Z8FMC04100 ZILOG [Zilog, Inc.], Z8FMC04100 Datasheet - Page 218

• Manufacturer Part Number: Z8FMC04100
• Description: Z8 Encore-R Motor Control Flash MCUs
• Manufacturer: ZILOG [Zilog, Inc.]

196
Z8 Encore!
Product Specification
Comparator and Operational Amplifier
Operational Amplifier Operation
Interrupts
®
Motor Control Flash MCUs
To operate, the operational amplifier must be enabled by setting the
parator and Op Amp Register to 1. In addition, the OPINP, OPINN, and OPOUT alternate
functions must be enabled on their respective general-purpose I/O pins. Refer to the
Alternate Functions
The logical value of the operational amplifier output (OPOUT) can be read from the Port 3
data input register if both the operational amplifier and input pin Schmitt trigger are
enabled. Refer to the
The operational amplifier can also generate an interrupt via the GPIO Port B3 input inter-
rupt, if enabled.
The output of the operational amplifier is also connected to an analog input (ANA3) of the
Analog-to-Digital Converter (ADC) multiplexer.
The operational amplifier does not automatically power-down. To reduce operating cur-
rent when not in use, the operational amplifier may be disabled by clearing the
the Comparator and Op Amp Register to 0.
When the operational amplifier is disabled, the output is high impedance.
The comparator will generate an interrupt on any change in the logic output value (from 0
to 1 and from 1 to 0). Refer to the
about enabling and prioritization of the comparator interrupt.
section on page 36 for more information.
GPIO Alternate Functions
P R E L I M I N A R Y
Interrupt Controller
section on page 36 for more information.
chapter on page 51 for information
OPEN
bit in the Com-
PS024604-1005
OPEN
GPIO
bit in