dsPIC33FJ32MC104-I/PT Microchip Technology, dsPIC33FJ32MC104-I/PT Datasheet - Page 210

• Manufacturer Part Number: dsPIC33FJ32MC104-I/PT
• Description: Digital Signal Processors & Controllers - DSP, DSC 16bit Mtr Cnt Fam 16 MIPS 32KBFLSH 2KBRAM
• Manufacturer: Microchip Technology
• Type: dsPIC33FJ32(GP/MC)101/102/104r

Specifications of dsPIC33FJ32MC104-I/PT

• Rohs: yes
• Core: dsPIC33F
• Data Bus Width: 16 bit
• Program Memory Size: 32 KB
• Data Ram Size: 2 KB
• Maximum Clock Frequency: 7.37 MHz, 32 kHz
• Number Of Programmable I/os: 35
• Number Of Timers: 5 x 16-bit, 2 x 32-bit
• Device Million Instructions Per Second: 16 MIPs
• Operating Supply Voltage: 3 V to 3.6 V
• Maximum Operating Temperature: + 125 C
• Package / Case: TQFP-44
• Mounting Style: SMD/SMT
• Family / Core: dsPIC33FJ32(GP/MC)101/102/104
• Interface Type: I2C, SPI, UART
• Minimum Operating Temperature: - 40 C
• On-chip Adc: Yes
• Product: DSPs
• Program Memory Type: Flash
• Supply Current: 10 mA

dsPIC33FJ16(GP/MC)101/102 AND dsPIC33FJ32(GP/MC)101/102/104
18.1
1.
2.
DS70652E-page 210
In multi-node direct connect UART networks,
UART receive inputs react to the complementary
logic level, defined by the URXINV bit
(UxMODE<4>) which defines the Idle state, the
default of which is logic high (i.e., URXINV = 0).
Because remote devices do not initialize at the
same time, it is likely that one of the devices,
because the RX line is floating, will trigger a Start
bit detection and will cause the first byte received
after the device has been initialized to be invalid.
To avoid this situation, the user should use a
pull-up or pull-down resistor on the RX pin
depending on the value of the URXINV bit.
a)
b)
The first character received on a wake-up from
Sleep mode, caused by activity on the UxRX pin
of the UART module, will be invalid. In Sleep
mode, peripheral clocks are disabled. By the
time the oscillator system has restarted and
stabilized from Sleep mode, the baud rate bit
sampling clock, relative to the incoming UxRX
bit timing, is no longer synchronized, resulting in
the first character being invalid. This is to be
expected.
UART Helpful Tips
If URXINV = 0, use a pull-up resistor on the
RX pin.
If URXINV = 1, use a pull-down resistor on
the RX pin.
18.2
Many useful resources are provided on the main
product page of the Microchip web site for the devices
listed in this data sheet. This product page, which can
be accessed using this link, contains the latest updates
and additional information.
18.2.1
• Section 17. “UART” (DS70188) in the
• Code Samples
• Application Notes
• Software Libraries
• Webinars
• All related “dsPIC33F/PIC24H Family Reference
• Development Tools
Note:
“dsPIC33F/PIC24H Family Reference Manual”
Manual” sections
UART Resources
In the event you are not able to access
the product page using the link above,
enter this URL in your browser:
http://www.microchip.com/wwwproducts/
Devices.aspx?dDocName=en554109
KEY RESOURCES
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