參數(shù)資料
型號(hào): SAL-XC866L-4FRA
廠商: INFINEON TECHNOLOGIES AG
元件分類: 微控制器/微處理器
英文描述: 8-BIT, FLASH, 75 MHz, MICROCONTROLLER, PDSO38
封裝: GREEN, PLASTIC, TSSOP-38
文件頁數(shù): 24/113頁
文件大小: 2289K
代理商: SAL-XC866L-4FRA
SAL-XC866
Functional Description
PRELIMINARY
Data Sheet
14
V1.0, 2011-02
3
Functional Description
3.1
Processor Architecture
The SAL-XC866 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 SAL-XC866 CPU uses a 2-clock
machine cycle. This allows fast access to ROM or RAM memories without wait state.
Access to the Flash memory, however, requires an additional wait state (one machine
cycle). The instruction set consists of 45% one-byte, 41% two-byte and 14% three-byte
instructions.
The SAL-XC866 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 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
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