DSPIC33FJ32MC204-I/PT Microchip Technology Inc., DSPIC33FJ32MC204-I/PT Datasheet - Page 107

• Manufacturer Part Number: DSPIC33FJ32MC204-I/PT
• Description: 16-BIT DSC, 44LD, 32KB FLASH, MOTOR, 40 MIPS, NANOWATT
• Manufacturer: Microchip Technology Inc.
• Type: DSPr

Specifications of DSPIC33FJ32MC204-I/PT

• A/d Inputs: 9-Channels, 10-Bit
• Cpu Speed: 40 MIPS
• Eeprom Memory: 0 Bytes
• Input Output: 35
• Interface: I2C, SPI, UART/USART
• Ios: 35
• Memory Type: Flash
• Number Of Bits: 16
• Package Type: 44-pin TQFP
• Programmable Memory: 32K Bytes
• Ram Size: 2K Bytes
• Timers: 3-16-bit, 1-32-bit
• Voltage, Range: 3-3.6 V
• Dc: 08+
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

8.0
The
dsPIC33FJ16MC304 devices provide the ability to
manage power consumption by selectively managing
clocking to the CPU and the peripherals. In general, a
lower clock frequency and a reduction in the number of
circuits being clocked constitutes lower consumed
power.
dsPIC33FJ16MC304 devices can manage power con-
sumption in four different ways:
• Clock frequency
• Instruction-based Sleep and Idle modes
• Software-controlled Doze mode
• Selective peripheral control in software
Combinations of these methods can be used to selec-
tively tailor an application’s power consumption while
still maintaining critical application features, such as
timing-sensitive communications.
8.1
dsPIC33FJ32MC202/204 and dsPIC33FJ16MC304
devices allow a wide range of clock frequencies to be
selected under application control. If the system clock
configuration is not locked, users can choose low-
power or high-precision oscillators by simply changing
the NOSC bits (OSCCON<10:8>). The process of
changing a system clock during operation, as well as
limitations to the process, are discussed in more detail
in Section 7.0 “Oscillator Configuration”.
EXAMPLE 8-1:
© 2007 Microchip Technology Inc.
PWRSAV #SLEEP_MODE
PWRSAV #IDLE_MODE
Note:
POWER-SAVING FEATURES
Clock Frequency and Clock
Switching
This data sheet summarizes the features
of
dsPIC33FJ16MC304 devices. It is not
intended to be a comprehensive reference
source. To complement the information in
this data sheet, refer to the “dsPIC33F
Family Reference Manual”. Please see
the Microchip web site (www.micro-
chip.com) for the latest dsPIC33F Family
Reference Manual sections.
dsPIC33FJ32MC202/204
dsPIC33FJ32MC202/204
the
dsPIC33FJ32MC202/204
PWRSAV INSTRUCTION SYNTAX
; Put the device into SLEEP mode
; Put the device into IDLE mode
and
and
and
Preliminary
8.2
dsPIC33FJ32MC202/204 and dsPIC33FJ16MC304
devices have two special power-saving modes that are
entered through the execution of a special PWRSAV
instruction. Sleep mode stops clock operation and halts
all code execution. Idle mode halts the CPU and code
execution, but allows peripheral modules to continue
operation. The assembler syntax of the PWRSAV
instruction is shown in Example 8-1.
Sleep and Idle modes can be exited as a result of an
enabled interrupt, WDT time-out or a device Reset. When
the device exits these modes, it is said to wake-up.
8.2.1
The following occur in Sleep mode:
• The system clock source is shut down. If an
• The device current consumption is reduced to a
• The Fail-Safe Clock Monitor does not operate,
• The LPRC clock continues to run in Sleep mode if
• The WDT, if enabled, is automatically cleared
• Some device features or peripherals may continue
• Any peripheral that requires the system clock
The device will wake-up from Sleep mode on any of the
these events:
• Any interrupt source that is individually enabled
• Any form of device Reset
• A WDT time-out
On wake-up from Sleep mode, the processor restarts
with the same clock source that was active when Sleep
mode was entered.
on-chip oscillator is used, it is turned off.
minimum, provided that no I/O pin is sourcing
current.
since the system clock source is disabled.
the WDT is enabled.
prior to entering Sleep mode.
to operate. This includes items such as the input
change notification on the I/O ports, or peripherals
that use an external clock input.
source for its operation is disabled.
Note:
Instruction-Based Power-Saving
Modes
SLEEP MODE
SLEEP_MODE and IDLE_MODE are
constants defined in the assembler
include file for the selected device.
DS70283B-page 105