Z8FMC16100 Datasheet, PDF (104/402 Pages) Zilog, Inc. – Z8 Encore-R Motor Control Flash MCUs

Z8 Encore!^® Motor Control Flash MCUs
Product Specification
82
PWM Minimum Pulse Width Filter
The value in the PWM Minimum Pulse Width Filter (PWMMPF) Register, shown in Table
51, determines the minimum width pulse, either high or low, that can be generated by the
PWM module. The minimum pulse width period is calculated as:
PWMDB + PWMMPF
T_MINPULSEOUT = _{TSYSTEMCLOCK x PWMPrescale}
Caution: A Value other than 00H must be written to the PWMMPF registor or the PWM output
waveform will be distorted!
Table 51. PWM Minimum Pulse Width Filter (PWMMPF)
BITS
7
6
5
4
3
2
1
0
FIELD
PWMMPF[7:0]
RESET
00H
R/W
R/W
ADDR
F23H
Bit
Position
Value
(H)
Description
[7:0]
PWMMPF
PWM Minimum Pulse Filter
Sets the minimum allowed output pulse width in PWM clock cycles.
Note: This register can only be written when PWEN is cleared.
PWM Fault Mask Register
The PWM Fault Mask (PWMFM) Register, shown in Table 52, enables individual fault
sources. PWM behaviour when an input is asserted is determined by the PWM Fault Con-
trol Register (PWMFCTL).
Table 52. PWM Fault Mask Register (PWMFM)
BITS
FIELD
RESET
R/W
ADDR
7
6
Reserved
00
R
5
DBGMSK
0
R/W
4
3
Reserved
000
R
F24H
2
F1MASK
0
R/W
1
C0MASK
0
R/W
0
FMASK
0
R/W
Pulse-Width Modulator
PRELIMINARY
PS024604-1005