MC9S12Q128_10 Datasheet, PDF (349/644 Pages) Freescale Semiconductor, Inc – HCS12 Microcontrollers

Chapter 12 Pulse-Width Modulator (PWM8B4CRev 01.24) Block Description
12.2.4 PWM0 — Pulse Width Modulator Channel 0 Pin
This pin serves as waveform output of PWM channel 0.
12.3 Memory Map and Registers
This subsection describes in detail all the registers and register bits in the PWM8B4C module.
The special-purpose registers and register bit functions that would not normally be made available to
device end users, such as factory test control registers and reserved registers are clearly identified by means
of shading the appropriate portions of address maps and register diagrams. Notes explaining the reasons
for restricting access to the registers and functions are also explained in the individual register descriptions.
12.3.1 Module Memory Map
The following paragraphs describe the content of the registers in the PWM8B4C module. The base address
of the PWM8B4C module is determined at the MCU level when the MCU is defined. The register decode
map is fixed and begins at the first address of the module address offset.
Reserved bits within a register will always read as 0 and the write will be unimplemented. Unimplemented
functions are indicated by shading the bit.
Table 12-2 shows the memory map for the PWM8B4C module.
NOTE
Register address = base address + address offset, where the base address is
defined at the MCU level and the address offset is defined at the module
level.
Freescale Semiconductor
MC9S12Q128
349
Rev 1.10