HD6412350 Hitachi, HD6412350 Datasheet - Page 611

• Manufacturer Part Number: HD6412350
• Description: (HD6412350 / HD6432351) 16-BIT MICROCONTROLLER
• Manufacturer: Hitachi

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 ø clock cycles after TDR is updated by the DMAC or DTC. Misoperation
may occur if the transmit clock is input within 4 ø 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
D3
D4
D5
D6
D7
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