PIC16F1828T-I/SL View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16F1828T-I/SL

28/40/44-Pin, Low-Power, High-Performance Microcontrollers with nanoWatt XLP Technology

Microchip Technology 

PIC16(L)F1824/1828

28.2 Low-Voltage Programming Entry

Mode

The Low-Voltage Programming Entry mode allows the

PIC16F/LF1824/1828 devices to be programmed using

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

Configuration Word 2 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 7.3 “MCLR” for more

information.

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

the High-Voltage Programming mode.

28.3 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 28-2.

FIGURE 28-2:

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

Another connector often found in use with the PICkit™

programmers is a standard 6-pin header with 0.1 inch

spacing. Refer to Figure 28-3.

FIGURE 28-3:

PICKIT™ STYLE CONNECTOR INTERFACE

Pin 1 Indicator

Pin Description*

1

1 = VPP/MCLR

2

3

2 = VDD Target

4

3 = VSS (ground)

5

6

4 = ICSPDAT

5 = ICSPCLK

6 = No Connect

* The 6-pin header (0.100" spacing) accepts 0.025" square pins.

DS41419B-page 334

Preliminary

 2010 Microchip Technology Inc.

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