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R01UH0336EJ0102 Rev.1.02
Page 35 of 1538
Jul 17, 2014
V850E2/PG4-L
Section 1 Introduction
1.7.2
Internal Units
(1)
CPU
Processing of almost all instructions is executed in a single clock cycle under
7-stage pipeline control.
The CPU includes a multiplier (16 bits × 16 bits
32 bits, or 32 bits × 32 bits
64 bits) and barrel shifter (32 bits) to speed up complicated instruction
processing.
(2)
DMA Controller (DMAC)
These controllers transfer data between memory and peripheral I/O. Each
module has two transfer modes: single transfer and single step transfer (DMA).
(3)
ROM
The ROM consists of code flash memory and data flash memory. Memory
capacity is given in the following table.
The CPU is able to access ROM in a single clock cycle when fetching
instructions.
(4)
RAM
Mappings of RAM are listed below.
(5)
Interrupt Controller (INTC)
This module handles peripheral I/O and external hardware interrupt requests
(INTP9-0). These interrupts can be prioritized at 16 levels to control multiple
forms of handling for the interrupt sources.
Table 1-2
Memory Capacity and Addresses of Code Flash and Data Flash
Product Name
Data Flash Memory
Capacity
Address Range
Code Flash
Memory Capacity
PD70F4154
PD70F4155
16 Kbytes
0200_0000
H
to 0200_3FFF
H
384 Kbytes
0000_0000
H
to 0005_FFFF
H
Table 1-3
RAM Capacities and Address Ranges
Product Name
RAM
Capacity
Address Range
µPD70F4154
µPD70F4155
24 Kbytes
FEDF_A000
H
to FEDF_FFFF
H