MC9S12G Datasheet, PDF (632/1160 Pages) Freescale Semiconductor, Inc – Ignores external trigger. Performs one conversion sequence and stops.

Timer Module (TIM16B8CV3)
• Clock prescaling.
• 16-bit counter.
• 16-bit pulse accumulator on channel 7 if channel 7 exists.
20.1.2
Stop:
Freeze:
Wait:
Normal:
Modes of Operation
Timer is off because clocks are stopped.
Timer counter keeps on running, unless TSFRZ in TSCR1 is set to 1.
Counters keeps on running, unless TSWAI in TSCR1 is set to 1.
Timer counter keep on running, unless TEN in TSCR1 is cleared to 0.
MC9S12G Family Reference Manual, Rev.1.01
632
Freescale Semiconductor
This document is valid for the S12G96 and the S12G128 device. All information related to other devices is preliminary.