H8S-2350 RENESAS [Renesas Technology Corp], H8S-2350 Datasheet - Page 643

• Manufacturer Part Number: H8S-2350
• Description: 16-Bit Single-Chip Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

Restrictions on Use of DMAC or DTC
When an external clock source is used as the serial clock, the transmit clock should not be
input until at least 5 clock cycles after TDR is updated by the DMAC or DTC. Misoperation
may occur if the transmit clock is input within 4 clocks after TDR is updated. (Figure 13.22)
When RDR is read by the DMAC or DTC, be sure to set the activation source to the relevant
SCI reception end interrupt (RXI).
SCK
TDRE
Serial data
Note: When operating on an external clock, set t >4 clocks.
Figure 13.22 Example of Clocked Synchronous Transmission by DTC
t
LSB
D0
D1
D2
Section 13 Serial Communication Interface (SCI)
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Rev. 3.00 Sep 15, 2006 page 609 of 988
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REJ09B0330-0300
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