Section 1 Overview
Rev. 6.00 Aug 04, 2006 page 2 of 680
REJ09B0145-0600
Table 1.1
Features
Item
Description
CPU
High-speed H8/300L CPU
•
General-register
architecture
General registers: Sixteen 8-bit registers (can be used as eight 16-bit
registers)
•
Operating
speed
Max. operating speed: 8 MHz
Add/subtract: 0.25 µs (operating at 8 MHz)
Multiply/divide: 1.75 µs (operating at 8 MHz)
Can run on 32.768 kHz or 38.4 kHz subclock
•
Instruction set compatible with H8/300 CPU
Instruction length of 2 bytes or 4 bytes
Basic arithmetic operations between registers
MOV instruction for data transfer between memory and registers
•
Typical
instructions
Multiply (8 bits
×
8 bits)
Divide
(16
bits
÷
8 bits)
Bit
accumulator
Register-indirect designation of bit position
Interrupts
37 interrupt sources
•
13 external interrupt sources (IRQ
4
to IRQ
0
, WKP
7
to WKP
0
)
•
24 internal interrupt sources
Clock pulse
generators
Two on-chip clock pulse generators
•
System clock pulse generator:
Maximum 16 MHz (H8/3847R Group, H8/38347 Group, and H8/38447
Group)
Maximum 10 MHz (H8/3847S Group)
•
Subclock pulse generator: 32.768 kHz, 38.4 kHz
Содержание H8/38342
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