cx51.pdf

Cx5 1

805 1 /25 1 Development Tools

The Keil Cx5 1 ANSI C Complier supports all classic

and extended 805 1 device variants. Compiler

extensions provide full access to all CPU resources

and support up to 1 6MB memory. The Keil Cx5 1

generates code with the efficiency and speed of

hand-optimized assembly. New compiler and linker

optimizations shrink programs into the smallest

single-chip devices.

Supports all 805 1 Variants

Up to 1 6MB Memory

Easy-to-use IDE Supports

Complete Development Cycle

Complete Device Support

Including Peripheral Simulation

The Keil µ Vision4 IDE fully integrates Cx5 1 Version 9

and provides control of the Compiler, Assembler,

Real-Time OS, Project Manager, and Debugger in a

single, intelligent environment. With support for all

805 1 devices and full compatibility with emulators

and third-party tools, Keil Cx5 1 is clearly the best

choice for your 805 1 project.

Drivers for Flexible Debugging

in Target Hardware

Code Size Optimization

Large Model - Code Banking

100%

-22%

75%

50%

25%

To start your project, just select the device from the µ Vision Device Database.

Optimize Level

Keil Cx5 1 is the unsurpassed industry standard 805 1

C Compiler. 1 0 optimization levels give you the ability to

put more features into less memory space and provide

the utmost code density for cost-sensitive single-chip

designs.

Using level 1 0 with the LX5 1 Extended Linker optimizes

a complete application. LX5 1 creates sub-routines for

common code blocks and replaces LJMP/LCALL

instructions with shorter AJMP/ACALL instructions

wherever possible.

For the selected device, µ Vision Debugger provides dialogs with detailed

peripheral information that are available with simulation and target debugging.

www.keil.com

Development Tools Overview

Cx51 Compiler

Cx51 Compiler Highlights

The Keil 805 1 and 25 1 development kits contain different C

Compilers for optimum support of device variants. Cx5 1 is

used as a generic term for:

C5 1 Compiler for classic 805 1 devices, 805 1 IP cores, Dallas

Contiguous Mode, and other extended devices

CX5 1 Compiler for Philips 805 1 MX and SmartMX

C25 1 Compiler for 25 1 devices and 25 1 IP cores

The Cx5 1 Compiler gives complete access to all hardware

components within your C source code. For example, you can

control peripherals using SFR registers, write optimum interrupt

code with CPU register banks, accelerate variable access with

the data, idata, or pdata memory type, and use efficient bit

operations or atomic bit manipulation.

805 1 devices provide various physical memory spaces: fast

DATA space, up to 1 6MB large XDATA space, and CODE space

for constants. F Cx5 1 offers:

Three well-defined memory models that provide the default

memory allocation for variables

Generic pointers that access all memory spaces

Memory types that control the space for variables or pointer

accesses. Memory-specific pointers reduce RAM

requirements, and optimize program execution

Support for all 805 1 derivatives and variants

Fast 32-bit IEEE floating-point math

Efficient interrupt code and direct register bank control

Bit-addressable objects

Sophisticated syntax checking and detailed warnings

Use of AJMP and ACALL instructions

Memory banking for code and variables beyond 64KB

Global program-wide register optimization

Common code block sub-routine optimization

Use of multiple data pointers

Use of on-chip arithmetic units

Generic and memory-specific pointers

Re-entrant functions and register bank independent code

Extensive debug and source browse information

Simple assembly language interface

or flexible memory usage,

LX51 Extended Linker

The standard Code Banking Linker lets you increase the

program space of a classic 805 1 device beyond 64KB. The LX5 1

Extended Linker expands device support and adds further

functionality to the Keil Cx5 1 Compiler:

n Linker Code Packing analyzes an entire application and

generates sub-routines for common code blocks even on

code banking applications. Short AJMP and ACALL

instructions replace longer LJMP and LCALL when possible

n Incremental Linkage allows you to split programs into

several functional parts as it is required for multi-application

programming or FLASH ROM updates

n Far Memory Support gives you access to 1 6MB of

variable space even on a classic 805 1 device and the far

memory type may be used for special memory types

n Detailed Data Type Checking is performed across all

public symbol definitions and improves software quality

RTX Tiny2 Real-Time Kernel

The RTX Tiny2 multi-tasking real-time kernel makes

implementing complex, time-critical software projects easy. RTX

Tiny2 is royalty-free and is fully integrated into the Keil Cx5 1

tool chain. It works on all classic 805 1 device variants, and

supports multiple DPTR and arithmetic units.

RTX Tiny2 is the successor of the popular RTX operating

system and provides:

Single chip and code banking support

Round robin and cooperative task switching

Task management with create and delete

Timeout, Signal, and Ready events for task switching

Interrupt support for sending signals to tasks

The µ Vision debugger includes a kernel-aware dialog for RTX Tiny2 that displays

complete information about all the tasks in your program.

2 Keil 8051/25 Development Tools

Program Debugging

µVision Debugger

The µ Vision Debugger provides source-level debugging and

includes traditional features like simple and complex

breakpoints, watch windows, and execution control as well as

sophisticated features like performance analyzer, code coverage,

and logic analyzer.

The µ Vision Debugger may be configured as a Simulator where

programs run on your PC; or as Target Debugger where

programs run on your target hardware.

The cycle-accurate µ Vision Simulator is a software-only product

that simulates most features of your 805 1 /25 1 device without

actually having target hardware. µ Vision simulates a wide range

of peripherals including I/O Ports, CAN, I ² C, SPI, UART, A/D

and D/A converter, E ² PROM, and interrupt controller. The

simulated peripherals depend on the device selected from the

µ Vision Device Database.

Benefits of µVision Device Simulation

Simulation allows software testing on your desktop with

no hardware environment

Early software debugging on a functional basis improves

overall software reliability

Simulation allows breakpoints that are not possible with

hardware debuggers

Simulation allows for optimal input signals (hardware

debuggers add extra noise)

Signal functions are easily programmed to reproduce

complex, real-world input signals

Single-stepping through signal processing algorithms is

possible. External signals stop when the CPU halts

It is easy to test failure scenarios that would destroy real

hardware peripherals

The disassembly window

shows CPU instructions

and trace history

Peripheral dialogs display

status information and aid

in driver development

The Logic Analyzer shows

changes to variables and

signals over time

The Project Window shows

all project files, and helps

you manage your project

The Performance Analyzer

displays execution times

for program blocks

Memory and watch

windows display program

variables

The µVision development platform is easy to use and it helps you to quickly create embedded programs that work. The µVision editor and debugger are integrated in a single

application that provides a seamless embedded project development environment for editing, simulating, Flash programming and testing in target hardware.

Keil 8051/251 Development Tools 3

Keil 8051/251 Development Tools

Keil

µ Vision combines project management, source editing,

program debugging, and accurate device simulation in a single

powerful environment. Multiple drivers are included for

debugging applications running on target hardware.

PK5 1

Professional Developer’s Kit

Monitor-5 1 for evaluation boards and target hardware

MON390 for devices running in Dallas contiguous mode

ISD5 1 in-system debugger runs on standard 805 1 hardware

and is linked with the user application

EPM900 emulator/programmer for Philips LPC900 device

series

FlashMON for Atmel single-chip microcontrollers

MONADI for Analog Devices MicroConverter

ULINK2 driver for Infineon XC800, NXP 952/954, and

STMicroelectronics µ PSD3000 devices

Keil Cx5 1 Compiler

RTX Tiny2 RTOS Kernel

µVision

Device Database & IDE

µVision

Debugger & Analysis Tools

Other target hardware is supported by third-party drivers.

Device Peripheral Simulation

The Keil PK5 1 Professional Developer’s Kit is a complete

software development environment for classic and extended

805 1 microcontrollers. It includes the tools you need to create,

translate, and debug C and Assembly source files. Keil PK5 1 is

easy to learn and use, yet powerful enough for the most

demanding 805 1 applications.

The integrated Device Database configures the tools options

for each specific microcontroller. For a complete list of

supported devices, refer to

www.keil.com/dd.

The Keil ULINK2 Debug Adapter connects to a wide range of evaluation boards. For

more information refer to www.keil.com/ulink

Europe:

+49 89/45 60 40 - 20

sales.intl@keil.com

support.intl@keil.com

United States:

+1 800 348 8051

sales.us@keil.com

support.us@keil.com

All brand names or product names are the property of their respective holders. Neither the whole nor any part of the information contained in, or the product described in, this document may be adapted or reproduced in any material form except with the prior

written permission of the copyright holder. The product described in this document is subject to continuous developments and improvements. All particulars of the product and its use contained in this document are given in good faith. All warranties implied or

expressed, including but not limited to implied warranties of satisfactory quality or fitness for purpose are excluded. This document is intended only to provide information to the reader about the product. To the extent permitted by local laws ARM shall not be liable

for any loss or damage arising from the use of any information in this document or any error or omission in such information.

Program examples and detailed technical information are available from your distributor and our web site (www.keil.com).

www.keil.com

Keil 8051/251 | 01.11