R01UH0136EJ0210 Rev.2.10
Page 560 of 800
Jul 31, 2012
M16C/64A Group
25. Multi-master I
2
C-bus Interface
The start condition generation timing depends on the modes - standard clock mode or fast-mode.
Figure 25.7 shows the Start Condition Generation Timing.
Table 25.13 lists the Setup/Hold Time for Generating a Start/Stop Condition.
Figure 25.7
Start Condition Generation Timing
Table 25.13
Setup/Hold Time for Generating a Start/Stop Condition
Item
STSPSEL Bit
Standard Clock Mode
Fast-mode
fVIIC cycles
fVIIC = 4 MHz
fVIIC cycles
fVIIC = 4 MHz
Setup time
0 (short mode)
20
5.0
μ
s
10
2.5
μ
s
1 (long mode)
52
13.0
μ
s
26
6.5
μ
s
Hold time
0 (short mode)
20
5.0
μ
s
10
2.5
μ
s
1 (long mode)
52
13.0
μ
s
26
6.5
μ
s
BB bit
set/reset
time
-
3.375
μ
s
3.5
0.875
μ
s
-: 0 or 1
STSPSEL: Bit in the S2D0 register
SSC value: Value of bits SSC4 to SSC0 in the S2D0 register
Note:
1.
Example value when bits SSC4 to SSC0 are 11000b.
Write signal to the S00 register
SCLMM
SDAMM
Setup
Hold
Setup
BB bit
BB bit in the S10 register
SSC value
1
–
2
-------------------------------------
2
+
Содержание M16C/60 Series
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