参数资料
型号: SAX-XC878M-16FFI5V
厂商: INFINEON TECHNOLOGIES AG
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 24 MHz, RISC MICROCONTROLLER, PQFP64
封装: PLASTIC, TQFP-64
文件页数: 61/141页
文件大小: 2385K
代理商: SAX-XC878M-16FFI5V
XC878CLM
Functional Description
Data Sheet
19
V1.1, 2009-08
3
Functional Description
Chapter 3 provides an overview of the XC878 functional description.
3.1
Processor Architecture
The XC878 is based on a high-performance 8-bit Central Processing Unit (CPU) that is
compatible with the standard 8051 processor. While the standard 8051 processor is
designed around a 12-clock machine cycle, the XC878 CPU uses a 2-clock machine
cycle. This allows fast access to ROM or RAM memories without wait state. The
instruction set consists of 45% one-byte, 41% two-byte and 14% three-byte instructions.
The XC878 CPU provides a range of debugging features, including basic stop/start,
single-step execution, breakpoint support and read/write access to the data memory,
program memory and Special Function Registers (SFRs).
Figure 5 shows the CPU functional blocks.
Figure 5
CPU Block Diagram
Register Interface
ALU
UART
Core SFRs
16-bit Registers &
Memory Interface
Opcode Decoder
State Machine &
Power Saving
Interrupt
Controller
Multiplier / Divider
Opcode &
Immediate
Registers
Timer 0 / Timer 1
Internal Data
Memory
External SFRs
External Data
Memory
Program Memory
f
CCLK
Memory Wait
Reset
Legacy External Interrupts (IEN0, IEN1)
External Interrupts
Non-Maskable Interrupt
相关PDF资料
PDF描述
SAX-XC878M-13FFI5V 8-BIT, FLASH, 24 MHz, RISC MICROCONTROLLER, PQFP64
SAX-XC878-16FFA3V3 RISC MICROCONTROLLER, PQFP64
SB80486DX2SC50 32-BIT, 50 MHz, RISC PROCESSOR, PQFP208
SB80486SXSC33 32-BIT, 33 MHz, MICROPROCESSOR, PQFP208
SB80C186EC-20 16-BIT, 20 MHz, MICROPROCESSOR, PQFP100
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