PIC18F25K80-E/SO Microchip Technology, PIC18F25K80-E/SO Datasheet - Page 391
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PIC18F25K80-E/SO
Manufacturer Part Number
PIC18F25K80-E/SO
Description
ECAN, 32KB Flash, 4KB RAM, 16 MIPS, 12-bit ADC, CTMU 28 SOIC .300in TUBE
Manufacturer
Microchip Technology
Series
PIC® XLP™ 18Fr
Datasheet
1.PIC18F25K80-ISO.pdf
(628 pages)
Specifications of PIC18F25K80-E/SO
Core Processor
PIC
Core Size
8-Bit
Speed
64MHz
Connectivity
ECAN, I²C, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LVD, POR, PWM, WDT
Number Of I /o
24
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
3.6K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 8x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
*
Processor Series
PIC18F25K80
Core
PIC
Data Bus Width
8 bit
Data Ram Size
1 KB
Interface Type
I2C, SPI, USART
Maximum Clock Frequency
64 MHz
Number Of Programmable I/os
24
Number Of Timers
5
Operating Supply Voltage
1.8 V to 5.5 V
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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26.2
To set up the HLVD module:
1.
2.
3.
4.
5.
2011 Microchip Technology Inc.
Note:
Select the desired HLVD trip point by writing the
value to the HLVDL<3:0> bits.
Set the VDIRMAG bit to detect high voltage
(VDIRMAG = 1 ) or low voltage (VDIRMAG = 0 ).
Enable the HLVD module by setting the
HLVDEN bit.
Clear the HLVD interrupt flag (PIR2<2>), which
may have been set from a previous interrupt.
If interrupts are desired, enable the HLVD
interrupt by setting the HLVDIE and GIE bits
(PIE2<2> and INTCON<7>, respectively).
An interrupt will not be generated until the
IRVST bit is set.
HLVD Setup
Before changing any module settings
(V
module (HLVDEN = 0 ), make the changes
and re-enable the module. This prevents
the generation of false HLVD events.
DIRMAG
, HLVDL<3:0>), first disable the
Preliminary
PIC18F66K80 FAMILY
26.3
When the module is enabled, the HLVD comparator
and voltage divider are enabled and consume static
current. The total current consumption, when enabled,
is specified in electrical specification Parameter
( Ihlvd) (Table
Depending on the application, the HLVD module does
not need to operate constantly. To reduce current
requirements, the HLVD circuitry may only need to be
enabled for short periods where the voltage is checked.
After such a check, the module could be disabled.
26.4
The internal reference voltage of the HLVD module,
specified in electrical specification Parameter
(
used by other internal circuitry, such as the
programmable Brown-out Reset. If the HLVD or other
circuits using the voltage reference are disabled to
lower the device’s current consumption, the reference
voltage circuit will require time to become stable before
a low or high-voltage condition can be reliably
detected. This start-up time, T
is independent of device clock speed. It is specified in
electrical specification Parameter
The HLVD interrupt flag is not enabled until T
expired and a stable reference voltage is reached. For
this reason, brief excursions beyond the set point may
not be detected during this interval (see
Figure 26-3).
Section 31.0 “Electrical Characteristics”
Current Consumption
HLVD Start-up Time
31-11).
IRVST
37 (Table
DS39977C-page 391
, is an interval that
Figure 26-2
31-11).
), may be
IRVST
D022B
has
37
or
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