MC9S12G Datasheet, PDF (629/1160 Pages) Freescale Semiconductor, Inc – Ignores external trigger. Performs one conversion sequence and stops.

Serial Peripheral Interface (S12SPIV5)
19.4.7.5.2 SPIF
SPIF occurs when new data has been received and copied to the SPI data register. After SPIF is set, it does
not clear until it is serviced. SPIF has an automatic clearing process, which is described in
Section 19.3.2.4, “SPI Status Register (SPISR)”.
19.4.7.5.3 SPTEF
SPTEF occurs when the SPI data register is ready to accept new data. After SPTEF is set, it does not clear
until it is serviced. SPTEF has an automatic clearing process, which is described in Section 19.3.2.4, “SPI
Status Register (SPISR)”.
MC9S12G Family Reference Manual, Rev.1.01
Freescale Semiconductor
629
This document is valid for the S12G96 and the S12G128 device. All information related to other devices is preliminary.