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PIC16F1825T-I/ST 开发手册 - Microchip（微芯）
制造商:
Microchip（微芯）
分类:
微控制器
封装:
TSSOP-14
描述:
PIC16 系列 1 KB RAM 14 kB 闪存 8 位 表面贴装 微控制器 - TSSOP-14
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PIC16F1825T-I/ST数据手册
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AN1310
DS01310A-page 2 2010 Microchip Technology Inc.
IMPLEMENTATION BASICS
This section gives the three basic steps for setting up
and using the bootloader for those already familiar with
bootloader/application development.
Subsequent sections provide overview and more
detailed information relating to these steps. Those
sections include:
• “Firmware Overview”
• “Hardware Considerations”
• “Bootloader Mode Considerations”
• “Application Mode Considerations”
• “Software Design”
Step 1:
Compile and Program Bootloader
Firmware
More detailed information on this step is provided in:
• “Firmware Overview”
• “Hardware Considerations”
• “Bootloader Mode Considerations”
• “Software Design”
By default, the serial bootloader installation provides
bootloader firmware source code in the PC path:
FIGURE 1: CONFIGURATION BITS DIALOG BOX
To compile and program the bootloader firmware:
1. Open the appropriate PIC16 or PIC18 bootloader
project in the MPLAB IDE software.
2. Select Configure>Select Device...
and choose
the PIC device to be used (for example,
PIC18F87J90
).
3. To specify Configuration bit settings, select
Configure>Configuration Bits...
.
The dialog box, shown in Figure 1, appears.
4. Specify settings for each category.
Table 1 gives suggestions for selected bits that
can get the bootloader initially working.
5. Compile and program the bootloader firmware
into the microcontroller.
The bootloader must be programmed into the
PIC device using an ICSP™ programming tool,
such as MPLAB
®
ICD 3 or a socketed program-
mer like the MPLAB PM3 Universal Device
Programmer.
C:\Microchip Solutions\Serial
Bootloader AN1310 vX.XX\PICxx Bootloader\
TABLE 1: CONFIGURATION BIT
SUGGESTIONS
Category Setting
Watchdog Timer
(1)
“Disabled”
Extended Instruction
Set Enable bit
“Disabled”
Oscillator Selection
bits
(Select according to hardware.
Higher speeds generally
enable more baud rates.)
Fail-Safe Clock
Monitor Enable bit
“Enabled”, if available
Low-Voltage
Program (LVP)
“Disabled”, if applicable
Table Read-Protect “Disabled”, if applicable
Note 1: On most PIC devices, the Watchdog Timer
can be re-enabled in application firmware
after start-up.
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