MC68HC711G5 MOTOROLA [Motorola, Inc], MC68HC711G5 Datasheet - Page 143

• Manufacturer Part Number: MC68HC711G5
• Description: High-density Complementary Metal Oxide Semiconductor (HCMOS) Microcontroller
• Manufacturer: MOTOROLA [Motorola, Inc]

MC68HC11G5
The PWM unit will also work as a pulse accumulator by switching off the output signal to the EVO
pin (PH6) and ignoring ECMP1B.
11.5.2 Operation of Pulse Accumulator Unit in Mode 3
The PA unit can be clocked by the E-clock, a scaled E-clock, or an external signal applied to the EVI2
(PH4) pin. Alternatively an external signal on EVI2 can be used to gate the E-clock or scaled E-clock
signal to the counter EVCNT2. The clock source is selected via the INPUT2 selector.
EVCNT2 counts the clock pulses coming from the INPUT2 selector. It is cleared by a successful
comparison between itself and the compare register ECMP2A. ECMP2A can be programmed with
E/128
EVI2 (PH4)
E/16
E/32
E/64
E/2
E/4
E/8
E
Figure 11-5. 8-bit PWM with 256 Clock Prescaler (Mode 3)
INPUT2
EVENT COUNTER
8
8
ECMP2A
ECMP2B
ECMP1A
ECMP1B
EVCNT2
EVCNT1
CLEAR
CLEAR
8
8
S
R
EVENT2
EVENT1
(PH6) EVO
MOTOROLA
11-13