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Keil Cx51 Product Brochure Keil µVision3 Product Brochure Keil development tools for the 8051 Microcontroller Architecture support every level of software developer from the professional applications engineer to the student just learning about embedded software development.

The industry-standard Keil C Compilers, Macro Assemblers, Debuggers, Real-time Kernels, Single-board Computers, and Emulators support all 8051 derivatives and help you get your projects completed on schedule.
Feature Products
PK51 CA51 A51
Device Support
Classic 8051 Devices
Far Memory Types    
Analog Devices ADuC812 Family    
Dallas Semiconductor 390 Family    
NXP (Philips) 51MX Family    
µVision IDE
Compilation Tools
AX51 Assembler    
CX51 C Compiler    
LX51 Linker    
OHX51 Object-HEX Converter    
A51 Assembler
BL51 Code-Banking Linker
OH51 Object-HEX Converter
OC51 Banked Object Converter
C51 Compiler  
ISD51 In-System Debugger    
FlashMON51 Target Monitor    
MON51 Target Monitor    
MON390 Target Monitor    
MONADI Target Monitor    
RTX51 Tiny Real-Time Kernel    
System Requirements
View System Requirements View System Requirements View System Requirements

1. AX51 supports the 8051, Dallas 390, and NXP (founded by Philips) 51MX instruction sets.
2. CX51 supports the NXP 51MX instruction set.
3. LX51 is required for Far Memory, Dallas Contiguous Mode, and NXP 51MX.
4. OHX51 is required for programs linked with LX51.

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