Hitachi H8/300L Series Manual page 67

Single-chip microcomputer
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The H8/3814 Series microcomputers are
8-bit single chip microcomputers that can
directly drive liquid crystal display (LCD).
The H8/3812, H8/3813, and H8/3814
microcomputers integrate, around an
H8/300L CPU core, a rich set of peripheral
functions, including 16, 24, and 32 kbytes
of ROM, 512 bytes of RAM, an LCD
(liquid crystal display) controller/driver,
timers, two serial communications
interfaces, an A/D converter, and I/O ports.
These products are particularly suited for use as the embedded microprocessor in
applications that require LCD.
Additionally, the H8/3814 Series includes a ZTAT™ (zero turn around time) version of the
H8/3834 that allows users to freely write programs to the on-chip PROM.
• 16, 24, and 32 kbytes of on-chip ROM
• 512 bytes of on-chip RAM
• LCD controller/driver
— Forty segment pins and four common pins built in
— Four duty ratios: Static, 1/2, 1/3 and 1/4
— External segment expansion (however, only with static and 1/2 duty)
— Segment pins: Can be switched to be used as general purpose port pins in 4-pin units
• Three 8- and 16-bit multi-function timer channels
— Timer A: 8-bit interval timer or clock timer
— Timer F: 16-bit output compare timer or event counter
— Timer G: 8-bit interval timer or input capture timer
• Serial communications interface (two channels)
— SCI1: 8- or 16-bit clock synchronous transfers
— SCI3: 8-bit clock synchronous/asynchronous transfers (includes a multi-processor
communications function)
H8/3812, H8/3813, H8/3814


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