PIC18F6680-E/PT Microchip Technology, PIC18F6680-E/PT Datasheet - Page 274
PIC18F6680-E/PT
Manufacturer Part Number
PIC18F6680-E/PT
Description
IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,TQFP,64PIN,PLASTIC
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PCM18XK1.pdf
(496 pages)
3.PIC18F6585-IPT.pdf
(8 pages)
4.PIC18F6585-IPT.pdf
(38 pages)
5.PIC18F6585-IPT.pdf
(14 pages)
Specifications of PIC18F6680-E/PT
Rohs Compliant
YES
Core Processor
PIC
Core Size
8-Bit
Speed
25MHz
Connectivity
CAN, I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LVD, POR, PWM, WDT
Number Of I /o
52
Program Memory Size
64KB (32K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
3.25K x 8
Voltage - Supply (vcc/vdd)
4.2 V ~ 5.5 V
Data Converters
A/D 16x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 125°C
Package / Case
64-TFQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
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Manufacturer
Quantity
Price
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Part Number:
PIC18F6680-E/PT
Manufacturer:
MPS
Quantity:
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Part Number:
PIC18F6680-E/PT
Manufacturer:
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- PIC16F616T-ISL PDF datasheet
- PCM18XK1 PDF datasheet #2
- PIC18F6585-IPT PDF datasheet #3
- PIC18F6585-IPT PDF datasheet #4
- PIC18F6585-IPT PDF datasheet #5
- Current page: 274 of 496
- Download datasheet (9Mb)
PIC18F6585/8585/6680/8680
22.2
Depending on the power source for the device voltage,
the voltage normally decreases relatively slowly. This
means that the LVD module does not need to be
constantly operating. To decrease the current require-
ments, the LVD circuitry only needs to be enabled for
short periods where the voltage is checked. After doing
the check, the LVD module may be disabled.
Each time that the LVD module is enabled, the circuitry
requires some time to stabilize. After the circuitry has
stabilized, all status flags may be cleared. The module
will then indicate the proper state of the system.
FIGURE 22-4:
DS30491C-page 272
Internally Generated
Internally Generated
CASE 2:
CASE 1:
Reference Stable
Reference Stable
Operation
Enable LVD
Enable LVD
LVDIF
LVDIF
V
V
DD
DD
LOW-VOLTAGE DETECT WAVEFORMS
T
T
IVRST
IVRST
LVDIF may not be set
The following steps are needed to set up the LVD
module:
1.
2.
3.
4.
5.
6.
Figure 22-4 shows typical waveforms that the LVD
module may be used to detect.
LVDIF cleared in software,
LVDIF remains set since LVD condition still exists
Write the value to the LVDL3:LVDL0 bits
(LVDCON register) which selects the desired
LVD trip point.
Ensure that LVD interrupts are disabled (the
LVDIE bit is cleared or the GIE bit is cleared).
Enable the LVD module (set the LVDEN bit in
the LVDCON register).
Wait for the LVD module to stabilize (the IRVST
bit to become set).
Clear the LVD interrupt flag which may have
falsely become set until the LVD module has
stabilized (clear the LVDIF bit).
Enable the LVD interrupt (set the LVDIE and the
GIE bits).
LVDIF cleared in software
2004 Microchip Technology Inc.
LVDIF cleared in software
V
V
LVD
LVD
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