PIC24FJ256GA110-I/PT Microchip Technology, PIC24FJ256GA110-I/PT Datasheet - Page 112

• Manufacturer Part Number: PIC24FJ256GA110-I/PT
• Description: IC PIC MCU FLASH 256K 100TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 24Fr

Specifications of PIC24FJ256GA110-I/PT

• Program Memory Type: FLASH
• Program Memory Size: 256KB (85.5K x 24)
• Package / Case: 100-TFQFP
• Core Processor: PIC
• Core Size: 16-Bit
• Speed: 32MHz
• Connectivity: I²C, PMP, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 85
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 3.6 V
• Data Converters: A/D 16x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC24FJ
• Core: PIC
• Data Bus Width: 16 bit
• Data Ram Size: 16 KB
• Interface Type: I2C/SPI/UART
• Maximum Clock Frequency: 32 MHz
• Number Of Programmable I/os: 85
• Number Of Timers: 5
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52713-733, 52714-737, 53276-922, EWDSPIC
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, DM240001, DM240011
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 16-ch x 10-bit
• Package: 100TQFP
• Device Core: PIC
• Family Name: PIC24
• Maximum Speed: 32 MHz
• Operating Supply Voltage: 2.5|3.3 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 876-1004 - PIC24 BREAKOUT BOARDMA240015 - BOARD MCV PIM FOR 24F256GADM240011 - KIT STARTER MPLAB FOR PIC24F MCUAC164333 - MODULE SKT FOR PM3 100QFP
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

PIC24FJ256GA110 FAMILY
7.5
In addition to the CLKO output (F
certain oscillator modes, the device clock in the
PIC24FJ256GA110 family devices can also be config-
ured to provide a reference clock output signal to a port
pin. This feature is available in all oscillator configura-
tions and allows the user to select a greater range of
clock submultiples to drive external devices in the
application.
This reference clock output is controlled by the
REFOCON register (Register 7-4). Setting the ROEN
bit (REFOCON<15>) makes the clock signal available
on the REFO pin. The RODIV bits (REFOCON<11:8>)
enable the selection of 16 different clock divider
options.
REGISTER 7-4:
DS39905B-page 110
bit 15
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 15
bit 14
bit 13
bit 12
ROEN
R/W-0
U-0
—
Reference Clock Output
ROEN: Reference Oscillator Output Enable bit
1 = Reference oscillator enabled on REFO pin
0 = Reference oscillator disabled
Unimplemented: Read as ‘0’
ROSSLP: Reference Oscillator Output Stop in Sleep bit
1 = Reference oscillator continues to run in Sleep
0 = Reference oscillator is disabled in Sleep
ROSEL: Reference Oscillator Source Select bit
1 = Primary oscillator used as the base clock. Note that the crystal oscillator must be enabled using
0 = System clock used as the base clock; base clock reflects any clock switching of the device
the FOSC2:FOSC0 bits; crystal maintains the operation in Sleep mode.
U-0
U-0
—
—
REFOCON: REFERENCE OSCILLATOR CONTROL REGISTER
W = Writable bit
‘1’ = Bit is set
ROSSLP
R/W-0
U-0
OSC
—
/2) available in
ROSEL
R/W-0
U-0
—
Preliminary
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
RODIV3
R/W-0
The ROSSLP and ROSEL bits (REFOCON<13:12>)
control the availability of the reference output during
Sleep mode. The ROSEL bit determines if the oscillator
on OSC1 and OSC2, or the current system clock source,
is used for the reference clock output. The ROSSLP bit
determines if the reference source is available on REFO
when the device is in Sleep mode.
To use the reference clock output in Sleep mode, both
the ROSSLP and ROSEL bits must be set. The device
clock must also be configured for one of the primary
modes (EC, HS or XT); otherwise, if the POSCEN bit is
not also set, the oscillator on OSC1 and OSC2 will be
powered down when the device enters Sleep mode.
Clearing the ROSEL bit allows the reference output
frequency to change as the system clock changes
during any clock switches.
U-0
—
RODIV2
R/W-0
U-0
—
© 2008 Microchip Technology Inc.
x = Bit is unknown
RODIV1
R/W-0
U-0
—
RODIV0
R/W-0
U-0
—
bit 8
bit 0