CHAPTER 1 INTRODUCTION
19
User’s Manual U15195EJ5V0UD
Table 1-2. Differences Between V850E/IA1 and V850E/IA2 Register Setting Values
Register Name
V850E/IA1
V850E/IA2
System wait control register (VSWC)
12H
02H
Timer 1/timer 2 clock selection register
(PRM02)
00H or 01H
01H (initial value 00H)
Remark
For details, refer to the user’s manual of each product.
1.2 Features
Number of instructions
80
Minimum instruction execution time
25 ns (@ internal 40 MHz operation)
General-purpose registers 32 bits
×
32 registers
Instruction set
V850E1 (NB85E) CPU
Signed multiplication (32 bits
×
32 bits
→
64 bits): 1 or 2 clocks
Saturated operation instructions (with overflow/underflow detection function)
32-bit shift instruction: 1 clock
Bit manipulation instructions
Long/short format load/store instructions
Signed load instructions
Memory space
4 MB linear address space (shared by program and data)
Memory block division function: 2 MB/block
Programmable wait function
Idle state insertion function
External bus interface
16-bit data bus (address/data multiplexed)
16-/8-bit bus sizing function
External wait function
Internal
memory
Part Number
Internal ROM
Internal RAM
µ
PD703114
128 KB (mask ROM)
6 KB
µ
PD70F3114
128 KB (flash memory)
6 KB
Interrupts/exceptions
External interrupts: 16 (including NMI)
Internal interrupts: 42 sources
Exceptions:
1
source
8 levels of priority can be specified
Содержание PD703114
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