PIC18F4580T-I/PT Microchip Technology, PIC18F4580T-I/PT Datasheet - Page 264

• Manufacturer Part Number: PIC18F4580T-I/PT
• Description: IC PIC MCU FLASH 16KX16 44TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F4580T-I/PT

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: CAN, I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, HLVD, POR, PWM, WDT
• Number Of I /o: 36
• Program Memory Size: 32KB (16K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 11x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

PIC18F2480/2580/4480/4580
21.1
There are eight modes of operation for the compara-
tors, shown in Figure 21-1. Bits, CM<2:0> of the
CMCON register, are used to select these modes. The
TRISA register controls the data direction of the com-
parator pins for each mode. If the Comparator mode is
FIGURE 21-1:
DS39637D-page 264
Comparators Reset (POR Default Value)
CM<2:0> = 000
Two Independent Comparators
CM<2:0> = 010
Two Common Reference Comparators
CM<2:0> = 100
One Independent Comparator with Output
CM<2:0> = 001
RD1/PSP1/C1IN-
RD0/PSP0/C1IN+
RD3/PSP3/C2IN-
RD2/PSP2/C2IN+
RD1/PSP1/C1IN-
RD0/PSP0/C1IN+
RD3/PSP3/C2IN-
RD2/PSP2/C2IN+
RD1/PSP1/C1IN-
RD0/PSP0/C1IN+
RD3/PSP3/C2IN-
RD2/PSP2/C2IN+
A = Analog Input, port reads zeros always
* Setting the TRISA<5:4> bits will disable the comparator outputs by configuring the pins as inputs.
RD1/PSP1/C1IN-
RD0/PSP0/C1IN+
RE1/WR/AN6/C1OUT*
RD3/PSP3/C2IN-
RD2/PSP2/C2IN+
Comparator Configuration
A
A
A
D
A
A
A
A
A
A
A
A
COMPARATOR I/O OPERATING MODES
A
A
D
D
V
V
V
V
V
V
V
V
V
V
V
V
IN
IN
IN
IN
V
V
V
V
IN
IN
IN
IN
IN
IN
IN
IN
-
+
-
+
IN
IN
IN
IN
-
+
-
+
-
+
-
+
-
+
-
+
C1
C2
C1
C2
C1
C2
C1
C2
C1OUT
C2OUT
D = Digital Input
Off
(Read as ‘0’)
Off
(Read as ‘0’)
C1OUT
C2OUT
C1OUT
Off
(Read as ‘0’)
Two Common Reference Comparators with Outputs
CM<2:0> = 101
Two Independent Comparators with Outputs
CM<2:0> = 011
Comparators Off
CM<2:0> = 111
Four Inputs Multiplexed to Two Comparators
CM<2:0> = 110
RD1/PSP1/
C1IN-
RD0/PSP0/
C1IN+
RD3/PSP3/
C2IN-
RD2/PSP2/
C2IN+
RD1/PSP1/C1IN-
RD0/PSP0/C1IN+
RD3/PSP3/C2IN-
RD2/PSP2/C2IN+
RD1/PSP1/C1IN-
RD0/PSP0/C1IN+
RE1/WR/AN6/C1OUT*
RD3/PSP3/C2IN-
RD2/PSP2/C2IN+
RE2/CS/AN7/C2OUT*
RD1/PSP1/C1IN-
RD0/PSP0/C1IN+
RE1/WR/AN6/C1OUT*
RD3/PSP3/C2IN-
RD2/PSP2/C2IN+
RE2/CS/AN7/C2OUT*
changed, the comparator output level may not be valid
for the specified mode change delay shown in
Section 28.0 “Electrical Characteristics”.
Note:
CIS (CMCON<3>) is the Comparator Input Switch
A
A
A
A
Comparator interrupts should be disabled
during a Comparator mode change;
otherwise, a false interrupt may occur.
CIS = 0
CIS = 1
CIS = 0
CIS = 1
A
A
A
D
A
A
A
A
D
D
D
D
© 2009 Microchip Technology Inc.
V
V
V
V
V
V
V
V
V
V
V
V
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
-
+
-
+
-
+
-
+
V
V
V
V
-
+
-
+
IN
IN
IN
IN
CV
-
+
-
+
C1
C2
C1
C2
C1
C2
REF
C1
C2
From V
Off
(Read as ‘0’)
Off
(Read as ‘0’)
C1OUT
C2OUT
C1OUT
C2OUT
REF
C1OUT
C2OUT
Module