M37160M8 Datasheet, PDF (121/131 Pages) Renesas Technology Corp – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

M37160M8/MA/MF-XXXSP/FP,M37160EFSP/FP
Address 00FA16
I²C Clock Control Register
b7 b6 b5 b4 b3 b2 b1 b0
I²C clock control register (S2) [Address 00FA16]
B
Name
Functions
After reset R W
0 SCL frequency control Setup value Standard High speed
to bits
of CCR4–
clock clock mode
4 (CCR0 to CCR4)
CCR0
mode
00 to 02 Setup disabled Setup disabled
0 _RW
03
Setup disabled
333
04
Setup disabled
250
05
100
400 (See note)
06
83.3
166
5 SCL mode
specification bit
(FAST MODE)
500/CCR value 1000/CCR value
1D
17.2
34.5
1E
16.6
33.3
1F
16.1
32.3
(φ = at 4 MHz, unit : kHz)
0: Standard clock mode
1: High-speed clock mode
0 _RW
6 ACK bit
(ACK BIT)
0: ACK is returned.
1: ACK is not returned.
0 _RW
7 ACK clock bit
(ACK)
0: No ACK clock
1: ACK clock
0 RW
Notes 1. At 400kHz in the high-speed clock mode, the duty is as below .
“0” period : “1” period = 3 : 2
In the other cases, the duty is as below.
“0” period : “1” period = 1 : 1
2.At FSCIN = 4.43 MHz, φ = 8.86/2 MHz
Values shown in table is as below :
At FSCIN = 4.43 MHz, each value ✕ 8.86/8
Rev.1.01 2003.11.13 page 121 of 130