DSPIC33FJ16MC304-H/ML Microchip Technology, DSPIC33FJ16MC304-H/ML Datasheet - Page 3

• Manufacturer Part Number: DSPIC33FJ16MC304-H/ML
• Description: 16-bit DSC, 16KB Flash,40 MIPS,nanoWatt 44 QFN 8x8x0.9mm TUBE
• Manufacturer: Microchip Technology
• Series: dsPIC™ 33Fr

Specifications of DSPIC33FJ16MC304-H/ML

• Core Processor: dsPIC
• Core Size: 16-Bit
• Speed: 20 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: 35
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 9x10b/12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 140°C
• Package / Case: 44-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

1. Module: JTAG Programming
2. Module: UART
3. Module: UART
EXAMPLE 1:
5. Module: UART
© 2008 Microchip Technology Inc.
unsigned int POSCNT_b15 = 0;
unsigned int Motor_Position = 0;
int main(void)
{
}
void __attribute__((__interrupt__)) _QEIInterrupt(void)
{
}
JTAG programming does not work.
Work around
None.
The auto-baud feature may not calculate the
correct baud rate when the High Baud Rate Enable
bit, BRGH, is set. With the BRGH bit set, the baud
rate calculation used is the same as BRG = 0.
Work around
If the auto-baud feature is needed, use the Low
Baud Rate mode by clearing the BRGH bit.
With the auto-baud feature selected, the Sync
Break character (0x55) may be loaded into the
FIFO as data.
When an auto-baud is detected, the receive
interrupt may occur twice. The first interrupt occurs
at the beginning of the Start bit and the second
after reception of the Sync field character.
Work around
If an extra interrupt is detected, ignore the
additional interrupt.
// ... User's code
MAXCNT = 0x7FFF;
Motor_Position = POSCNT_b15 + POSCNT;
// ... User's code
IFSxbits.QEIIF = 0;
POSCNT_b15 ^= 0x8000; // Overflow or Underflow
// Instead of 0xFFFF
// Clear QEI interrupt flag
// x=2 for dsPIC30F
// x=3 for dsPIC33F
4. Module: UART
6. Module: Motor Control PWM - PWM
Work around
To prevent the Sync Break character from being
loaded into the FIFO, load the UxBRG register with
either 0x0000 or 0xFFFF prior to enabling the
auto-baud feature (ABAUD = 1).
The auto-baud feature may miscalculate for
certain baud rate and clock speed combinations,
resulting in a BRG value that is greater than or less
than the expected value by 1. This may result in
reception or transmission failures.
Work around
Test the auto-baud rate at various clock speed and
baud rate combinations that would be used in an
application. If an inaccurate BRG value is
generated, manually correct the baud rate in user
software.
If the PTDIR bit is set (when PTMR is counting
down), and the CPU execution is halted (after a
breakpoint is reached), PTMR will start counting
up, as if PTDIR was zero.
Work around
None.
Counter Register
DS80338D-page 3