MC9S12T64 Datasheet, PDF (272/608 Pages) Motorola, Inc – Specification

Freescale Semiconductor, Inc.
Clocks and Reset Generator (CRG)
Features
The main features of this block are:
• Crystal (or ceramic resonator) oscillator (OSC)
– User selectable Oscillator type: Colpitts (low power) or Pierce
– Clock Monitor (CM)
– Startup counter
• Phase Locked Loop (PLL) frequency multiplier
– Reference divider
– Automatic bandwidth control mode for low-jitter operation
– Automatic frequency lock detector
– CPU interrupt on entry or exit from locked condition
– Self clock mode in absence of reference clock
• System Clock Generator (CGEN)
– External clock mode
– Clock switch for either Oscillator or PLL based system clocks
– User selectable disabling of clocks during Wait Mode for
reduced power consumption.
• Computer Operating Properly (COP) Watchdog Timer with
time-out clear window.
• System Reset generation from the following possible sources
– Power on reset
– COP reset
– Loss of clock reset
– External pin reset
• Real-Time Interrupt (RTI)
MC9S12T64Revision 1.1.1
Clocks and Reset Generator (CRG)
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