Abov A96G166 - 17 Power down operation; 17.1 Peripheral operation in IDLE; STOP mode

A96G166/A96A166/A96S166 User’s manual 17. Power down operation
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17 Power down operation
A96G166/A96A166/A96S166 has two power-down modes to minimize the power consumption of the
device. In power down mode, power consumption is reduced considerably.
A96G166/A96A166/A96S166 provides three kinds of power saving functions such as Main-IDLE
mode, Sub-IDLE mode and STOP mode. During one of these three modes, program will be stopped.
17.1 Peripheral operation in IDLE/ STOP mode
Table 32 shows operation status of each peripheral in IDLE mode and STOP mode.
Table 32. Peripheral Operation Status during Power-down Mode
Peripheral
IDLE mode
STOP mode
CPU
ALL CPU operations are disabled.
ALL CPU operations are disabled.
RAM
Retains.
Retains.
Basic Interval Timer
Operates continuously.
Stops (can be operated with
WDTRC OSC).
Watch Dog Timer
Operates continuously.
Stops (can be operated with
WDTRC OSC).
Watch Timer
Operates continuously.
Stops (can be operated with sub
clock).
Timer0~2
Operates continuously.
Halts (only when the event counter
mode is enabled, timer operates
normally).
ADC
Operates continuously.
Stops.
BUZ
Operates continuously.
Stops.
USART 0/1
Operates continuously.
Only operates with external clock.
I2C
Operates continuously.
Stops.
Internal OSC
(32MHz)
Oscillates.
Stops when the system clock (fx) is
fHSI.
WDTRC OSC
(128kHz)
Can be operated with setting value.
Can be operated programmable.
Main OSC
(0.4 to 12MHz)
Oscillates.
Stops when fx = fXIN.
Sub OSC
(32.768kHz)
Oscillates.
Can be operated programmable.
I/O Port
Retains.
Retains.
Control Register
Retains.
Retains.