AN136 Silicon_Laboratories, AN136 Datasheet

AN136

Manufacturer Part Number

AN136

Description

Production Programming Options FOR Silicon LABS Devices

Manufacturer

Silicon_Laboratories

Datasheet

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Relevant Devices

This application note applies to all C8051Fxxx devices.

Introduction

This application note gives an overview of produc-

tion programming options available for Silicon

Labs devices. The two main categories for pro-

gramming uninitialized devices are in-system pro-

gramming and pre-programming. The most

appropriate type of programming depends on the

number of devices being programmed and whether

access is available to the debug pins (JTAG or C2

interface) of the device. Once devices have been

programmed once, they may be updated from

application code using the UART or another inter-

face.

Key Points

•

In-System Programming

In-system programming involves programming

devices after installation in the end system. In this

scenario, access to the debug pins (JTAG or C2

Rev. 1.1 12/03

A B S

R O D U C T I O N

When programing a device in-system, it is

necessary that both the programming “Master”

and the device being programmed share a

common ground.

Devices only need to be programmed once.

Firmware updates can be received over any

communications protocol supported by the

system.

The Silicon Labs (EC2) Serial Adapter used for

development can also be used to program

devices during production. Silicon Labs

provides the tools necessary to streamline the

debugging platform for production.

E V I C E S

R O G R A M M I N G

interface) is provided in the end system to enable

connection to a programming “Master”. This pro-

gramming “Master” can be a Silicon Labs Serial

Adapter (EC2), custom hardware, or for JTAG

devices, a JTAG Boundary Scan test system that

supports the programming of Silicon Labs devices.

Designing a System that

Supports In-System

Programming

Whether using the Silicon Labs Serial Adapter

(EC2) or building a custom programming “Mas-

ter”, an in-system programmable system needs to

provide access to the debug pins (JTAG or C2

interface) of the target device.

The pins required to program JTAG devices are

TCK, TMS, TDI, TDO and GND. It is necessary

that both the programming “Master” and the device

being programmed share a common ground.

For C2 devices, access to C2CK, C2D, and GND

are required. See Application Note AN024 on the

Applications Web Page for more information on

pin sharing with the C2 Interface. Also, target

board schematics for C2 devices (e.g. C8051F30x-

TB, C8051F31x-TB, etc.) can be used as examples.

The schematic for each target board is available in

its User’s Guide. The User’s Guide for each Silicon

Labs Target Board can be downloaded from the

Development Tools Web Page on the Silicon Labs

Website.

Silicon Labs (EC2) Serial

Adapter and Interface Utilities

The Silicon Labs EC2 Serial Adapter used for sys-

tem development can also be used to program

devices during production.

P T I O N S F O R

I L I C O N

AN136

AN136-DS11

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