S912XEG128J2VAL
Model | S912XEG128J2VAL |
Description | IC,MICROCONTROLLER,16-BIT,CPU12 CPU,CMOS,QFP,112PIN,PLASTIC |
PDF file | Total 1327 pages (File size: 7M) |
Chip Manufacturer | ROCHESTER |
Chapter 19 Pulse-Width Modulator (S12PWM8B8CV1)
Clock Source 7
PWMCNT6
PWCNT7
Because of an order from the United States International Trade Commission, BGA-packaged product lines and part numbers indicated here currently are not
available from Freescale for import or sale in the United States prior to September 2010: S12XE products in 208 MAPBGA packages
High
Low
Period/Duty Compare
PWM7
Clock Source 5
High
PWMCNT4
Low
PWCNT5
Period/Duty Compare
PWM5
Clock Source 3
High
PWMCNT2
Low
PWCNT3
Period/Duty Compare
PWM3
Clock Source 1
High
PWMCNT0
Low
PWCNT1
Period/Duty Compare
PWM1
Figure 19-24. PWM 16-Bit Mode
Once concatenated mode is enabled (CONxx bits set in PWMCTL register), enabling/disabling the
corresponding 16-bit PWM channel is controlled by the low order PWMEx bit. In this case, the high order
bytes PWMEx bits have no effect and their corresponding PWM output is disabled.
In concatenated mode, writes to the 16-bit counter by using a 16-bit access or writes to either the low or
high order byte of the counter will reset the 16-bit counter. Reads of the 16-bit counter must be made by
16-bit access to maintain data coherency.
MC9S12XE-Family Reference Manual Rev. 1.19
Freescale Semiconductor
719