34
Chapter 1
Introduction
User’s Manual U16580EE3V1UD00
1.2 Device
Features
•
Number of instructions:
96
•
Instruction execution time:
15.625 ns (@
φ
= 64 MHz)
•
General-purpose registers:
32 bits × 32
•
Instruction set:
V850E1 CPU (NU85EFC)
(compatible with V850 plus additional powerful instructions
for reducing code and increasing execution speed)
Single-precision floating point arithmetic operation
Signed multiplication (16 bits
×
16 bits
→
32 bits or
32 bits
×
32 bits
→
64 bits): 1 to 2 clocks
Saturated operation instructions (with overflow/underflow
detection function)
32-bit shift instructions: 1 clock
Bit manipulation instructions
Load/store instructions with long/short format
Signed load instructions
•
Memory space:
64 MB linear address space (common program/data)
Chip select output function: 4 spaces
Memory block division function: 2, 4, or 8 MB/block
Programmable wait function
Idle state insertion function
•
External bus interface
Note1
:
32-bit data bus (address/data separated)
22-bit address bus
4 programmable chip select areas
32-/16-/8-bit bus sizing function
External wait function
•
Internal memory:
μ
PD70F3187
μ
PD70F3447
Flash ROM:
512 KB
384 KB
RAM:
32 KB
24 KB
•
Interrupts/exceptions: External
interrupts:
up to 14 (including NMI)
Internal interrupts:
up to 85 sources
Exceptions: 1
source
8 programmable interrupt priority levels
•
Memory access controller
Note1
: SRAM
controller
•
DMA controller:
8 channels
Transfer mode: Single transfer
Transfer units: 8 bits or 16 bits (depending on peripheral)
Maximum transfer count: 256 (2
8
)
Transfer target: internal RAM
↔
I/O
Transfer request: On-chip peripheral I/O
DMA transfer termination interrupt
•
I/O lines:
Input ports:
5
I/O ports:
137
Содержание V850E/PH2
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