PIC16F720-EML View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16F720-EML

20-Pin Flash Microcontrollers

Microchip Technology 

PIC16(L)F720/721

20.0 IN-CIRCUIT SERIAL

PROGRAMMING™ (ICSP™)

ICSP™ programming allows customers to manufacture

circuit boards with unprogrammed devices. Programming

can be done after the assembly process, allowing the

device to be programmed with the most recent firmware

or a custom firmware. Five pins are needed for ICSP™

programming:

• ICSPCLK

• ICSPDAT

• MCLR/VPP

• VDD

• VSS

The device is placed into Program/Verify mode by

holding the ICSPCLK and ICSPDAT pins low then

raising the voltage on MCLR/VPP from 0V to VPP. In

Program/Verify mode the program memory, user IDs and

the Configuration Words are programmed through serial

communications. The ICSPDAT pin is a bidirectional I/O

used for transferring the serial data and the ISCPCLK pin

is the clock input. For more information on ICSP™ refer

to the “PIC16F72x/PIC16LF72x Programming

Specification” (DS41332).

FIGURE 20-1:

TYPICAL CONNECTION FOR ICSP™ PROGRAMMING

External

Programming

Signals

VDD

VPP

GND

Data

Clock

VDD

10k

Device to be

Programmed

VDD

MCLR/VPP

VSS

ICSPDAT

ICSPCLK

*

*

*

To Normal Connections

* Isolation devices (as required).

 2010-2013 Microchip Technology Inc.

DS41430D-page 169

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