XC886/888CLM
Power Saving Modes
User’s Manual
8-5
V1.3, 2010-02
Power Saving Modes, V 1.0
8.1.4
Peripheral Clock Management
The amount of reduction in power consumption that can be achieved by this feature
depends on the number of peripherals running. Peripherals that are not required for a
particular functionality can be disabled by gating off the clock inputs. For example, in idle
mode, if all timers are stopped, and ADC, CCU6, CORDIC, MDU, MultiCAN and the
serial interfaces are not running, maximum power reduction can be achieved. However,
the user must take care when determining which peripherals should continue running
and which must be stopped during active and idle modes.
The ADC, SSC, CCU6, CORDIC, MDU, MultiCAN, UART1, Timer 2 and Timer 21 can
be disabled (clock is gated off) by setting the corresponding bit in the PMCON1 register.
Furthermore, the analog part of the ADC module may be disabled by resetting the
GLOBCTR.ANON bit. This feature causes the generation of
f
ADCI
to be stopped and
allows a reduction in power consumption when no conversion is needed.
In order to save power consumption when the on-chip oscillator is used, XTAL should be
powered down by setting bit OSC_CON.XPD. When the external oscillator is used, the
on-chip oscillator can be powered down by setting bit OSC_CON.OSCPD.
8.2
Register Description
PMCON0
Power Mode Control Register 0
Reset Value: 00
H
1)
1)
The reset value for watchdog timer reset is 40
H
and the reset value for power-down wake-up reset is 20
H
.
7
6
5
4
3
2
1
0
0
WDTRST
WKRS
WKSEL
SD
PD
WS
r
rwh
rwh
rw
rw
rwh
rw
Field
Bits
Type Description
WS
[1:0]
rw
Wake-up Source Select
00
No wake-up is selected.
01
Wake-up source RXD (falling edge trigger) is
selected.
10
Wake-up source EXINT0 (falling edge trigger)
is selected.
11
Wake-up source RXD (falling edge trigger) or
EXINT0 (falling edge trigger) is selected.
*
Содержание XC886CLM
Страница 1: ...User s Manual V1 3 2010 02 Microcontrollers 8 Bit XC886 888CLM 8 Bit Single Chip Microcontroller...
Страница 3: ...User s Manual V1 3 2010 02 Microcontrollers 8 Bit XC886 888CLM 8 Bit Single Chip Microcontroller...
Страница 324: ...XC886 888CLM Serial Interfaces User s Manual 12 52 V1 3 2010 02 Serial Interfaces V 1 0...
Страница 663: ...w w w i n f i n e o n c o m Published by Infineon Technologies AG...