MC9S12G Datasheet, PDF (1017/1160 Pages) Freescale Semiconductor, Inc – Ignores external trigger. Performs one conversion sequence and stops.

192 KByte Flash Module (S12FTMRG192K2V1)
If a reset occurs while any Flash command is in progress, that command will be immediately aborted. The
state of the word being programmed or the sector/block being erased is not guaranteed.
MC9S12G Family Reference Manual, Rev.1.01
Freescale Semiconductor
1017
This document is valid for the S12G96 and the S12G128 device. All information related to other devices is preliminary.