NEC 78K0 User Manual page 364

Cautions 1. When the Ring-OSC clock is selected as the clock supplied to the CPU, the clock of the Ring-
OSC oscillator is divided and supplied as the serial clock. At this time, the operation of serial
interface CSI10 is not guaranteed.
2. Do not write to CSIC10 while CSIE10 = 1 (operation enabled).
3. Clear CKP10 to 0 to use P10/SCK10/TxD0, P11/SI10/RxD0, and P12/SO10 as general-purpose
port pins.
4. The phase type of the data clock is type 1 after reset.
Remarks 1. Figures in parentheses are for operation with fx = 10 MHz
2. f : X1 input clock oscillation frequency
X
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CHAPTER 16 SERIAL INTERFACES CSI10 AND CSI11
User's Manual U15947EJ2V0UD
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