Renesas RL78 Series User Manual page 193

RL78/G1D
Address: F01B6H, F01B7H (TPS0)
Symbol 15 14
TPSm 0 0
PRS PRS
m21 m20
0 0
0 1
1 0
1 1
PRS PRS
m31 m30
0 0
0 1
1 0
1 1
Note When changing the clock selected for f
stop timer array unit (TTm = 00FFH).
The timer array unit must also be stopped if the operating clock (f
from the TImn pin is selected.
Caution Be sure to clear bits 15, 14, 11, 10 to "0".
By using channels 1 and 3 in the 8-bit timer mode and specifying CKm2 or CKm3 as the operation clock, the
interval times shown in Table 7-4 can be achieved by using the interval timer function.
Table 7-4. Interval Times Available for Operation Clock CKSm2 or CKSm3
Clock
CKm2 f /2
CLK
2
f /2
CLK
4
f /2
CLK
6
f /2
CLK
8
CKm3 f /2
CLK
10
f /2
CLK
12
f /2
CLK
14
f /2
CLK
Note The margin is within 5 %.
Remarks 1. f : CPU/peripheral hardware clock frequency
CLK
2. For details of a signal of f
R01UH0515EJ0120 Rev.1.20
Dec 16, 2016
Figure 7-10. Format of Timer Clock Select register m (TPSm) (2/2)
After reset: 0000H
13 12 11 10
PRS PRS 0 0
m31 m30
f /2
CLK
2
f /2
CLK
4
f /2
CLK
6
f /2
CLK
8
f /2
CLK
10
f /2
CLK
12
f /2
CLK
14
f /2
CLK
10 µs




–
–
–
–
j
/2 selected with the TPSm register, see 7.5.1 Count clock (f
CLK
R/W
9 8 7 6
PRS PRS PRS PRS
m21 m20 m13 m12
Selection of operation clock (CKm2)
f = 2 MHz f = 5 MHz f
CLK CLK
1 MHz 2.5 MHz
500 kHz 1.25 MHz
125 kHz 313 kHz
31.3 kHZ 78.1 kHz
Selection of operation clock (CKm3)
f = 2 MHz f = 5 MHz f
CLK CLK
7.81 kHz 19.5 kHz
1.95 kHz 4.88 kHz
488 Hz 1.22 kHz
122 HZ 305 Hz
(by changing the system clock control register (CKC) value),
CLK
Note
Interval time (f
100 µs
–
–




–
–
CHAPTER 7 TIMER ARRAY UNIT
5 4 3 2
PRS PRS PRS PRS
m11 m10 m03 m02
Note
= 10 MHz f = 20 MHz f
CLK CLK
5 MHz 10 MHz
2.5 MHz 5 MHz
625 MHz 1.25 MHz
156 kHz 313 kHz
Note
= 10 MHz f = 20 MHz f
CLK CLK
39.1 kHz 78.1 kHz
9.77 kHz 19.5 kHz
2.44 kHz 4.88 kHz
610 Hz 1.22 kHz
) or the valid edge of the signal input
MCK
= 32 MHz)
CLK
1 ms
–
–
–
–




TCLK
1 0
PRS PRS
m01 m00
= 32 MHz
CLK
16 MHz
8 MHz
2 MHz
500 kHz
= 32 MHz
CLK
125 kHz
31.3 kHz
7.81 kHz
1.95 kHz
10 ms
–
–
–
–
–
–


).
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