: {
direction: "top-to-bottom",
pins: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
},
rightSide: {
direction: "bottom-to-top",
pins: [11, 12, 13, 14, 15, 16, 17, 18, 19, 20],
},
}}
schWidth={1.5}
schHeight={3}
{...props}
/>
)
}
64 changes: 64 additions & 0 deletions boards/SparkFun-FT231X-Breakout/README.md
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# SparkFun FT231X Breakout

A tscircuit implementation of the SparkFun FT231X Breakout board (BOB-13263).

## Description

The SparkFun FT231X Breakout is a USB-to-Serial adapter built around the FTDI FT231X chip. Unlike basic FTDI adapters, this board breaks out all pins for full UART hardware handshaking support.

## Features

- **FT231X IC**: Full-speed USB to asynchronous serial UART interface
- **Micro-B USB Connector**: Standard USB interface
- **Full Hardware Handshaking**: RTS, CTS, DTR, DSR, DCD, RI signals
- **Arduino Compatible**: Standard 6-pin header (DTR, RXI, TXO, VCC, CTS, GND)
- **TX/RX LEDs**: Visual indication of serial activity
- **3.3V/5V Selectable**: Voltage flexibility for different logic levels
- **5V Tolerant I/O**: Safe interfacing with various logic levels

## Pin Headers

### JP1 - Arduino Compatible Header
| Pin | Function |
|-----|----------|
| 1 | DTR |
| 2 | RXI |
| 3 | TXO |
| 4 | VCC |
| 5 | CTS |
| 6 | GND |

### JP2 - Extended UART Header
| Pin | Function |
|-----|----------|
| 1 | RTS |
| 2 | RXO |
| 3 | TXI |
| 4 | RI |
| 5 | DSR |
| 6 | DCD |
| 7 | GND |

## Components

- U1: FT231X (SSOP-20)
- USB: Micro-B USB Connector
- F1: 500mA Polyfuse
- R1, R2: 330Ω LED resistors
- LED1: TX LED (Green)
- LED2: RX LED (Yellow)
- C1-C4: Decoupling capacitors

## Usage

```tsx
import { SparkFunFT231XBreakout } from "./boards/SparkFun-FT231X-Breakout"

export default () => <SparkFunFT231XBreakout />
```

## Reference

- [SparkFun Product Page](https://www.sparkfun.com/products/13263)
- [FT231X Datasheet](http://cdn.sparkfun.com/datasheets/Components/General%20IC/DS_FT231X.pdf)
- [Schematic](http://cdn.sparkfun.com/datasheets/BreakoutBoards/ft231x-breakout-v11.pdf)
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