PIC18F45K20-E/P Microchip Technology, PIC18F45K20-E/P Datasheet - Page 41

• Manufacturer Part Number: PIC18F45K20-E/P
• Description: 32KB, Flash, 1536bytes-RAM, 36I/O, 8-bit Family,nanowatt XLP 40 PDIP .600in TUBE
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 18Fr

Specifications of PIC18F45K20-E/P

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 48MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, HLVD, POR, PWM, WDT
• Number Of I /o: 35
• Program Memory Size: 32KB (16K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Data Converters: A/D 14x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: DM240313 - BOARD DEMO 8BIT XLPAC164112 - VOLTAGE LIMITER MPLAB ICD2 VPPDM164124 - KIT STARTER FOR PIC18F4XK20
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

3.6
FIGURE 3-26:
© 2009 Microchip Technology Inc.
LESSON 6: USING PICkit 3 DEBUG EXPRESS
This lesson covers using the PICkit 3 as an In-Circuit-Debugger (ICD). It uses the same
MPLAB IDE workspace and project as Lesson 5. Set T0CON assignment back to the
“no prescale” statement if it was changed in the last lesson.
3.6.1
The PICkit 3 Debug Express uses some on-chip resources to enable debugging. The
resources are not available to the user application code.
3.6.1.1
• MCLR pin reserved for debugging; this pin cannot be used as digital I/O while
• The PGD and PGC port pins are reserved for programming and in-circuit debug-
• One stack level is used by the debugger and not available.
3.6.1.2
The PICkit™ 3 Debug Express uses program memory and file register locations in the
target device during debugging. These locations are not available for use by user code.
In the MPLAB IDE, registers marked with an “R” in register displays represent reserved
registers, as shown in Figure 3-26.
RESERVED ICD FILE REGISTER LOCATIONS IN THE PIC18F45K20
Key Concepts
debugging.
ging. Therefore, other functions multiplexed on these pins will not be available
during debug.
- An In-Circuit-Debugger like PICkit 3 uses some on-chip resources to enable
- Debugging also reserves one level of the hardware return address stack and
- Debugging allows the program to be run, halted, stepped-through statement
- The number of available breakpoints depends on the PIC microcontroller
Note:
debugging. These reserved file registers and program memory locations are
marked ‘R’ in the MPLAB IDE views, and are not available for use by the
user application.
two I/O pins.
by statement, and for breakpoints to be set on program statements.
being used.
Resources Reserved by the PICkit 3 Debug Express
GENERAL RESOURCES
PROGRAM AND DATA MEMORY RESOURCES
This lesson uses the project and source code from Lesson 5: Using Timer0.
PICkit™ 3 Debug Express Lessons
DS41370C-page 37