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Hitachi H8/300L Series Manual page 97

Single-chip microcomputer
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SCI2 (H8/3834 Series and H8/3927 Series)
Function: The SCI2 has a 32-byte internal data buffer, and supports 32-byte clock
synchronous data transfers in a single operation.
Features: • Data blocks of 32 bytes can be automatically transferred.
• One of seven internal clocks (ø/256, ø/64, ø/32, ø/16, ø/8, ø/4, and ø/2) or an
external clock can be used as the clock source.
• Interrupts are generated on transfer completion and errors.
• A transfer data interval can be left between each byte. The transfer interval can
be 56, 24, or 8 times the internal clock period.
• Transfer starts can be controlled from the chip select input.
• A strobe pulse can be output on each byte transfer.
Block Diagram
SCK
2
STRB
CS
SO
2
SI2
<Notation>
STAR:
Start address register
EDAR:
End address register
IRRS2:
Serial communications interface 2 interrupt request flag
Transmit/receive
control circuit
Serial data buffer
(32 bytes)
Prescaler S
STAR
EDAR
SCR2
SCSR2
97
Peripheral Functions
System clock ø
IRRS2

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