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Table 1.1
Features
Item
Specification
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 (5 MHz for HD64F38024 and H8/38024S
Group)
Add/subtract: 0.25 µs (operating at 8 MHz), 0.4
µ
s (operating at
φ
=
5 MHz)
Multiply/divide: 1.75 µs (operating at 8 MHz), 2.8
µ
s (operating at
φ
=
5 MHz)
Can run on 32.768 kHz or 38.4 kHz subclock (32.768 kHz only for
H8/38124 Group)
•
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
22 interrupt sources
•
13 external interrupt sources (IRQ
4
, IRQ
3
, IRQ
1
, IRQ
0
, WKP
7
to WKP
0
,
IRQAEC)
•
9 internal interrupt sources
Содержание H8/38024 Series
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