z8fmc16100 ZiLOG Semiconductor, z8fmc16100 Datasheet - Page 241

• Manufacturer Part Number: z8fmc16100
• Description: Z8 Encore Motor Control Flash Mcus
• Manufacturer: ZiLOG Semiconductor

Oscillator Control
PS024611-0408
Operation
System Clock Selection
The Z8FMC16100 Series Flash MCU uses three possible clocking schemes, each
user-selectable:
•
•
•
In addition, Z8FMC16100 Series Flash MCUs contain clock failure detection and recovery
circuitry, allowing continued operation despite any potential failure of the primary
oscillator.
The on-chip system clock frequency can be reduced through a clock divider allowing
reduced dynamic power dissipation. Flash memory can be powered down during portions
of the clock period when running slower than 10 MHz.
This section explains the logic used to select the system clock, divide down the system
clock, and handle oscillator failures. For the description of specific operation of each
oscillator, see
Precision Oscillator
The oscillator control block selects from the available clocks.
source and its usage.
Trimmable internal precision oscillator
On-chip oscillator using off-chip crystal/resonator or external clock driver
On-chip low precision Watchdog Timer oscillator
Watchdog Timer
on page 237.
on page 61,
On-Chip Oscillator
Z8FMC16100 Series Flash MCU
Table 129
Product Specification
on page 235, and
details each clock
Operation
Internal
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