PIC16F1512T-E/SO View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16F1512T-E/SO

28-Pin Flash Microcontrollers with XLP Technology

Microchip Technology 

PIC16(L)F1512/3

23.0 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

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 ICSPCLK pin is the clock input. For more information

on ICSP™ refer to the “PIC16(L)F151X/152X Memory

Programming Specification” (DS41442).

23.1 High-Voltage Programming Entry

Mode

The device is placed into High-Voltage Programming

Entry mode by holding the ICSPCLK and ICSPDAT

pins low then raising the voltage on MCLR/VPP to VIHH.

23.2 Low-Voltage Programming Entry

Mode

The Low-Voltage Programming Entry mode allows the

PIC16(L)F1512/3 devices to be programmed using

VDD only, without high voltage. When the LVP bit of

Configuration Words is set to ‘1’, the low-voltage ICSP

programming entry is enabled. To disable the

Low-Voltage ICSP mode, the LVP bit must be

programmed to ‘0’.

Entry into the Low-Voltage Programming Entry mode

requires the following steps:

1. MCLR is brought to VIL.

2. A 32-bit key sequence is presented on

ICSPDAT, while clocking ICSPCLK.

Once the key sequence is complete, MCLR must be

held at VIL for as long as Program/Verify mode is to be

maintained.

If low-voltage programming is enabled (LVP = 1), the

MCLR Reset function is automatically enabled and

cannot be disabled. See Section 6.3 “Low-Power

Brown-out Reset (LPBOR)” for more information.

The LVP bit can only be reprogrammed to ‘0’ by using

the High-Voltage Programming mode.

23.3 Common Programming Interfaces

Connection to a target device is typically done through

an ICSP™ header. A commonly found connector on

development tools is the RJ-11 in the 6P6C (6-pin, 6

connector) configuration. See Figure 23-1.

FIGURE 23-1:

ICD RJ-11 STYLE

CONNECTOR INTERFACE

ICSPDAT

VDD

2 4 6 NC

ICSPCLK

13 5

Target

VPP/MCLR

VSS

PC Board

Bottom Side

Pin Description*

1 = VPP/MCLR

2 = VDD Target

3 = VSS (ground)

4 = ICSPDAT

5 = ICSPCLK

6 = No Connect

DS40001624C-page 266

 2012-2014 Microchip Technology Inc.

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