PIC18F86K90-I/PT Microchip Technology, PIC18F86K90-I/PT Datasheet - Page 387

• Manufacturer Part Number: PIC18F86K90-I/PT
• Description: 64kB Flash, 4kB RAM, 1kB EE, 16MIPS, NanoWatt XLP, LCD, 5V 80 TQFP 12x12x1mm TRA
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 18Fr

Specifications of PIC18F86K90-I/PT

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 64MHz
• Connectivity: I²C, LIN, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LCD, POR, PWM, WDT
• Number Of I /o: 69
• Program Memory Size: 64KB (32K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 24x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-TQFP
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

24.0
The analog comparator module contains three compar-
ators that can be independently configured in a variety
of ways. The inputs can be selected from the analog
inputs and two internal voltage references. The digital
outputs are available at the pin level and can also be
read through the control register. Multiple output and
interrupt event generation are also available. A generic
single comparator from the module is shown in
Figure 24-1.
Key features of the module includes:
• Independent comparator control
• Programmable input configuration
• Output to both pin and register levels
• Programmable output polarity
• Independent interrupt generation for each
FIGURE 24-1:
 2010 Microchip Technology Inc.
comparator with configurable interrupt-on-change
C2INB/C2IND
Note 1:
CCH<1:0>
COMPARATOR MODULE
CxINC
2:
CV
CxINA
CxINB
CREF
V
REF
Comparators, 1 and 3, use C2INB as an input to the inverting terminal. Comparator 2 uses C2IND as an input to
the inverted terminal.
C1INC, C2INC and C2IND are all unavailable on 64-pin devices (PIC18F6XK90).
(1,2)
BG
(2)
COMPARATOR SIMPLIFIED BLOCK DIAGRAM
0
1
0
1
2
3
V
V
IN
IN
+
-
CON
Cx
Preliminary
PIC18F87K90 FAMILY
24.1
The CMxCON registers (CM1CON, CM2CON and
CM3CON) select the input and output configuration for
each comparator, as well as the settings for interrupt
generation (see Register 24-1).
The CMSTAT register (Register 24-2) provides the out-
put results of the comparators. The bits in this register
are read-only.
EVPOL<1:0>
Registers
Interrupt
Polarity
CPOL
Logic
Logic
COE
DS39957B-page 387
CMPxOUT
(CMSTAT<7:5>)
CMPxIF
CxOUT