MC68HC705V12CFN MOTOROLA [Motorola, Inc], MC68HC705V12CFN Datasheet - Page 113

• Manufacturer Part Number: MC68HC705V12CFN
• Description: The Motorola microcontroller
• Manufacturer: MOTOROLA [Motorola, Inc]

11.1 Contents
11.2 Introduction
MC68HC705V12
MOTOROLA
Advance Information — MC68HC705V12
—
Rev. 3.0
Section 11. Pulse Width Modulators (PWMs)
11.2
11.3
11.4
11.4.1
11.4.2
11.4.3
11.4.4
11.5
11.6
11.7
The pulse width modulator (PWM) system has two 6-bit PWMs (PWMA
and PWMB). Preceding the 6-bit ( 64) counters are two programmable
prescalers.The PWM frequency is selected by choosing the desired
divide option from the programmable prescalers. Note that the PWM
clock input is f
where PSA and PSB are the values selected by the A and B prescaler
and 64 comes from the 6-bit modulus counter. See
precise values. The f
external oscillator frequency.
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113
PWM Functional Description . . . . . . . . . . . . . . . . . . . . . . . . .114
PWM Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .116
PWMs during Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . .120
PWMs during Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . .120
PWMs during Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .120
PWMA Control Register . . . . . . . . . . . . . . . . . . . . . . . . . .117
PWMB Control Register . . . . . . . . . . . . . . . . . . . . . . . . . .118
PWMA Data Register . . . . . . . . . . . . . . . . . . . . . . . . . . . .119
PWMB Data Register . . . . . . . . . . . . . . . . . . . . . . . . . . . .119
Pulse Width Modulators (PWMs)
OP
. The PWM frequency will be f
OP
is the internal bus frequency fixed to half of the
OP
/(PSA*(PSB-1)*64)
Table 11-1
Advance Information
for
113