Z8 ENCO RE!
®
F 0 830 & F 083A SER IES FLAS H MC Us
COS T- EFFI CIEN T 8- BIT FLA S H S OLUT IONS
EMBEDDED FLASH SOLUTIONS
F0830 & F083A Series Flash Controller Detailed Feature Set (continued...)
timers
The Z8 Encore! F0830 & F083A Series devices contain up to two 16-bit re-loadable timers that are used for
timing, event counting, or generation of pulse width modulated (PWM) signals. The timers features include:
• 16-bit reload counter
• Programmable prescaler with prescale values ranging from 1 to 128
• PWM output generation
• Capture and compare capability
• External input pin for timer input, clock gating, or capture signal. External input pin signal frequency
is limited to a maximum of one-fourth the system clock frequency
• Timer output pin
• Timer interrupt
oscillator controls & available options
The Z8 Encore! F0830 & F083A Series devices use five possible clocking schemes. Each one of these is user
selectable.
• On-chip Internal Precision Oscillator
• On-chip oscillator using off-chip crystal or resonator
• On-chip oscillator using external RC network
• External clock drive
• On-chip low precision Watchdog Timer Oscillator
In addition, all devices contain clock failure detection and recovery circuitry, allowing continued operation de-
spite a failure of the primary oscillator.
internal precision oscillator
The internal precision oscillator (IPO) is designed for use without external components. You either manually
trim the oscillator for a non-standard frequency or use the automatic factory trimmed version to achieve up to a
20 MHz frequency with ± 4% accuracy and 45%~55% duty cycle over the operating temperature and supply
voltage of the device (available on the F083A devices only; the IPO frequency available for the F0830 is
5.5 MHz with ± 4% accuracy) . The IPO features include:
• On-chip RC oscillator that does not require external components
• Output frequency of either 20 MHz or 5.5 MHz (contains both a FAST and a SLOW mode)
• Trimming possible through Flash option bits with user override
• Elimination of crystals or ceramic resonators in applications where high timing accuracy is not
required
on-chip debugger interface
The Z8 Encore! F0830 and F083A Series devices both contain an integrated On-Chip Debugger (OCD) that
provides the following advanced debugging features:
• Reading and writing of the Register File
• Reading and writing of program and data memory
• Setting of breakpoints and watch points
• Executing eZ8
TM
CPU instructions
PB020809-0408
3
key hardware features
• timers
• oscillator controls
• ipo
available interfaces
• on-chip debugger
(9 paginas)
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