
Table 1-7  COM Connector (J34) Pinout
| Pin | Signal Name | |
| 
 | 
 | |
| 1 | Connected to pins 4 and 6 through | |
| zero ohm resistors R55 and R56 | ||
| 
 | ||
| 
 | 
 | |
| 2 | TXD | |
| 
 | 
 | |
| 3 | RXD | |
| 
 | 
 | |
| 4 | Connected to pins 1 and 6 through | |
| zero ohm resistors R55 and R56 | ||
| 
 | ||
| 
 | 
 | |
| 5 | GND | |
| 
 | 
 | |
| 6 | Connected to pins 1 and 4 through | |
| zero ohm resistors R55 and R56 | ||
| 
 | ||
| 
 | 
 | |
| 7 | NC | |
| 
 | 
 | |
| 8 | NC | |
| 
 | 
 | |
| 9 | NC | |
| 
 | 
 | 
1.13 User Options
The DEMO9S08AC60E includes various user input and output devices to assist in application development and silicon evaluation. These devices include four pushbutton switches, a 10 LED light bar, 8 rocker switches, an accelerometer, a light sensor, and a potentiometer.
1.13.1 Pushbutton Switches
Four pushbutton switches provide momentary active low input for user applications. MCU port pins can be disconnected from these pushbutton
DEMO9S08AC60E User’s Guide, Rev. 0.1
| Freescale Semiconductor | 17 |