DSPIC33FJ128GP306-I/PT Microchip Technology, DSPIC33FJ128GP306-I/PT Datasheet - Page 17

• Manufacturer Part Number: DSPIC33FJ128GP306-I/PT
• Description: IC DSPIC MCU/DSP 128K 64TQFP
• Manufacturer: Microchip Technology
• Series: dsPIC™ 33Fr

Specifications of DSPIC33FJ128GP306-I/PT

• Program Memory Type: FLASH
• Program Memory Size: 128KB (128K x 8)
• Package / Case: 64-TFQFP
• Core Processor: dsPIC
• Core Size: 16-Bit
• Speed: 40 MIPs
• Connectivity: I²C, IrDA, LIN, SPI, UART/USART
• Peripherals: AC'97, Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT
• Number Of I /o: 53
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 18x10b/12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Product: DSCs
• Data Bus Width: 16 bit
• Processor Series: DSPIC33F
• Core: dsPIC
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 53
• Data Ram Size: 16 KB
• 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, DV164033
• Minimum Operating Temperature: - 40 C
• Package: 64TQFP
• Device Core: dsPIC
• Family Name: dSPIC33
• Maximum Speed: 40 MHz
• Operating Supply Voltage: 3.3 V
• Interface Type: I2C/SPI/UART
• On-chip Adc: 18-chx10-bit|18-chx12-bit
• Number Of Timers: 9
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 876-1001 - DSPIC33 BREAKOUT BOARDDM300024 - KIT DEMO DSPICDEM 1.1DV164033 - KIT START EXPLORER 16 MPLAB ICD2MA330012 - MODULE DSPIC33 100P TO 84QFPMA330011 - MODULE DSPIC33 100P TO 100QFPDM300019 - BOARD DEMO DSPICDEM 80L STARTERDM240001 - BOARD DEMO PIC24/DSPIC33/PIC32AC164327 - MODULE SKT FOR 64TQFPDV164005 - KIT ICD2 SIMPLE SUIT W/USB CABLE
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

4.0
Direct Memory Access (DMA) is a very efficient
mechanism of copying data between peripheral SFRs
(e.g., UART Receive register, Input Capture 1 buffer)
and buffers or variables stored in RAM with minimal
CPU
automatically copy entire blocks of data, without the
user software having to read or write peripheral Special
Function Registers (SFRs) every time a peripheral
interrupt occurs. To exploit the DMA capability, the
corresponding user buffers or variables must be
located in DMA RAM space.
The DMA Controller features eight identical data
transfer channels, each with its own set of control and
status registers. The UART, SPI, DCI, Input Capture,
Output Compare, ECAN™ and A/D modules can utilize
DMA. Each DMA channel can be configured to copy
data either from buffers stored in DMA RAM to
peripheral SFRs or from peripheral SFRs to buffers in
DMA RAM.
Each channel supports the following features:
• Word or byte-sized data transfers
• Transfers from peripheral to DMA RAM or DMA
FIGURE 4-1:
© 2005 Microchip Technology Inc.
RAM to peripheral
Note: CPU and DMA address buses are not shown for clarity.
SRAM
intervention.
DIRECT MEMORY ACCESS
SRAM X-Bus
CPU
TOP LEVEL SYSTEM ARCHITECTURE USING A DEDICATED TRANSACTION BUS
The
PORT 1
DMA RAM
DMA
CPU Peripheral DS Bus
Peripheral
Non-DMA
PORT 2
Ready
Controller
DMA DS Bus
can
Preliminary
DMA Controller
• Indirect addressing of DMA RAM locations with or
• Peripheral Indirect Addressing – In some
• One-Shot Block Transfers – Terminating DMA
• Continuous Block Transfers – Reloading DMA
• Ping-Pong Mode – Switching between two DMA
• Automatic or manual initiation of block transfers
• Each channel can select from 32 possible
For each DMA channel, a DMA interrupt request is
generated when a block transfer is complete.
Alternatively, an interrupt can be generated when half of
the block has been filled. Additionally, a DMA error trap
is generated in either of the following Fault conditions:
• DMA RAM data write collision between the CPU
• Peripheral SFR data write collision between the
without automatic post-increment
peripherals, the DMA RAM read/write addresses
may be partially derived from the peripheral
transfer after one block transfer
RAM buffer start address after every block
transfer is complete
RAM start addresses between successive block
transfers, thereby filling two buffers alternately
sources of data sources or destinations
and a peripheral
CPU and the DMA Controller
Channels
DMA
Peripheral Indirect Address
Peripheral 1
CPU
Ready
DMA
DMA
Peripheral 3
dsPIC33F
CPU
Ready
DMA
DMA
DS70155C-page 15
Peripheral 2
CPU
Ready
DMA
DMA