參數資料
型號: μPD703008
廠商: NEC Corp.
英文描述: 16/32 Bit RISC Microcontrollers(16/32位RISC微控制器)
中文描述: 16/32位RISC微控制器(16/32位的RISC微控制器)
文件頁數: 16/141頁
文件大?。?/td> 374K
代理商: ΜPD703008
CHAPTER 1 INTRODUCTION
4
1.4 CPU Configuration
Figure 1-1 shows the internal configuration of the V850 family.
Figure 1-1. Internal Configuration
The function of each hardware block is as follows:
CPU ·································
Executes almost all instructions such as address calculation, arithmetic and logical
operation, and data transfer in one clock by using a 5-stage pipeline. Contains dedicated
hardware such as a multiplier (16
×
16 bits) and a barrel shifter (32 bits/clock) to execute
complicated instructions at high speeds.
Internal ROM ···················
ROM or EPROM mapped from address 00000000H. Can be accessed by the CPU in
one clock during instruction fetch.
Internal RAM ···················
RAM mapped to a space preceding address FFFFEFFFH. Can be accessed by the CPU
in one clock during data access.
Internal peripheral I/O ·····
Peripheral I/O area mapped from address FFFFF000H.
BCU ·································
Starts a necessary bus cycle based on a physical address obtained by the CPU. If the
CPU does not issue a request for starting a bus cycle, the BCU generates a prefetch
address, and prefetches an instruction code. The prefetched instruction code is loaded
to an internal instruction queue.
BCU
CPU
Internal ROM
PC
Multiplier
16
×
16
32
32-bit barrel
shifter
Internal RAM
ROM/
PROM
System
register
General
register
32 bits
×
32
Prefetch
control
Bus
control
Instruction
queue
Internal bus
ALU
Internal
peripheral
I/O
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