PIC18F2420-E/SP Microchip Technology, PIC18F2420-E/SP Datasheet - Page 235
![no-image](/images/manufacturer_photos/0/4/439/microchip_technology_sml.jpg)
PIC18F2420-E/SP
Manufacturer Part Number
PIC18F2420-E/SP
Description
28 PIN, 16 KB STD FLASH, 3804 RAM, 25 I/O, PB FREE,
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC18F2420-IML.pdf
(412 pages)
2.PIC18F2420-IML.pdf
(16 pages)
3.PIC18F2420-IML.pdf
(8 pages)
4.PIC18F2420-IML.pdf
(6 pages)
5.PIC18F2420-IML.pdf
(8 pages)
6.PIC18F2420-IML.pdf
(4 pages)
Specifications of PIC18F2420-E/SP
Rohs Compliant
YES
Core Processor
PIC
Core Size
8-Bit
Speed
40MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, HLVD, POR, PWM, WDT
Number Of I /o
25
Program Memory Size
16KB (8K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
768 x 8
Voltage - Supply (vcc/vdd)
4.2 V ~ 5.5 V
Data Converters
A/D 10x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
28-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
DVA18XP280 - DEVICE ADAPTER 18F2220 PDIP 28LD
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
PIC18F2420-E/SP
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
- PIC18F2420-IML PDF datasheet
- PIC18F2420-IML PDF datasheet #2
- PIC18F2420-IML PDF datasheet #3
- PIC18F2420-IML PDF datasheet #4
- PIC18F2420-IML PDF datasheet #5
- PIC18F2420-IML PDF datasheet #6
- Current page: 235 of 412
- Download datasheet (7Mb)
20.0
The
comparators that can be configured in a variety of
ways. The inputs can be selected from the analog
inputs multiplexed with pins, RA0 through RA5, as well
as the on-chip voltage reference (see Section 21.0
“Comparator Voltage Reference Module”). The digi-
tal outputs (normal or inverted) are available at the pin
level and can also be read through the control register.
REGISTER 20-1:
© 2008 Microchip Technology Inc.
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2-0
C2OUT
R-0
analog
COMPARATOR MODULE
C2OUT: Comparator 2 Output bit
When C2INV = 0:
1 = C2 V
0 = C2 V
When C2INV = 1:
1 = C2 V
0 = C2 V
C1OUT: Comparator 1 Output bit
When C1INV = 0:
1 = C1 V
0 = C1 V
When C1INV = 1:
1 = C1 V
0 = C1 V
C2INV: Comparator 2 Output Inversion bit
1 = C2 output inverted
0 = C2 output not inverted
C1INV: Comparator 1 Output Inversion bit
1 = C1 output inverted
0 = C1 output not inverted
CIS: Comparator Input Switch bit
When CM<2:0> = 110:
1 = C1 V
0 = C1 V
CM<2:0>: Comparator Mode bits
Figure 20-1 shows the Comparator modes and the CM<2:0> bit settings.
comparator
C1OUT
C2 V
C2 V
R-0
CMCON: COMPARATOR CONTROL REGISTER
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
+ > C2 V
+ < C2 V
+ < C2 V
+ > C2 V
+ > C1 V
+ < C1 V
+ < C1 V
+ > C1 V
- connects to RA3/AN3/V
- connects to RA2/AN2/V
- connects to RA0/AN0
- connects to RA1/AN1
module
W = Writable bit
‘1’ = Bit is set
C2INV
R/W-0
IN
IN
IN
IN
IN
IN
IN
IN
-
-
-
-
-
-
-
-
contains
PIC18F2420/2520/4420/4520
C1INV
R/W-0
two
REF
REF
+
-/CV
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
REF
R/W-0
The CMCON register (Register 20-1) selects the
comparator input and output configuration. Block
diagrams of the various comparator configurations are
shown in Figure 20-1.
CIS
R/W-1
CM2
x = Bit is unknown
R/W-1
CM1
DS39631E-page 233
R/W-1
CM0
bit 0
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