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Hitachi H8/300L Series Manual page 96

Single-chip microcomputer
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Peripheral Functions
SCI2 (H8/3614 Series, H8/3714 Series, H8/3724 Series, and H8/3754 Series)
Function: The SCI2 has a 32-byte internal data buffer, and supports clock synchronous
transfers in units of 1 to 32 bytes.
Features: • Automatic transfers of up to 32 bytes
• Either an internal clock (ø/8, ø/4, or ø/2) or an external clock can be used as the
clock source.
• Interrupts are generated on transfer completion and errors.
Block Diagram
System clock ø
and R/W controller
Serial data buffer
<Notation>
STAR:
Start address register
EDAR:
End address register
IRRS2:
Serial communications interface 2 interrupt request flag
Prescaler S
SCR2
Address decoder
(32 bytes)
Internal data bus
Shift clock
generation
circuit
Bit counter
STAR
Byte counter
Comparator
EDAR
Shift register
96
SCK
2
IRRS2
SO
2
SI
/CS
2

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