Z8F6421PM020SC Datasheet, PDF (107/299 Pages) Zilog, Inc. – High Performance 8-Bit Microcontrollers Z8 Encore-R 64K Series

Z8 Encore!^® 64K Series
Product Specification
87
Timer 0-3 PWM High and Low Byte Registers
The Timer 0-3 PWM High and Low Byte (TxPWMH and TxPWML) registers (Tables 42
and 43) are used for Pulse-Width Modulator (PWM) operations. These registers also store
the Capture values for the Capture and Capture/COMPARE modes.
Table 42. Timer 0-3 PWM High Byte Register (TxPWMH)
BITS
7
6
5
4
3
2
1
0
FIELD
PWMH
RESET
0
R/W
ADDR
R/W
F04H, F0CH, F14H, F1CH
Table 43. Timer 0-3 PWM Low Byte Register (TxPWML)
BITS
7
6
5
4
3
2
1
0
FIELD
PWML
RESET
R/W
ADDR
0
R/W
F05H, F0DH, F15H, F1DH
PWMH and PWML—Pulse-Width Modulator High and Low Bytes
These two bytes, {PWMH[7:0], PWML[7:0]}, form a 16-bit value that is compared to the
current 16-bit timer count. When a match occurs, the PWM output changes state. The
PWM output value is set by the TPOL bit in the Timer Control 1 Register (TxCTL1) regis-
ter.
The TxPWMH and TxPWML registers also store the 16-bit captured timer value when
operating in Capture or Capture/COMPARE modes.
PS019915-1005
Timers