PIC32MX795F512L-80I/PF Microchip Technology, PIC32MX795F512L-80I/PF Datasheet - Page 117

• Manufacturer Part Number: PIC32MX795F512L-80I/PF
• Description: IC MCU 32BIT 512KB FLASH 100TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 32MXr

Specifications of PIC32MX795F512L-80I/PF

• Core Size: 32-Bit
• Program Memory Size: 512KB (512K x 8)
• Core Processor: MIPS32® M4K™
• Speed: 80MHz
• Connectivity: CAN, Ethernet, I²C, SPI, UART/USART, USB OTG
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Number Of I /o: 85
• Program Memory Type: FLASH
• Ram Size: 128K x 8
• Voltage - Supply (vcc/vdd): 2.3 V ~ 3.6 V
• Data Converters: A/D 16x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-TQFP
• Controller Family/series: PIC32
• Ram Memory Size: 128KB
• Cpu Speed: 80MHz
• No. Of Timers: 5
• Interface: CAN, I2C, SPI, UART, USB
• No. Of Pwm Channels: 5
• Embedded Interface Type: CAN, I2C, SPI, UART, USB
• Rohs Compliant: Yes
• Processor Series: PIC32MX7xx
• Core: MIPS
• 3rd Party Development Tools: 52713-733, 52714-737
• Development Tools By Supplier: PG164130, DV164035, DV244005
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

10.0
The PIC32MX Direct Memory Access (DMA) controller
is a bus master module useful for data transfers
between different devices without CPU intervention.
The source and destination of a DMA transfer can be
any of the memory mapped modules existent in the
PIC32MX (such as Peripheral Bus (PBUS) devices:
SPI, UART, I
Following are some of the key features of the DMA
controller module:
• Four Identical Channels, each featuring:
FIGURE 10-1:
 2009 Microchip Technology Inc.
- Auto-Increment Source and Destination
- Source and Destination Pointers
- Memory to Memory and Memory to
INT Controller
Note 1: This data sheet summarizes the features
Peripheral Bus
Address Registers
Peripheral Transfers
2: Some registers and associated bits
DIRECT MEMORY ACCESS
(DMA) CONTROLLER
of the PIC32MX5XX/6XX/7XX family of
devices. It is not intended to be a
comprehensive reference source. To
complement the information in this data
sheet, refer to Section 31. “Direct
Memory Access (DMA) Controller”
(DS61117) in the “PIC32MX Family
Reference Manual” , which is available
from
(www.microchip.com/PIC32).
described in this section may not be avail-
able on all devices. Refer to Section 4.0
“Memory Organization” in this data
sheet for device-specific register and bit
information.
2
C™, etc.) or memory itself.
Address Decoder
the
Global Control
DMA BLOCK DIAGRAM
(DMACON)
Microchip
System IRQ
web
Channel n Control
Channel 0 Control
Channel 1 Control
site
Preliminary
PIC32MX5XX/6XX/7XX
• Automatic Word-Size Detection:
• Fixed Priority Channel Arbitration
• Flexible DMA Channel Operating modes:
• Flexible DMA Requests:
• Multiple DMA Channel Status Interrupts:
• DMA Debug Support Features:
• CRC Generation Module:
Channel Priority
- Transfer Granularity, down to byte level
- Bytes need not be word-aligned at source
- Manual (software) or automatic (interrupt)
- One-Shot or Auto-Repeat Block Transfer
- Channel-to-channel chaining
- A DMA request can be selected from any of
- Each channel can select any (appropriate)
- A DMA transfer abort can be selected from
- Pattern (data) match transfer termination
- DMA channel block transfer complete
- Source empty or half empty
- Destination full or half-full
- DMA transfer aborted due to an external
- Invalid DMA address generated
- Most recent address accessed by a DMA
- Most recent DMA channel to transfer data
- CRC module can be assigned to any of the
- CRC module is highly configurable
Arbitration
I
I
I
I
and destination
DMA requests
modes
the peripheral interrupt sources
observable interrupt as its DMA request
source
any of the peripheral interrupt sources
event
channel
available channels
0
2
1
n
Y
Bus Interface
Device Bus + Bus Arbitration
DS61156B-page 117