PIC32MX575F256LT-80I/PT Microchip Technology, PIC32MX575F256LT-80I/PT Datasheet - Page 17

• Manufacturer Part Number: PIC32MX575F256LT-80I/PT
• Description: 256KB Flash, 64KB RAM, 80 MHz, USB, 1xCAN, 8 DMA 100 TQFP 12x12x1mm T/R
• Manufacturer: Microchip Technology
• Series: PIC® 32MXr

Specifications of PIC32MX575F256LT-80I/PT

• Core Processor: MIPS32® M4K™
• Core Size: 32-Bit
• Speed: 80MHz
• Connectivity: CAN, I²C, SPI, UART/USART, USB OTG
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Number Of I /o: 85
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 64K 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-TFQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

8.0
Before a device can be programmed, the programmer
must check the status of the device to ensure that it is
ready to receive information.
FIGURE 8-1:
© 2010 Microchip Technology Inc.
CHECK DEVICE STATUS
statusVal = XferData (MCHP_STATUS)
No
SendCommand (MTAP_COMMAND)
SendCommand (MTAP_SW_MTAP)
SetMode (6’b011111)
Set MCLR low
CFGRDY = 1
CHECK DEVICE STATUS
FCBUSY = 0
Done
Yes
4-Wire
8.1
Four-wire JTAG programming is a Mission mode
operation and therefore the setup sequence to begin
programing should be done while asserting MCLR.
Holding the device in Reset prevents the processor
from executing instructions or driving ports.
The following steps are required to check the device
status using the 4-wire interface:
1.
2.
3.
4.
5.
6.
8.2
The following steps are required to check the device
status using the 2-wire interface:
1.
2.
3.
4.
5.
Note:
Set MCLR pin low.
SetMode (6’b011111) to force the Chip TAP
controller into Run Test/Idle state.
SendCommand (MTAP_SW_MTAP).
SendCommand (MTAP_COMMAND).
statusVal = XferData (MCHP_STATUS).
If CFGRDY (statusVal<3>) is not ‘1’ and
FCBUSY (statusVal<2>) is not ‘0’ GOTO step 5.
SetMode (6’b011111) to force the Chip TAP
controller into Run Test/Idle state.
SendCommand (MTAP_SW_MTAP).
SendCommand (MTAP_COMMAND).
statusVal = XferData (MCHP_STATUS).
If CFGRDY (statusVal<3>) is not ‘1’ and
FCBUSY (statusVal<2>) is not ‘0’, GOTO
step 4.
4-Wire Interface
2-Wire Interface
If CFGRDY and FCBUSY do not come to
the proper state within 10 ms, the
sequence may have been executed wrong
or the device is damaged.
PIC32MX
DS61145G-page 17