PIC16F616-ISLASHMLQTP datasheet(125/180 Pages) MICROCHIP

125 / 180 page

Preliminary

DS41288C-page 123

PIC16F610/616/16HV610/616

12.10 In-Circuit Serial Programming™

The

PIC16F610/616/16HV610/616 microcontrollers

can be serially programmed while in the end

application circuit. This is simply done with five

connections for:

•clock

•data

• power

• ground

• programming voltage

This allows customers to manufacture boards with

unprogrammed devices and then program the micro-

controller just before shipping the product. This also

allows the most recent firmware or a custom firmware

to be programmed.

The device is placed into a Program/Verify mode by

holding the RA0 and RA1 pins low, while raising the

MCLR (VPP) pin from VIL to VIHH. See the “PIC12F60X/

12F61X/16F61X Memory Programming Specification”

(DS41284) for more information. RA0 becomes the

programming data and RA1 becomes the programming

clock. Both RA0 and RA1 are Schmitt Trigger inputs in

Program/Verify mode.

A typical In-Circuit Serial Programming connection is

shown in Figure 12-10.

FIGURE 12-10:

TYPICAL IN-CIRCUIT

SERIAL PROGRAMMING

CONNECTION

12.11 In-Circuit Debugger

Since in-circuit debugging requires access to three

pins, MPLAB® ICD 2 development with an 14-pin

device is not practical. A special 28-pin PIC16F610/

616/16HV610/616 ICD device is used with MPLAB ICD

2 to provide separate clock, data and MCLR pins and

frees all normally available pins to the user.

A special debugging adapter allows the ICD device to

be used in place of a PIC16F610/616/16HV610/616

device. The debugging adapter is the only source of the

ICD device.

When the ICD pin on the PIC16F610/616/16HV610/

616 ICD device is held low, the In-Circuit Debugger

functionality is enabled. This function allows simple

debugging functions when used with MPLAB ICD 2.

When the microcontroller has this feature enabled,

some of the resources are not available for general

use. Table 12-9 shows which features are consumed

by the background debugger.

TABLE 12-9:

DEBUGGER RESOURCES

For more information, see “MPLAB® ICD 2 In-Circuit

Debugger User’s Guide” (DS51331), available on

Microchip’s web site (www.microchip.com).

FIGURE 12-11:

28-PIN ICD PINOUT

Note:

To erase, the device VDD must be above

the Bulk Erase VDD minimum given in the

“PIC12F615/12HV615/16F616/16HV616

Memory

Programming

Specification”

(DS41284)

External

Connector

Signals

To Normal

Connections

To Normal

Connections

PIC16F610/16HV610

VDD

VSS

MCLR/VPP/RA3

RA1

RA0

+5V

VPP

CLK

Data I/O

* Isolation devices (as required)

PIC16F616/16HV616

Resource

Description

I/O pins

ICDCLK, ICDDATA

Stack

1 level

Program Memory

Address 0h must be NOP

700h-7FFh

28-Pin PDIP

In-Circuit Debug Device

VDD

CS0

CS1

CS2

RA5

RA4

GND

RA0

RA1

SHUNTEN

RC3

RA2

RC0

RA3

RC5

RC4

RC1

RC2

ICDDATA

ICD

ICDCLK

ICDMCLR

PIC16F616-I/MLQTP Datasheet(PDF) 125 Page - Microchip Technology

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