PIC16F707 Datasheet, PDF (185/284 Pages) Microchip Technology – 40/44-Pin, Flash Microcontrollers with nanoWatt XLP and mTouch™ Technology

PIC16F707/PIC16LF707
22.0 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 “PIC16F707/PIC16LF707 Programming
Specification” (DS41405A).
Note:
The ICD 2 produces a VPP voltage greater
than the maximum VPP specification of the
PIC16F707/PIC16LF707. When using this
programmer, an external circuit, such as
the AC164112 MPLAB^® ICD 2 VPP volt-
age limiter, is required to keep the VPP
voltage within the device specifications.
FIGURE 22-1:
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 Microchip Technology Inc.
Preliminary
DS41418A-page 185