xc2234l-20f80l Infineon Technologies Corporation, xc2234l-20f80l Datasheet - Page 55

• Manufacturer Part Number: xc2234l-20f80l
• Description: Lim 16/32-bit Single-chip Microcontroller With 32-bit Performance Xc2000 Family / Econo Line
• Manufacturer: Infineon Technologies Corporation

PRELIMINARY
When clocked by
monitored.
When clocked by
monitored.
The default Watchdog Timer interval after power-up is 0.13 s (@
3.16
The Clock Generation Unit can generate the system clock signal
from a number of external or internal clock sources:
•
•
•
•
The programmable on-chip PLL with multiple prescalers generates a clock signal for
maximum system performance from standard crystals, a clock input signal, or from the
on-chip clock source. See also
The Oscillator Watchdog (OWD) generates an interrupt if the crystal oscillator frequency
falls below a certain limit or stops completely. In this case, the system can be supplied
with an emergency clock to enable operation even after an external clock failure.
All available clock signals can be output on the EXTCLK pin.
Data Sheet
External clock signals with pad voltage or core voltage levels
External crystal or resonator using the on-chip oscillator
On-chip clock source for operation without crystal/resonator
Wake-up clock (ultra-low-power) to further reduce power consumption
Clock Generation
f
f
WU
SYS
= 500 kHz, time intervals between 2.0 µs and 2147.5 s can be
= 80 MHz, time intervals between 12.5 ns and 13.4 s can be
Section
4.6.2.
51
XC2000 Family / Econo Line
Functional Description
f
XC2230L, XC2234L
SYS
f
WU
for the XC223[04]L
= 500 kHz).
V1.0, 2010-12