Section 1 Overview
1.1 Overview
The H8/300L Series is a series of single-chip microcomputers (MCU: microcomputer unit), built
around the high-speed H8/300L CPU and equipped with peripheral system functions on-chip.
Within the H8/300L Series, the H8/3867 Series and H8/3827 Series comprise single-chip
microcomputers equipped with a controller/driver. Other on-chip peripheral functions include six
timers, a 14-bit pulse width modulator (PWM), two serial communication interface channels, and an
A/D converter. Together, these functions make the H8/3864 Series ideally suited for embedded
applications in systems requiring low power consumption and LCD display. Models in the H8/3867
and H8/3827 Series are the H8/3862 and H8/3822, with on-chip 16-kbyte ROM and 1-kbyte RAM,
the H8/3863 and H8/3823, with 24-kbyte ROM and 1-kbyte RAM, the H8/3864 and H8/3824, with
32-kbyte ROM and 2-kbyte RAM, the H8/3865 and H8/3825, with 40-kbyte ROM and 2-kbyte
RAM, the H8/3866 and H8/3826, with 48-kbyte ROM and 2-kbyte RAM, and the H8/3867 and
H8/3827, with 60-kbyte ROM and 2-kbyte RAM.
The H8/3867 and H8/3827 are also available in a ZTAT™* version with on-chip PROM which can
be programmed as required by the user.
Table 1-1 summarizes the features of the H8/3867 Series and H8/3827 Series.
Note: * ZTAT (Zero Turn Around Time) is a trademark of Hitachi, Ltd.
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: 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
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