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PIC16F720-I/P 用户编程技术手册 - Microchip（微芯）
制造商:
Microchip（微芯）
分类:
微控制器
封装:
DIP-20
描述:
20引脚闪存单片机采用nanoWatt XLP技术 20-Pin Flash Microcontrollers with nanoWatt XLP Technology
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PIC16F720-I/P数据手册
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2011 Microchip Technology Inc. Advance Information DS41409B-page 1
PIC16(L)F720/721
This document includes the
programming specifications for the
following devices:
1.0 OVERVIEW
The PIC16F/LF720 and PIC16F/LF721 devices are
programmed using In-Circuit Serial Programming™
(ICSP™). This programming specification applies to
the PIC16F/LF720 and PIC16F/LF721 devices in all
packages.
With the exception of memory size and the voltage
regulator, all other aspects of the PIC16F/LF720 and
PIC16F/LF721 devices are identical.
1.1 Hardware Requirements
PIC16F/LF720 and PIC16F/LF721 devices require one
power supply for V
DD and one for MCLR/VPP. (See
Section 8.0 “Electrical Specifications” for more
details.)
1.2 Pin Utilization
Five pins are needed for ICSP™ programming. The
pins are listed in Table 1-1.
TABLE 1-1: PIN DESCRIPTIONS DURING PROGRAMMING
•PIC16F720
• PIC16LF720
•PIC16F721
• PIC16LF721
Pin Name
During Programming
Function Pin Type Pin Description
RA1 ICSPCLK I Clock Input – Schmitt Trigger Input
RA0 ICSPDAT I/O Data Input/Output – Schmitt Trigger Input
MCLR
/VPP Program/Verify mode P
(1)
Program Mode Select/Programming power supply
VDD VDD P Power Supply
V
SS VSS P Ground
Legend: I = Input, O = Output, P = Power
Note 1: To activate the Program/Verify mode, high voltage needs to be applied to MCLR/VPP input. Since the
MCLR
/VPP is used for a level source, MCLR/VPP does not draw any significant current.
PIC16(L)F720/721 Flash Memory Programming Specification
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