Z8F1680SH020SG Datasheet, PDF (151/412 Pages) Zilog, Inc. – High-Performance 8-Bit Microcontrollers

Z8 Encore! XP^® F1680 Series
Product Specification
126
10.5. Low-Power Modes
The Z8 Encore! XP F1680 Series of MCUs contains power-saving features. The highest
level of power reduction is provided by STOP Mode. The next level of power reduction is
provided by HALT Mode.
10.5.1. Operation in HALT Mode
When the eZ8 CPU is operating in HALT Mode, the Multi-Channel Timer will continue to
operate if enabled. To minimize current in HALT Mode, the Multi-Channel Timer must be
disabled by clearing the TEN control bit.
10.5.2. Operation in STOP Mode
When the eZ8 CPU is operating in STOP Mode, the Multi-Channel Timer ceases to
operate because the system clock has stopped. The registers are not reset and operation
will resume after Stop Mode Recovery occurs.
10.5.3. Power Reduction During Operation
Deassertion of the TEN bit will inhibit clocking of the entire Multi-Channel Timer block.
Deassertion of the CHEN bit of individual channels will inhibit clocking of channel-
specific logic to minimize power consumption of unused channels. The CPU can still read
and write to the registers when the enable bit(s) are deasserted.
10.6. Multi-Channel Timer Applications Examples
This section provides two brief examples that describe how the the F1680 Series multi-
channel timer can be used in your application.
10.6.1. PWM Programmable Deadband Generation
The count up/down mode supports motor control applications that require dead time
between output signals. Figure 17 displays dead time generation between two channels
operating in count up/down mode.
PS025015-1212
PRELIMINARY
Multi-Channel Timer