CB290
Pin description
| Pin | Name | I/O | Description |
|---|---|---|---|
| SOUT | 1 | OUT | DOWNLOAD SERIAL OUTPUT |
| SIN | 2 | IN | DOWNLOAD SERIAL INPUT |
| ATN | 3 | IN | DOWNLOAD SERIAL RESET (DTR) |
| VSS | 4 | POWER | GROUND |
| P0 | 5 | I/O | SPI SS |
| P1 | 6 | Input | SPI SCK |
| P2 | 7 | I/O | SPI MOSI |
| P3 | 8 | I/O | SPI MISO |
| P4 | 9 | I/O | |
| P5 | 10 | I/O | PWM0 |
| P6 | 11 | I/O | PWM1 |
| P7 | 12 | I/O | PWM2 |
| P8 | 25 | I/O | ADC0 : AD Channel 0 |
| P9 | 26 | I/O | ADC1 : AD Channel 1 |
| P10 | 27 | I/O | ADC2 : AD Channel 2 |
| P11 | 28 | I/O | ADC3 : AD Channel 3 |
| P12 | 29 | I/O | ADC4 : AD Channel 4 |
| P13 | 30 | I/O | ADC5 : AD Channel 5 |
| P14 | 31 | I/O | ADC6 : AD Channel 6 |
| P15 | 32 | I/O | ADC7 : AD Channel 7 |
| P16 | 83 | I/O | CUNET SCL |
| P17 | 84 | I/O | CUNET SDA |
| P18 | 85 | I/O | INT 2 |
| P19 | 86 | I/O | INT 3 |
| P20 | 97 | I/O | |
| P21 | 98 | I/O | |
| P22 | 99 | I/O | High Counter Channel 0 |
| P23 | 100 | I/O | High Counter Channel 1 |
| P24 ~ P55 | Output | Output only port | |
| P56 ~ P108 | Input | Input Only port | |
| P88 | 81 | N/C | do not use |
| P89 | 82 | I/O | PWM3 |
| P90 | 95 | I/O | PWM4 / INT0 |
| P91 | 96 | I/O | PWM5 / INT1 |
| VDD | 21,44 | IN | Input Power 5.1V~5.5V |
| VSS | 22,64 | IN | GROUND |
| RES | 23 | IN | Reset (Low Active) |
| VBB | 24 | IN | Battery backup VCC |
| TX1 | 41 | RS232 ch1, +/- 12V Tx | |
| RX1 | 42 | RS232 ch1, +/- 12V Rx | |
| AVDD | 43 | This pin Must be open | |
| TTLTX1 | 61 | RS232 ch1, 5V (TTL level) Tx | |
| TTLRX1 | 62 | RS232 ch1, 5V (TTL level) Rx | |
| AVREF | 63 | ADC reference voltage |