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Hitachi H8/300L Series Manual page 70

Single-chip microcomputer
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H8/3834, H8/3836, H8/3837
The H8/3834 Series microcomputers are
8-bit single chip microcomputers that can
directly drive liquid crystal display (LCD).
The H8/3834, H8/3836, and H8/3837
microcomputers integrate, around an
H8/300L CPU core, a rich set of peripheral
functions, including 32, 48, and 60 kbytes
of ROM, 1, 2, and 2 kbytes of RAM, an
LCD (liquid crystal display) controller/
driver, timers, three serial communications
interfaces, a 14-bit PWM, 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 H8/3834 Series includes ZTAT™ (zero turn around time) versions of the
H8/3834 and H8/3837 that allow users to freely write programs to the on-chip PROM.
• 32, 48, and 60 kbytes of on-chip ROM
• 1, 2, and 2 kbytes 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
— Segment pins: Can be switched to be used as general purpose port pins in 4-pin units.
• Five 8- and 16-bit multi-function timer channels
— Timer A: 8-bit interval timer or clock timer
— Timer B: 8-bit reload timer or event counter
— Timer C: 8-bit reload timer or event counter
— Timer F: 16-bit output compare timer or event counter
— Timer G: 8-bit interval timer or input capture timer
• Serial communications interface (three channels)
— SCI1: 8- or 16-bit clock synchronous transfers
— SCI2: 8-bit clock synchronous transfers (includes a 32-byte data buffer)
— SCI3: 8-bit clock synchronous/asynchronous transfers (includes a multi-processor
communications function)



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