XC908AS60ACFU Motorola Semiconductor Products, XC908AS60ACFU Datasheet - Page 467

• Manufacturer Part Number: XC908AS60ACFU
• Description: MC68HC908AZ60A, MC68HC908AS60A Hcmos Microcontroller Unit Technical Data
• Manufacturer: Motorola Semiconductor Products

25.9.5 TIMA Channel Registers
MC68HC908AZ60A — Rev 2.0
MOTOROLA
CHxMAX — Channel x Maximum Duty Cycle Bit
These read/write registers contain the captured TIMA counter value of
the input capture function or the output compare value of the output
compare function. The state of the TIMA channel registers after reset is
unknown.
In input capture mode (MSxB–MSxA = 0:0) reading the high byte of the
TIMA channel x registers (TACHxH) inhibits input captures until the low
byte (TACHxL) is read.
In output compare mode (MSxB–MSxA ≠ 0:0) writing to the high byte of
the TIMA channel x registers (TACHxH) inhibits output compares and
the CHxF bit until the low byte (TACHxL) is written.
PTEx/TCHx
CHxMAX
When the TOVx bit is at logic 1, setting the CHxMAX bit forces the
duty cycle of buffered and unbuffered PWM signals to 100%. As
Figure 25-8
is set or cleared. The output stays at the 100% duty cycle level until
the cycle after CHxMAX is cleared.
OVERFLOW
Timer Interface Module A (TIMA)
COMPARE
shows, the CHxMAX bit takes effect in the cycle after it
PERIOD
OUTPUT
Figure 25-8. CHxMAX Latency
OVERFLOW
COMPARE
OUTPUT
OVERFLOW
COMPARE
OUTPUT
Timer Interface Module A (TIMA)
OVERFLOW
COMPARE
OUTPUT
Technical Data
I/O Registers
OVERFLOW
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