| UMBC | CMSC 391 -- Programming Microcontrollers |
| Bit | PCON Bit Function |
|---|---|
| 7 | SMOD -- Serial baud modify bit. Set to 1 by program to double baud rate using timer 1 for modes 1, 2, and 3. Cleared to 0 by program to use timer 1 baud rate. |
| 6 | -- Not implemented. |
| 5 | -- Not implemented. |
| 4 | -- Not implemented. |
|
3 |
General purpose user flag bit 1. Set/cleared by program. |
| 2 | General purpose user flag bit 0. Set/cleared by program. |
| 1 | Power down bit. Set to 1 by program to enter power down configuration for CHMOS processors. |
| 0 | Idle mode bit. Set to 1 by program to enter idle mode configuration for CHMOS processors. |
PCON is not bit addressable.
Direct Byte Address is 87h.