2
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
µ
s (operating at 8 MHz)
Multiply/divide: 1.75
µ
s (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
36 interrupt sources
•
13 external interrupt sources (IRQ
4
to IRQ
0
, WKP
7
to WKP
0
)
•
23 internal interrupt sources
Clock pulse generators
Two on-chip clock pulse generators
•
System clock pulse generator: 1 to 16 MHz
•
Subclock pulse generator: 32.768 kHz, 38.4 kHz
Power-down modes
Seven power-down modes
•
Sleep (high-speed) mode
•
Sleep (medium-speed) mode
•
Standby mode
•
Watch mode
•
Subsleep mode
•
Subactive mode
•
Active (medium-speed) mode