Table 1-1 Features
Item
Description
High-speed H8/300L CPU
CPU
•
General-register architecture
General registers: Sixteen 8-bit registers (can be used as eight 16-bit
registers)
•
Operating speed
Max. operating speed: 3 Mhz
Add/subtract: 0.67 µs (operating at 3 Mhz)
Multiply/divide: 4.67 µs (operating at 3 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
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•
13 external interrupt sources (IRQ4 to IRQ0, WKP7 to WKP0)
24 internal interrupt sources
Clock pulse
generators
Two on-chip clock pulse generators
•
•
System clock pulse generator: 0.4 to 6 Mhz
Subclock pulse generator: 32.768 kHz, 38.4 kHz
Power-down
modes
Seven power-down modes
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•
•
•
•
•
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Sleep (high-speed) mode
Sleep (medium-speed) mode
Standby mode
Watch mode
Subsleep mode
Subactive mode
Active (medium-speed) mode
2
ETC [ ETC ]
