DSPIC33FJ128MC804-H/ML Microchip Technology, DSPIC33FJ128MC804-H/ML Datasheet - Page 288

• Manufacturer Part Number: DSPIC33FJ128MC804-H/ML
• Description: 16-bit DSC, 128KB Flash, Motor, CAN, DMA, 40 MIPS, NanoWatt 44 QFN 8x8x0.9mm TUB
• Manufacturer: Microchip Technology
• Series: dsPIC™ 33Fr

Specifications of DSPIC33FJ128MC804-H/ML

• Core Processor: dsPIC
• Core Size: 16-Bit
• Speed: 20 MIPS
• Connectivity: CAN, 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: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 9x10b/12b, D/A 6x16b
• 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

dsPIC33FJ32MC302/304, dsPIC33FJ64MCX02/X04 AND dsPIC33FJ128MCX02/X04
23.4
The DAC clock signal clocks the internal logic of the
Audio DAC module. The data sample rate of the Audio
DAC is an integer division of the rate of the DAC clock.
The DAC clock is generated via a clock divider circuit
that accepts an auxiliary clock from the auxiliary
oscillator. The divisor ratio is programmed by clock
FIGURE 23-1:
FIGURE 23-2:
DS70291E-page 288
Note: V
DAC CLOCK
CONTROL
OD
Note 1:
+ = V
Count (DAC1RDAT)
Output (DAC1RN)
Output (DAC1RP)
Negative DAC
DACH
Positive DAC
DAC input
BLOCK DIAGRAM OF AUDIO DIGITAL-TO-ANALOG (DAC) CONVERTER
AUDIO DAC OUTPUT FOR RAMP INPUT (UNSIGNED)
If DAC1RDAT and DAC1LDAT are empty, data will be taken from the DACDFLT register.
- V
V
DACL
0x0000
V
0xFFFF
V
DACFDIV<6:0>
V
DACL
DACL
DACH
DACH
, V
OD
V
V
- = V
DACM
ACLK
DACM
DACL
DAC1RDAT
DAC1LDAT
- V
CLK DIV
DACH
; refer to Audio DAC Module Specifications,
DACDFLT
divider bits (DACFDIV<6:0>) in the DAC Control
register (DAC1CON). The resulting DAC clock must
not exceed 25.6 MHz. If lower sample rates are to be
used, then the DAC filter clock frequency may be
reduced to reduce power consumption. The DAC clock
frequency is 256 times the sampling frequency.
Note 1
Note 1
D/A
D/A
Table
© 2011 Microchip Technology Inc.
31-48, for typical values.
Amp
Amp
Right Channel
Left Channel
DAC1RM
DAC1RP
DAC1RN
DAC1LM
DAC1LP
DAC1LN