CHAPTER 15 SERIAL INTERFACES CSI10 AND CSI11
User’s Manual U16899EJ2V0UD
333
Note Set the serial clock so that the following conditions are satisfied.
•
V
DD
= 4.0 to 5.5 V: Serial clock
≤
5 MHz
•
V
DD
= 3.3 to 4.0 V: Serial clock
≤
4.19 MHz
•
V
DD
= 2.7 to 3.3 V: Serial clock
≤
2.5 MHz
•
V
DD
= 2.5 to 2.7 V: Serial clock
≤
1.25 MHz
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 CSI11 is not guaranteed.
2. Do not write to CSIC11 while CSIE11 = 1 (operation enabled).
3. Clear CKP11 to 0 to use P02/SO11, P03/SI11, and P04/SCK11 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
X
: High-speed system clock oscillation frequency
Содержание MuPD78F0132H
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