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Hitachi H8/300L Series Manual page 61

Single-chip microcomputer
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The H8/3724 Series microcomputers are
8-bit single chip microcomputers that can
directly drive vacuum fluorescent displays
The H8/3723, H8/3724, H8/3725, and
H8/3726 microcomputers integrate, around
an H8/300L CPU core, a rich set of
peripheral functions, including 24, 32, 40,
and 48 kbytes of ROM, 384, 512, 640, and
1024 bytes of RAM, a VFD (vacuum
fluorescent display) controller/driver,
timers, two serial communications interfaces, a 14-bit PWM, an A/D converter, and I/O
ports. Since these microcomputers include high breakdown voltage pins that can directly
drive VFD panels, they are particularly suited for use in applications that require VFD.
Additionally, the H8/3724 Series includes ZTAT™ (zero turn around time) versions of the
H8/3724 and H8/3726 that allow users to freely write programs to the on-chip PROM.
• 24, 32, 40, and 48 kbytes of on-chip ROM
• 384, 512, 640, and 1024 bytes of on-chip RAM
• VFD controller/driver
— Digit pins: 1 to 16 pins
— Segment pins: 1 to 28 pins (of which 8 also function as digit pins)
— Function supporting a variable number of display digits
— Eight level dimmer function
• Five 8-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 D: 8-bit event counter
— Timer E: 8-bit reload timer
• Serial communications interface (two channels)
— SCI1: 8- or 16-bit clock synchronous transfers
— SCI2: 8-bit clock synchronous transfers (includes a 32-byte data buffer)
H8/3723, H8/3724, H8/3725, H8/3726



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