80C32E
Idle and Power-down Idle mode allows the interrupt, serial port and timer blocks to continue to operate while
the clock of the CPU is gated off.
Operation
Power-down mode stops the oscillator.
Table 1. PCON Register
PCON – Power Control Register
7
6
-
5
-
4
-
3
2
1
0
SMOD
GF1
GF0
PD
IDL
Bit
Bit
Mnemonic Description
Number
Double Baud Rate bit
Set to select double baud rate in mode 1, 2 or 3.
7
6
5
4
SMOD
Reserved
The value read from this bit is indeterminate. Do not set this bit.
-
-
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
General-purpose Flag
Cleared by user for General-purpose usage.
Set by user for General-purpose usage.
3
2
1
0
GF1
GF0
PD
General-purpose Flag
Cleared by user for General-purpose usage.
Set by user for General-purpose usage.
Power-down mode bit
Cleared by hardware when reset occurs.
Set to enter power-down mode.
Idle mode bit
Clear by hardware when interrupt or reset occurs.
Set to enter idle mode.
IDL
Reset Value = 000X 0000
Not bit addressable
5
4149N–AERO–04/07
ATMEL [ ATMEL ]
