Chapter 8 Analog-to-Digital Converter (ATD10B8CV3)
MC9S12XDP512 Data Sheet, Rev. 2.11
372 Freescale Semiconductor

8.4.2.3 Low Power Modes

The ATD can be configured for lower MCU power consumption in 3 different ways:
1. Stop mode: This halts A/D conversion. Exit from stop mode will resume A/D conversion, but due
to the recovery time the result of this conversion should be ignored.
2. Wait mode with AWAI = 1: This halts A/D conversion. Exit from wait mode will resume A/D
conversion, but due to the recovery time the result of this conversion should be ignored.
3. Writing ADPU = 0 (Note that all ATD registers remain accessible.): This aborts any A/D
conversion in progress.
Note that the reset value for the ADPU bit is zero. Therefore, when this module is reset, it is reset into the
power down state.
8.5 Resets
At reset the ATD is in a power down state. The reset state of each individual bit is listed within the Register
Description section (see Section 8.3, “Memory Map and Register Definition”), which details the registers
and their bit-field.
8.6 Interrupts
The interrupt requested by the ATD is listed in Table 8-24. Refer to the device overview chapter for related
vector address and priority.
See register descriptions for further details.
Table 8-24. ATD Interrupt Vectors
Interrupt Source CCR
Mask Local Enable
Sequence complete
interrupt
I bit ASCIE in ATDCTL2