PIC24FJ256DA210T-I/BG Microchip Technology, PIC24FJ256DA210T-I/BG Datasheet - Page 155

• Manufacturer Part Number: PIC24FJ256DA210T-I/BG
• Description: 16-bit, 256KB Flash, 96K RAM, USB, Graphics 121 XBGA 10x10x1.20mm T/R
• Manufacturer: Microchip Technology
• Series: PIC® 24Fr

Specifications of PIC24FJ256DA210T-I/BG

• Core Processor: PIC
• Core Size: 16-Bit
• Speed: 32MHz
• Connectivity: I²C, IrDA, SPI, UART/USART, USB OTG
• Peripherals: Brown-out Detect/Reset, GFX, LVD, POR, PWM, WDT
• Number Of I /o: 84
• Program Memory Size: 256KB (85.5K x 24)
• Program Memory Type: FLASH
• Ram Size: 96K x 8
• Voltage - Supply (vcc/vdd): 2.2 V ~ 3.6 V
• Data Converters: A/D 24x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 121-TFBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

9.0
The PIC24FJ256DA210 family of devices provides 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. All PIC24F devices manage power
consumption 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
selectively tailor an application’s power consumption,
while still maintaining critical application features, such
as timing-sensitive communications.
9.1
PIC24F devices allow for 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. The process of changing a
system clock during operation, as well as limitations to
the process, are discussed in more detail in Section 8.0
“Oscillator Configuration”.
9.2
PIC24F 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 assembly syntax of the
PWRSAV instruction is shown in Example 9-1.
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”.
 2010 Microchip Technology Inc.
Note:
POWER-SAVING FEATURES
Clock Frequency and Clock
Switching
Instruction-Based Power-Saving
Modes
This data sheet summarizes the features
of this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. For more information, refer to the
“PIC24F
Section 10. “Power-Saving Features”
(DS39698). The information in this data
sheet supersedes the information in the
FRM.
Family
Reference
Manual”,
PIC24FJ256DA210 FAMILY
9.2.1
Sleep mode has these features:
• The system clock source is shut down. If an
• The device current consumption will be reduced
• The Fail-Safe Clock Monitor (FSCM) does not
• The LPRC clock will continue to run in Sleep
• The WDT, if enabled, is automatically cleared
• Some device features or peripherals may
The device will wake-up from Sleep mode on any of the
these events:
• On any interrupt source that is individually
• On any form of device Reset
• On a WDT time-out
On wake-up from sleep, the processor will restart with
the same clock source that was active when Sleep
mode was entered.
EXAMPLE 9-1:
PWRSAV
PWRSAV
on-chip oscillator is used, it is turned off.
to a minimum, provided that no I/O pin is sourcing
current.
operate during Sleep mode since the system
clock source is disabled.
mode if the WDT is enabled.
prior to entering Sleep mode.
continue to operate in Sleep mode. This includes
items such as the input change notification on the
I/O ports or peripherals that use an external clock
input. Any peripheral that requires the system
clock source for its operation will be disabled in
Sleep mode. Users can opt to make the voltage
regulator enter standby mode on entering Sleep
mode by clearing the VREGS bit (RCON<8>).
This will decrease current consumption but will
add a delay, T
reason, applications that do not use the voltage
regulator should set this bit.
enabled
#0
#1
SLEEP MODE
VREG
; Put the device into SLEEP mode
; Put the device into IDLE mode
, to the wake-up time. For this
PWRSAV INSTRUCTION
SYNTAX
DS39969B-page 155