PIC18F2455-I/SO Microchip Technology, PIC18F2455-I/SO Datasheet - Page 271
![IC PIC MCU FLASH 12KX16 28SOIC](/photos/6/59/65909/150-28-soic_sml.jpg)
PIC18F2455-I/SO
Manufacturer Part Number
PIC18F2455-I/SO
Description
IC PIC MCU FLASH 12KX16 28SOIC
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PCM18XR1.pdf
(438 pages)
3.PIC18F2221-ISO.pdf
(46 pages)
4.PIC18F2455-ISO.pdf
(14 pages)
5.PIC18F2455-ISO.pdf
(8 pages)
6.PIC18F2455-ISO.pdf
(26 pages)
7.PIC18F2455-ISO.pdf
(426 pages)
8.PIC18LF2455-ISO.pdf
(430 pages)
Specifications of PIC18F2455-I/SO
Program Memory Type
FLASH
Program Memory Size
24KB (12K x 16)
Package / Case
28-SOIC (7.5mm Width)
Core Processor
PIC
Core Size
8-Bit
Speed
48MHz
Connectivity
I²C, SPI, UART/USART, USB
Peripherals
Brown-out Detect/Reset, HLVD, POR, PWM, WDT
Number Of I /o
24
Eeprom Size
256 x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
4.2 V ~ 5.5 V
Data Converters
A/D 10x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
PIC18F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
2 KB
Interface Type
SPI/I2C/EAUSART
Maximum Clock Frequency
48 MHz
Number Of Programmable I/os
24
Number Of Timers
4
Operating Supply Voltage
2 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
Development Tools By Supplier
PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, ICE4000, DM163014, DV164136
Minimum Operating Temperature
- 40 C
On-chip Adc
10-ch x 10-bit
Package
28SOIC W
Device Core
PIC
Family Name
PIC18
Maximum Speed
48 MHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
XLT28SO-1 - SOCKET TRANSITION 28SOIC 300MILI3-DB18F4550 - BOARD DAUGHTER ICEPIC3DM163025 - PIC DEM FULL SPEED USB DEMO BRD
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18F2455-I/SO
Manufacturer:
Microchi
Quantity:
4 052
Part Number:
PIC18F2455-I/SO
Manufacturer:
MICROCHI
Quantity:
20 000
- PIC16F616T-ISL PDF datasheet
- PCM18XR1 PDF datasheet #2
- PIC18F2221-ISO PDF datasheet #3
- PIC18F2455-ISO PDF datasheet #4
- PIC18F2455-ISO PDF datasheet #5
- PIC18F2455-ISO PDF datasheet #6
- PIC18F2455-ISO PDF datasheet #7
- PIC18LF2455-ISO PDF datasheet #8
- Current page: 271 of 426
- Download datasheet (8Mb)
23.0
The comparator voltage reference is a 16-tap resistor
ladder network that provides a selectable reference
voltage. Although its primary purpose is to provide a
reference for the analog comparators, it may also be
used independently of them.
A block diagram of the module is shown in Figure 23-1.
The resistor ladder is segmented to provide two ranges
of CV
conserve power when the reference is not being used.
The module’s supply reference can be provided from
either device V
23.1
The voltage reference module is controlled through the
CVRCON register (Register 23-1). The comparator
voltage reference provides two ranges of output
voltage, each with 16 distinct levels. The range to be
REGISTER 23-1:
2004 Microchip Technology Inc.
REF
COMPARATOR VOLTAGE
REFERENCE MODULE
Configuring the Comparator
Voltage Reference
values and has a power-down function to
bit 7
bit 6
bit 5
bit 4
bit 3-0
DD
/V
SS
or an external voltage reference.
CVRCON: COMPARATOR VOLTAGE REFERENCE CONTROL REGISTER
bit 7
Legend:
R = Readable bit
-n = Value at POR
CVREN: Comparator Voltage Reference Enable bit
1 = CV
0 = CV
CVROE: Comparator V
1 = CV
0 = CV
CVRR: Comparator V
1 = 0 to 0.667 CV
0 = 0.25 CV
CVRSS: Comparator V
1 = Comparator reference source CV
0 = Comparator reference source CV
CVR3:CVR0: Comparator V
When CVRR = 1:
CV
When CVRR = 0:
CV
CVREN
R/W-0
Note 1: CVROE overrides the TRISA<2> bit setting.
REF
REF
= ((CVR3:CVR0)/24) x (CV
= (CV
REF
REF
REF
REF
CVROE
circuit powered on
circuit powered down
voltage level is also output on the RA2/AN2/V
voltage is disconnected from the RA2/AN2/V
RSRC
RSRC
R/W-0
/4) + (((CVR3:CVR0)/32) x CV
RSRC
to 0.75 CV
(1)
PIC18F2455/2550/4455/4550
REF
REF
REF
, with CV
R/W-0
CVRR
Range Selection bit
Preliminary
Source Selection bit
Output Enable bit
W = Writable bit
‘1’ = Bit is set
REF
RSRC
RSRC
Value Selection bits (0
, with CV
RSRC
CVRSS
R/W-0
/24 step size (low range)
RSRC
RSRC
used is selected by the CVRR bit (CVRCON<5>). The
primary difference between the ranges is the size of the
steps
(CVR3:CVR0), with one range offering finer resolution.
The equations used to calculate the output of the
comparator voltage reference are as follows:
The comparator reference supply voltage can come
from either V
V
voltage source is selected by the CVRSS bit
(CVRCON<4>).
The settling time of the comparator voltage reference
must be considered when changing the CV
Characteristics”).
output (see Table 28-3 in Section 28.0 “Electrical
)
REF
RSRC
= (V
= V
If CVRR = 1:
CV
If CVRR = 0:
CV
CV
- that are multiplexed with RA2 and RA3. The
(1)
REF
REF
RSRC
DD
selected
REF
/32 step size (high range)
RSRC
R/W-0
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
CVR3
– V
= ((CVR3:CVR0)/24) x CV
+) – (V
= (CV
)
DD
SS
)
REF
and V
(CVR3:CVR0)
REF
RSRC
REF
by
-/CV
R/W-0
-/CV
CVR2
-)
SS
/4) + (((CVR3:CVR0)/32) x
the
REF
, or the external V
REF
pin
CV
pin
x = Bit is unknown
REF
R/W-0
CVR1
15)
DS39632B-page 269
RSRC
Selection
REF
R/W-0
CVR0
+ and
bit 0
REF
bits
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