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MSM66591/ML66592 User's Manual
Chapter 13 PWM Functions
13.1 Configuration of PWM
The MSM66591/ML66592 have 12 sets of PWM functions (PWM0–PWM11). PWM0–
PWM11 have the same configuration except for the SFR address.
PWM consists of 16-bit counters (PWC0–PWC11), 16-bit counter buffer registers
(PWC0BF–PWC11BF), 16-bit registers (PWR0–PWR11), 16-bit buffer registers
(PW0BF–PW11BF), a comparison circuit for PWC0–PWC11 and PWR0–PWR11, an
output F/F, and various control registers (PWINTQ0, PWINTQ1, PWINTE0, PWINTE1,
PWCON0–PWCON5 and PWRUN) that control operations.
If PWM0–PWM11 pins are used for PWM functions, set the corresponding bit of the
Port 7 and Port 8 secondary function control registers to "1". If the
OE
pin is in "L" level,
PWM0–PWM11 pins operate (outputs) as a PWM function, but if the
OE
pin is in "H"
level, PWM0–PWM11 pins go into high impedance status.
[1]
PWM Counters (PWC0–PWC11)
PWC0–PWC11 are 16-bit down counters. The input clock can be selected from among
the master clock, TBCCLK, 1/2 TBCCLK, 1/4 TBCCLK, 1/8 TBCCLK, and 1/16
TBCCLK. If an underflow occurs when the corresponding PWnRUN bit is "1" and
PWC0–PWC11 are in count operations, the PWM counter generates an interrupt
request (PWC0 and PWC1, PWC2 and PWC3, PWC4 and PWC5, PWC6 and PWC7,
PWC8 and PWC9, PWC10 and PWC11 are common), and the contents of the 16-bit
PWM counter buffer register are loaded to the PWM counters. The PWM counter then
loads the content of the 16-bit PWM buffer register to the 16-bit PWM register, and sets
the output F/F to "1".
PWC0–PWC11 can be read, but cannot be written, by the program. However, if
PWC0BF–PWC11BF are written when the corresponding PWnRUN bit is "0" (stop
status), the 16-bit contents are written to PWC0–PWC11 as well.
At reset (when the
RES
signal is input, the BRK instruction is executed, the watchdog
timer is overflown, or an operation code trap is generated), PWC0–PWC11 become
FFFFH.
[2]
PWM Counter Buffer Registers (PWC0BF–PWC11BF)
PWC0BF–PWC11BF are 16-bit registers for setting cycles (for storing the reload values
for PWC0–PWC11). If PWC0–PWC11 underflow, the contents of PWC0BF–PWC11BF
are loaded to the 16-bit PWM counter.
PWC0BF–PWC11BF can be read, but cannot be written, by the program. If PWC0BF–
PWC11BF are written to when the corresponding PWnRUN bit is "0" (stop status), the
contents of 16-bits are written to PWC0–PWC11 as well.
At reset (when the
RES
signal is input, the BRK instruction is executed, the watchdog
timer is overflown, or an operation code trap is generated), PWC0BF–PWC11BF
become FFFFH.
Содержание ML66592
Страница 1: ...MSM66591 ML66592 User s Manual CMOS 16 bit microcontroller FEUL66591 66592 01 Issue Date Mar 4 2002 ...
Страница 15: ...Contents 12 ...
Страница 17: ......
Страница 18: ...Overview Chapter 1 1 ...
Страница 19: ......
Страница 30: ...Description of Pins Chapter 2 2 ...
Страница 31: ......
Страница 44: ...CPU Architecture Chapter 3 3 ...
Страница 45: ......
Страница 101: ...3 56 MSM66591 ML66592User sManual Chapter 3 CPU Architecture ...
Страница 102: ...CPU Control Functions Chapter 4 4 ...
Страница 103: ......
Страница 111: ...4 8 MSM66591 ML66592User sManual Chapter 4 CPU Control Functions ...
Страница 112: ...Memory Control Functions Chapter 5 5 ...
Страница 113: ......
Страница 117: ...5 4 MSM66591 ML66592User sManual Chapter 5 Memory Control Functions ...
Страница 118: ...Port Functions Chapter 6 6 ...
Страница 119: ......
Страница 152: ...Output Pin Control Pin OE Chapter 7 7 ...
Страница 153: ......
Страница 155: ...7 2 MSM66591 ML66592User sManual Chapter 7 Output Pin Control Pin OE ...
Страница 156: ...Clock Generation Circuit Chapter 8 8 ...
Страница 157: ......
Страница 160: ...Time Base Counter TBC Chapter 9 9 ...
Страница 161: ......
Страница 164: ...Watchdog Timer WDT Chapter 10 10 ...
Страница 165: ......
Страница 170: ...Flexible Timer FTM Chapter 11 11 11 ...
Страница 171: ......
Страница 213: ...11 42 MSM66591 ML66592User sManual Chapter 11 Flexible Timer FTM ...
Страница 214: ...General Purpose 8 Bit Timer Function Chapter 12 12 ...
Страница 215: ......
Страница 223: ...12 8 MSM66591 ML66592User sManual Chapter 12 General Purpose 8 Bit Timer Function ...
Страница 224: ...PWM Functions Chapter 13 13 ...
Страница 225: ......
Страница 244: ...Baud Rate Generator Functions Chapter 14 14 ...
Страница 245: ......
Страница 263: ...14 18 MSM66591 ML66592User sManual Chapter 14 Baud Rate Generator Functions ...
Страница 264: ...Serial Port Functions Chapter 15 15 ...
Страница 265: ......
Страница 348: ...A D Converter Functions Chapter 16 16 ...
Страница 349: ......
Страница 381: ...16 32 MSM66591 ML66592User sManual Chapter 16 A D Converter Functions ...
Страница 382: ...Transition Detector Functions Chapter 17 17 ...
Страница 383: ......
Страница 387: ...17 4 MSM66591 ML66592User sManual Chapter 17 Transition Detector Functions ...
Страница 388: ...Peripheral Functions Chapter 18 18 ...
Страница 389: ......
Страница 392: ...External Interrupt Request Function Chapter 19 19 ...
Страница 393: ......
Страница 396: ...Interrupt Request Processing Function Chapter 20 20 ...
Страница 397: ......
Страница 407: ...20 10 MSM66591 ML66592User sManual Chapter 20 Interrupt Request Processing Function ...
Страница 408: ...Bus Port Functions Chapter 21 21 ...
Страница 409: ......
Страница 413: ...21 4 MSM66591 ML66592User sManual Chapter 21 Bus Port Functions ...
Страница 414: ...Expansion Port Chapter 22 22 ...
Страница 415: ......
Страница 420: ...Serial Port with FIFO SCI5 Chapter 23 23 ...
Страница 421: ......
Страница 431: ...23 10 MSM66591 ML66592User sManual Chapter 23 Serial Port with FIFO SCI5 ...
Страница 432: ...RAM Monitor Function Chapter 24 24 ...
Страница 433: ......
Страница 441: ...24 8 MSM66591 ML66592User sManual Chapter 24 RAM Monitor Function ...
Страница 442: ...25 Electrical Characteristics Chapter 25 ...
Страница 443: ......
Страница 458: ...Package Dimensions Chapter 26 26 ...
Страница 459: ......
Страница 461: ...26 2 MSM66591 ML66592User sManual Chapter 26 Package Dimensions ...
Страница 462: ...Revision History Chapter 27 27 ...
Страница 463: ......
Страница 465: ...27 2 MSM66591 ML66592User sManual Chapter 27 Revision History ...