PIC24FV32KA304-E/ML Microchip Technology, PIC24FV32KA304-E/ML Datasheet - Page 133
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PIC24FV32KA304-E/ML
Manufacturer Part Number
PIC24FV32KA304-E/ML
Description
32KB Flash, 2KB RAM, 512B EEPROM, 16 MIPS, 12-bit ADC, CTMU, 5V 44 QFN 8x8x0.9mm
Manufacturer
Microchip Technology
Series
PIC® XLP™ 24Fr
Datasheet
1.PIC24F16KA301T-ISO.pdf
(320 pages)
Specifications of PIC24FV32KA304-E/ML
Processor Series
PIC24FV
Core
PIC
Data Bus Width
16 bit
Program Memory Type
Flash
Program Memory Size
32 KB
Data Ram Size
2 KB
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
Package / Case
QFN-44
Development Tools By Supplier
MPLAB IDE Software
Minimum Operating Temperature
- 40 C
Core Processor
PIC
Core Size
16-Bit
Speed
32MHz
Connectivity
I²C, IrDA, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, HLVD, POR, PWM, WDT
Number Of I /o
38
Eeprom Size
512 x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Data Converters
A/D 16x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC24FV32KA304-E/ML
Manufacturer:
MICROCHIP
Quantity:
12 000
- Current page: 133 of 320
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10.3
The Ultra Low-Power Wake-up (ULPWU) on pin, RB0,
allows a slow falling voltage to generate an interrupt
without excess current consumption.
To use this feature:
1.
2.
3.
4.
5.
When the voltage on RB0 drops below V
wakes up and executes the next instruction.
This feature provides a low-power technique for
periodically waking up the device from Sleep mode.
The time-out is dependent on the discharge time of the
RC circuit on RB0.
When the ULPWU module wakes the device from
Sleep mode, the ULPWUIF bit (IFS5<0>) is set. Soft-
ware can check this bit upon wake-up to determine the
wake-up source.
See
2011 Microchip Technology Inc.
Charge the capacitor on RB0 by configuring the
RB0 pin to an output and setting it to ‘1’.
Stop charging the capacitor by configuring RB0
as an input.
Discharge the capacitor by setting the ULPEN
and ULPSINK bits in the ULPWCON register.
Configure Sleep mode.
Enter Sleep mode.
Example 10-3
Ultra Low-Power Wake-up
for initializing the ULPWU module
IL
, the device
PIC24FV32KA304 FAMILY
EXAMPLE 10-3:
A series resistor, between RB0 and the external
capacitor, provides overcurrent protection for the
RB0/AN0/ULPWU pin and enables software calibration
of the time-out (see
FIGURE 10-1:
A timer can be used to measure the charge time and
discharge time of the capacitor. The charge time can
then be adjusted to provide the desired delay in Sleep.
This technique compensates for the affects of temper-
ature, voltage and component accuracy. The peripheral
can also be configured as a simple, programmable
Low-Voltage Detect (LVD) or temperature sensor.
/
// 1. Charge the capacitor on RB0
//*******************************
//*****************************
//2. Stop Charging the capacitor
//
//*****************************
//*****************************
//3. Enable ULPWU Interrupt
//*****************************
IFS5bits.ULPWUIF = 0;
IEC5bits.ULPWUIE = 1;
IPC21bits.ULPWUIP = 0x7;
//*****************************
//4. Enable the Ultra Low Power
//
//
//*****************************
//*****************************
//5. Enter Sleep Mode
//*****************************
//for sleep, execution will
//resume here
/*******************************
TRISBbits.TRISB0 = 0;
LATBbits.LATB0 = 1;
for(i = 0; i < 10000; i++) Nop();
TRISBbits.TRISB0 = 1;
ULPWCONbits.ULPEN = 1;
ULPWCONbit.ULPSINK = 1;
Sleep();
on RB0
Wakeup module and allow
capacitor discharge
RB0
Figure
ULTRA LOW-POWER
WAKE-UP INITIALIZATION
SERIAL RESISTOR
10-1).
R
1
DS39995B-page 133
C
1
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