CHAPTER 10 SERIAL INTERFACE FUNCTION
User’s Manual U13850EJ6V0UD
290
m x T + t
R
+ t
F
m/2 x T
t
F
t
R
m/2 x T
SCLn
SCLn inversion
SCLn inversion
SCLn inversion
The selection clock is set using a combination of the SMCn, CLn1, and CLn0 bits of IIC clock selection register
n (IICCLn), the CLXn bit of IIC function expansion register n (IICXn), and IICCEn1 and the IICCEn0 bits of IIC
clock expansion register n (IICCEn) (n = 0, 1).
Table 10-3. Selection Clock Setting
IICCEn
IICXn
IICCLn
Bit 1
Bit 0
Bit 0
Bit 3
Bit 1
Bit 0
IICCEn1 IICCEn0
CLXn
SMCn
CLn1
CLn0
Selection Clock
(f
XX
/m)
Settable Main Clock Frequency (f
XX
)
Range
Operation Mode
x
x
1
1
0
x
f
XX
/12
4.0 MHz to 4.19 MHz
x
x
0
1
0
x
f
XX
/24
4.0 MHz to 8.38 MHz
x
x
0
1
1
0
f
XX
/48
8.0 MHz to 16.67 MHz
0
1
0
1
1
1
f
XX
/36
12.0 MHz to 13.4 MHz
1
0
0
1
1
1
f
XX
/54
16.0 MHz to 20.0 MHz
Note
n = 0
TM2 output/18
TM2 setting
0
0
0
1
1
1
n = 1
TM3 output/18
TM3 setting
High-speed mode
(SMCn = 1)
x
x
0
0
0
0
f
XX
/44
2.0 MHz to 4.19 MHz
x
x
0
0
0
1
f
XX
/86
4.19 MHz to 8.38 MHz
x
x
0
0
1
0
f
XX
/172
8.38 MHz to 16.67 MHz
0
1
0
0
1
1
f
XX
/132
12.0 MHz to 13.4 MHz
1
0
0
0
1
1
f
XX
/198
16.0 MHz to 20.0 MHz
Note
n = 0
TM2 output/66
TM2 setting
0
0
0
0
1
1
n = 1
TM3 output/66
TM3 setting
Other than above
Setting prohibited
Normal mode
(SMCn = 0)
Note
Only in the V850/SB1 and the H versions of the V850/SB2.
Remarks 1.
n = 0, 1
2.
x: don’t care
3.
When the output of the timer is selected as the clock, it is not necessary to set the P26/TO2/TI2 and
P27/TO3/TI3 pins in the timer output mode.