PIC32MX460F512L-80I/PT Microchip Technology, PIC32MX460F512L-80I/PT Datasheet - Page 432

• Manufacturer Part Number: PIC32MX460F512L-80I/PT
• Description: IC PIC MCU FLASH 512K 100-TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 32MXr

Specifications of PIC32MX460F512L-80I/PT

• Program Memory Type: FLASH
• Program Memory Size: 512KB (512K x 8)
• Package / Case: 100-TFQFP
• Core Processor: MIPS32® M4K™
• Core Size: 32-Bit
• Speed: 80MHz
• Connectivity: I²C, IrDA, LIN, PMP, SPI, UART/USART, USB OTG
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Number Of I /o: 85
• Ram Size: 32K 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
• Processor Series: PIC32MX4xx
• Core: MIPS
• Data Bus Width: 32 bit
• Data Ram Size: 32 KB
• Interface Type: I2C , SPI , UART
• Maximum Clock Frequency: 80 MHz
• Number Of Programmable I/os: 85
• Number Of Timers: 5 x 16 bit, 1 x 32 bit
• Operating Supply Voltage: 2.3 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52713-733, 52714-737
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, DM320003, DM320002, MA320002
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit
• Controller Family/series: PIC32
• No. Of I/o's: 85
• Ram Memory Size: 32KB
• Cpu Speed: 80MHz
• No. Of Timers: 6
• Embedded Interface Type: EUART, I2C, PSP, SPI
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 876-1000 - PIC32 BREAKOUT BOARDAC244003 - TEST BD MPLAB REAL ICE LOOPBACKDM320003 - BOARD DEMO USB PIC32 OTGAC244006 - KIT MPLAB REAL ICE TRACEAC164333 - MODULE SKT FOR PM3 100QFP
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

PIC32MX3XX/4XX
19.5
The UART will begin an automatic baud rate measure-
ment sequence whenever a Start bit is received when
the Auto-Baud Rate Detect is enabled (ABAUD = 1).
This feature is active only while the auto-wake-up is
disabled (WAKE = 0). In addition, LPBACK must equal
‘0’ for the auto-baud operation. Following the Start bit,
the auto-baud expects to receive an ASCII ‘U’ (0x55)
in order to calculate the proper bit rate. On the 5th
UxRX pin rising edge, an accumulated BRG counter
value totaling the proper BRG period is transferred to
the UxBRG register. The ABAUD bit is automatically
cleared.
19.6
The following sequence is performed to send a mes-
sage frame header that is composed of a Break char-
acter, followed by an auto-baud Sync byte. This
sequence is typical of a LIN bus master:
1.
2.
3.
4.
After the Break has been sent, the UTXBRK bit is reset
by hardware. The Sync character now transmits.
19.7
1.
2.
3.
4.
5.
The act of reading the UxRXREG character will move
the next character to the top of the receive FIFO,
including a new set of PERR and FERR values.
DS61143C-page 430
Configure the UART for the desired mode.
Set UTXEN and UTXBRK to set up the Break
character.
Load the UxTXREG with a dummy character to
initiate transmission (value is ignored).
Write ‘0x55’ to UxTXREG to load the Sync
character into the transmit FIFO.
Set up the UART (as described in Section 19.3).
Enable the UART.
A receive interrupt will be generated when one
or more data characters have been received as
per interrupt control bit, URXISEL<1:0>.
Read the OERR bit to determine if an overrun
error has occurred. The OERR bit must be reset
in software.
Read UxRXREG.
Auto-Baud Support
Break and Sync Transmit
Sequence
Receiving in 8-Bit or 9-Bit Data
Mode
Preliminary
19.8
UARTx Clear to Send (UxCTS) and Request to Send
(UxRTS) are the two hardware controlled pins that are
associated with the UART module. These two pins
allow the UART to operate in Simplex and Flow Control
mode. They are implemented to control the transmis-
sion and reception between the Data Terminal
Equipment (DTE). The UEN<1:0> bits in the UxMODE
register configure these pins.
19.9
The UART module provides two types of infrared UART
support:
• IrDA clock output to support external IrDA
• Full implementation of the IrDA encoder and
19.10 External IrDA Support – IrDA
To support external IrDA encoder and decoder devices,
the BCLKx pin (same as the UxRTS pin) can be
configured to generate the 16x baud clock. With
UEN<1:0> = 11, the BCLKx pin will output the 16x
baud clock (if the UART module is enabled). It can be
used to support the IrDA codec chip.
19.11 Built-in IrDA Encoder and Decoder
The UART has full implementation of the IrDA encoder
and decoder as part of the UART module. The built-in
IrDA encoder and decoder functionality is enabled
using the IREN bit (UxMODE<12>). When enabled
(IREN = 1), the receive pin (UxRX) acts as the input
from the infrared receiver. The transmit pin (UxTX) acts
as the output to the infrared transmitter.
encoder and decoder device (legacy module
support)
decoder
Operation of UxCTS and UxRTS
Control Pins
Infrared Support
Clock Output
© 2008 Microchip Technology Inc.