DSPIC33FJ32MC202-E/MM Microchip Technology, DSPIC33FJ32MC202-E/MM Datasheet - Page 216

16-bit DSC, 32KB Flash,Motor,40 MIPS,nanoWatt 28 QFN-S 6x6mm TUBE

DSPIC33FJ32MC202-E/MM

Manufacturer Part Number
DSPIC33FJ32MC202-E/MM
Description
16-bit DSC, 32KB Flash,Motor,40 MIPS,nanoWatt 28 QFN-S 6x6mm TUBE
Manufacturer
Microchip Technology
Series
dsPIC™ 33Fr

Specifications of DSPIC33FJ32MC202-E/MM

Core Processor
dsPIC
Core Size
16-Bit
Speed
40 MIPs
Connectivity
I²C, IrDA, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, DMA, Motor Control PWM, QEI, POR, PWM, WDT
Number Of I /o
21
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 6x10b/12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
28-QFN
Package
28QFN-S EP
Device Core
dsPIC
Family Name
dSPIC33
Maximum Speed
40 MHz
Operating Supply Voltage
3.3 V
Data Bus Width
16 Bit
Number Of Programmable I/os
21
Interface Type
I2C/SPI/UART
On-chip Adc
6-chx10-bit|6-chx12-bit
Number Of Timers
5
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
AC164336 - MODULE SOCKET FOR PM3 28/44QFNDV164033 - KIT START EXPLORER 16 MPLAB ICD2DM240001 - BOARD DEMO PIC24/DSPIC33/PIC32
Eeprom Size
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DSPIC33FJ32MC202-E/MM
Quantity:
600
dsPIC33FJ32MC202/204 and dsPIC33FJ16MC304
21.4
For
dsPIC33FJ16MC304 devices, the WDT is driven by the
LPRC oscillator. When the WDT is enabled, the clock
source is also enabled.
21.4.1
The nominal WDT clock source from LPRC is 32 kHz.
This feeds a prescaler than can be configured for either
5-bit (divide-by-32) or 7-bit (divide-by-128) operation.
The prescaler is set by the WDTPRE Configuration bit.
With a 32 kHz input, the prescaler yields a nominal
WDT time-out period (T
4 ms in 7-bit mode.
A variable postscaler divides down the WDT prescaler
output and allows for a wide range of time-out periods.
The postscaler is controlled by the WDTPOST<3:0>
Configuration bits (FWDT<3:0>), which allow the selec-
tion of 16 settings, from 1:1 to 1:32,768. Using the pres-
caler and postscaler, time-out periods ranging from
1 ms to 131 seconds can be achieved.
The WDT, prescaler and postscaler are reset:
• On any device Reset
• On the completion of a clock switch, whether
• When a PWRSAV instruction is executed
• When the device exits Sleep or Idle mode to
• By a CLRWDT instruction during normal execution
FIGURE 21-2:
DS70283H-page 216
All Device Resets
Transition to New Clock Source
Exit Sleep or Idle Mode
PWRSAV Instruction
CLRWDT Instruction
SWDTEN
FWDTEN
LPRC Clock
invoked by software (i.e., setting the OSWEN bit
after changing the NOSC bits) or by hardware
(i.e., Fail-Safe Clock Monitor)
(i.e., Sleep or Idle mode is entered)
resume normal operation
Note:
Watchdog Timer (WDT)
PRESCALER/POSTSCALER
The CLRWDT and PWRSAV instructions
clear the prescaler and postscaler counts
when executed.
dsPIC33FJ32MC202/204
WINDIS
WDT BLOCK DIAGRAM
WDT
) of 1 ms in 5-bit mode, or
(divide by N1)
WDTPRE
Prescaler
RS
WDT Window Select
and
Watchdog Timer
RS
21.4.2
If the WDT is enabled, it will continue to run during Sleep
or Idle modes. When the WDT time-out occurs, the
device will wake the device and code execution will con-
tinue from where the PWRSAV instruction was executed.
The corresponding SLEEP or IDLE bits (RCON<3,2>) will
need to be cleared in software after the device wakes up.
21.4.3
The WDT is enabled or disabled by the FWDTEN
Configuration bit in the FWDT Configuration register.
When the FWDTEN Configuration bit is set, the WDT is
always enabled.
The WDT can be optionally controlled in software when
the FWDTEN Configuration bit has been programmed
to ‘0’. The WDT is enabled in software by setting the
SWDTEN control bit (RCON<5>). The SWDTEN
control bit is cleared on any device Reset. The software
WDT option allows the user application to enable the
WDT for critical code segments and disable the WDT
during non-critical segments for maximum power
savings.
The WDT flag bit, WDTO (RCON<4>), is not automatically
cleared following a WDT time-out. To detect subsequent
WDT events, the flag must be cleared in software.
WDTPOST<3:0>
(divide by N2)
Note:
Postscaler
CLRWDT Instruction
SLEEP AND IDLE MODES
ENABLING WDT
If the WINDIS bit (FWDT<6>) is cleared,
the CLRWDT instruction should be executed
by the application software only during the
last 1/4 of the WDT period. This CLRWDT
window can be determined by using a timer.
If a CLRWDT instruction is executed before
this window, a WDT Reset occurs.
© 2011 Microchip Technology Inc.
Sleep/Idle
1
0
WDT
Wake-up
WDT
Reset

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