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Chapter 9
Timer / Counter (Real Time Pulse Unit)
Preliminary User’s Manual U14913EE1V0UM00
(2)
Timer E count clock/control edge selection registers 0 to 2 (CSE0 to CSE2)
The CSEn register is used to specify the timer TMEn count clock and the control valid edge (n = 0
to 2).
This register can be read/written in 16-, 8-, or 1-bit units.
Figure 9-15: Timer E Count Clock/Control Edge Selection Registers 0 to 2 (CSE0 to CSE2)
Remark:
y = 0, 1
n = 0 to 2
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Address
Initial
value
CSE0
0
0
0
0 TES1E1 TES1E0 TES0E1 TES0E0 CESE1 CESE0 CSE12 CSE11 CSE10 CSE02 CSE01 CSE00 FFFFF642H 0000H
CSE1
0
0
0
0 TES1E1 TES1E0 TES0E1 TES0E0 CESE1 CESE0 CSE12 CSE11 CSE10 CSE02 CSE01 CSE00 FFFFF682H 0000H
CSE2
0
0
0
0 TES1E1 TES1E0 TES0E1 TES0E0 CESE1 CESE0 CSE12 CSE11 CSE10 CSE02 CSE01 CSE00 FFFFF6C2H 0000H
Bit Position
Bit Name
Function
11, 10, 9, 8
TESyE1,
TESyE0
Specifies the valid edge of the corresponding timer base counter TBASEyn count
clock signal (TCOUNTEy).
TESyE1
TESyE0
Valid Edge
0
0
Falling edge
0
1
Rising edge
1
0
Setting prohibited
1
1
Both rising and falling edges
7, 6
CESE1,
CESE0
Specifies the valid edge of the external clear input signal (TCLREn).
CESE1
CESE0
Valid Edge
0
0
Falling edge
0
1
Rising edge
1
0
Through input
1
1
Both rising and falling edges
5 to 3,
2 to 0
CSEy0,
CSEy1,
CSEy2
Selects internal count clock of the time base counter TBASEyn.
CSEy2
CSEy1
CSEy0
Count Clock
0
0
0
f
CPU
/2
0
0
1
f
CPU
/4
0
1
0
f
CPU
/8
0
1
1
f
CPU
/16
1
0
0
f
CPU
/32
1
0
1
f
CPU
/64
1
1
0
f
CPU
/128
1
1
1
Selects input signal from external clock input
pin (TIEn) as clock.
Содержание V850E/CA1 ATOMIC
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