M30280F6HP RENESAS [Renesas Technology Corp], M30280F6HP Datasheet - Page 281

• Manufacturer Part Number: M30280F6HP
• Description: 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/Tiny SERIES
• Manufacturer: RENESAS [Renesas Technology Corp]

R
R
M
e
E
1
NOTES:
. v
J
6
Table 16.3 Setting values of S20 register and SCL frequency
Setting value of CCR4 to CCR0
0
CCR4 CCR3 CCR2 CCR1 CCR0
C
2
9
0
0
0
0
0
0
0
1
1
1
0 .
2 /
B
0
0
1. The duty of the SCL clock output is 50 %. The duty becomes 35 to 45 % only when high-speed
2. Each value of the SCL frequency exceeds the limit at V
3. The data formula of SCL frequency is described below:
8
0
4
G
J
clock mode is selected and the CCR value = 5 (400 kHz, at VIIC = 4 MHz). “H” duration of the
clock fluctuates from –4 to +2 I
–2 to +2 I
frequency does not increase because the “L” is extended instead of “H” reduction. These are the
values when the SCL clock synchronization by the synchronous function is not performed. The
CCR value is the decimal notation value of the CCR4 to CCR0 bits.
setting values, use V
Do not set 0 to 2 as the CCR value regardless of the VIIC frequency. Set 100 kHz (max.) in
standard clock mode and 400 kHz (max.) in high-speed clock mode to the SCL frequency by
setting the CCR4 to CCR0 bits.
7
a
o r
0 -
V
V
V
. n
0
0
0
0
0
0
0
1
1
1
u
IIC
IIC
IIC
2
3
p
0
, 1
/(8 x CCR value) Standard clock mode
/(4 x CCR value) High-speed clock mode (CCR value
/(2 x CCR value) High-speed clock mode (CCR value = 5)
0
(
M
2
0
1
2
0
6
0
0
0
0
1
1
1
1
1
1
C system clock cycles in high-speed clock mode. In the case of negative fluctuation, the
7
C
2 /
page 261
, 8
0
0
1
1
0
0
1
0
1
1
M
1
6
IIC
C
f o
2 /
= 4 MHz or less. Refer to Figure 16.6.
0
1
0
1
0
1
0
1
0
1
8
3
) B
8
5
2
C system clock cycles in standard clock mode, and fluctuates from
Standard clock mode
Setting disabled
Setting disabled
Setting disabled
500 / CCR value
SCL frequency (at V
100
83.3
17.2
16.6
16.1
-
-
(2)
(2)
(3)
IIC
IIC
=4MHz, unit : kHz)
= 4 MHz or more. When using these
16. MULTI-MASTER I
5)
High-speed clock mode
Setting disabled
Setting disabled
Setting disabled
333
250
1000 / CCR value
400
166
34.5
33.3
32.3
(3)
(1)
2
C bus INTERFACE
(3)