HD64F38602R Datasheet, PDF (393/552 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer

Section 18 Comparators
Section 18 Comparators
This LSI includes comparators to compare the input voltage and reference voltage.
The block diagram of the comparators is shown in figure 18.1.
18.1 Features
• Reference voltage can be specified as internal power supply or external input (VCref).
• When the internal power supply is selected as the reference voltage, programmable selection of
sixteen types of voltages is possible.
• When the internal power supply is selected, the hysteresis characteristics of the comparison
result can be selected.
• Two analog input channels
Each channel includes its own comparator.
• Use of module standby mode enables this module to be placed in standby mode independently
when not used. (A comparator is halted as the initial value. For details, refer to section 5.4,
Module Standby Function.)
COMP0
COMP1
VCref
Comparator
+
-
Comparator
+
-
CMDR
26/30
25/30
24/30
10/30
9/30
CMCR0
CMCR1
4R
R
Interrupt
R
generator
Interrupt
request
R
9R
[Legend]
CMDR: Compare data register
CMCR0: Compare control register 0
CMCR1: Compare control register 1
Figure 18.1 Block Diagram of Comparators
ADCMS3AA_000020020900
Rev. 3.00 May 15, 2007 Page 361 of 516
REJ09B0152-0300