====== CB220/320 ======

{{ :cubloc:cb220_320.png?nolink |}}

===== Pin description =====

^ Pin  ^ Name  ^ I/O    ^ Description               ^
| 1    | SOUT  | OUT    | DOWNLOAD SERIAL OUTPUT    |
| 2    | SIN   | IN     | DOWNLOAD SERIAL INPUT     |
| 3    | ATN   | IN     | DOWNLOAD SERIAL RESET (DTR)     |
| 4    | VSS   | POWER  | GROUND                    |
| 5    | P0    | I/O    | ADC0 / SPI SS             |
| 6    | P1    | Input  | ADC1 / SPI SCK            |
| 7    | P2    | I/O    | ADC2 / SPI MOSI           |
| 8    | P3    | I/O    | ADC3 / SPI MISO           |
| 9    | P4    | I/O    | ADC4                      |
| 10   | P5    | I/O    | PWM0 / ADC5               |
| 11   | P6    | I/O    | PWM1 / ADC6               |
| 12   | P7    | I/O    | PWM2 / ADC7               |
| 13   | P8    | I/O    | CuNET SCL                 |
| 14   | P9    | I/O    | CuNET SDA                 |
| 15   | P10   | I/O    | RS232C Channel 1 RX       |
| 16   | P11   | I/O    | RS232C Channel 1 TX       |
| 17   | P12   | I/O    |                           |
| 18   | P13   | I/O    |                           |
| 19   | P14   | I/O    | High Counter Channel 0    |
| 20   | P15   | I/O    | High Counter Channel 1    |
| 21   | VDD   | I/O    | 5V Output / Input         |
| 22   | RES   | IN     | RESET input (Active Low)  |
| 23   | VSS   | IN     | GROUND                    |
| 24   | VIN   | IN     | 5.5V~12V Input Power      |

===== Spare I/O Pin =====

^Name ^I/O ^Desription^
|P18 |I/O | |
|P19 |I/O |PWM3|
|P20 |I/O |PWM4 / INT0|
|P21 |I/O |PWM5 / INT1|
|P22 |I/O |INT2|
|P23 |I/O |INT3|

===== Additional Information =====

SIN, SOUT, ATN are RS-232 communication pins used to interface with a PC
for downloading, debugging, monitoring, and serial communication. All
Cubloc models have SOUT, SIN, and ATN pins and are connected to a DB-9
connector (PC serial port) as shown below.

{{:cubloc:downloadsignals.png?400|}}

Other pins are mostly I/O ports.  The user may select which ports (pins) to use as INPUT or OUTPUT.   When set to INPUT, the pin enters a high-impedance state; when set to OUTPUT, the pin either outputs logic-low or logic-high.  The maximum current (source/sink) available from the output ports is 25mA.  The user is free to choose which I/O ports he/she will use for which purpose (such as ADC, PWM, etc...).



[[cubloc:index|CUBLOC - Embedded Controller]]