Renesas RL78/G15 User Manual

RL78/G15 CHAPTER 12 SERIAL ARRAY UNIT
R01UH0959EJ0110 Rev.1.10 Page 502 of 765
Mar 7, 2023
Table 12-4. Selection of Operation Clock For Simplified I
2
C
SMRmn
Register
SPSm Register Operation Clock (f
MCK
)
Note 1
CKSmn
PRS
m13
PRS
m12
PRS
m11
PRS
m10
PRS
m03
PRS
m02
PRS
m01
PRS
m00
f
CLK
= 16 MHz
0 X X X X 0 0 0 0 f
CLK
16 MHz
X X X X 0 0 0 1 f
CLK
/2 8 MHz
X X X X 0 0 1 0 f
CLK
/2
2
4 MHz
X X X X 0 0 1 1 f
CLK
/2
3
2 MHz
X X X X 0 1 0 0 f
CLK
/2
4
1 MHz
X X X X 0 1 0 1 f
CLK
/2
5
500k Hz
X X X X 0 1 1 0 f
CLK
/2
6
250 kHz
X X X X 0 1 1 1 f
CLK
/2
7
125 kHz
X X X X 1 0 0 0 f
CLK
/2
8
62.5 kHz
X X X X 1 0 0 1 f
CLK
/2
9
31.25 kHz
X X X X 1 0 1 0 f
CLK
/2
10
15.63 kHz
X X X X 1 0 1 1 f
CLK
/2
11
7.81 kHz
1 0 0 0 0 X X X X f
CLK
16 MHz
0 0 0 1 X X X X f
CLK
/2 8 MHz
0 0 1 0 X X X X f
CLK
/2
2
4 MHz
0 0 1 1 X X X X f
CLK
/2
3
2 MHz
0 1 0 0 X X X X f
CLK
/2
4
1 MHz
0 1 0 1 X X X X f
CLK
/2
5
500 kHz
0 1 1 0 X X X X f
CLK
/2
6
250 kHz
0 1 1 1 X X X X f
CLK
/2
7
125 kHz
1 0 0 0 X X X X f
CLK
/2
8
62.5 kHz
1 0 0 1 X X X X f
CLK
/2
9
31.25 kHz
1 0 1 0 X X X X f
CLK
/2
10
15.63 kHz
1 0 1 1 X X X X f
CLK
/2
11
7.81 kHz
Other than above Setting prohibited
Note 1. When changing the clock selected for f
CLK
(by changing the system clock control register (CKC) value), do so
after having stopped (serial channel stop register m (STm) = 000FH) the operation of the serial array unit
(SAU).
Remark 1. X: Don’t care
Remark 2. m: Unit number (m = 0), n: Channel number (n = 0, 1), mn = 00, 01

Renesas RL78/G15 Specifications

General

Brand	Renesas
Model	RL78/G15
Category	Microcontrollers
Language	English