Renesas rl78 User Manual
RL78/G1A
CHAPTER 6 TIMER ARRAY UNIT
R01UH0305EJ0200 Rev.2.00
254
Jul 04, 2013
Figure 6-51. Example of Set Contents of Registers During Operation as Frequency Divider
(a) Timer mode register 00 (TMR00)
15
14
13
12
11
10
9 8 7 6 5 4 3 2 1 0
TMR00
CKS0n1
1/0
CKS0n0
0
0
CCS00
1
0
STS002
0
STS001
0
STS000
0
CIS001
1/0
CIS000
1/0
0
0
MD003
0
MD002
0
MD001
0
MD000
1/0
Operation mode of channel 0
000B: Interval timer
Setting of operation when counting is started
0: Neither generates INTTM00 nor inverts
timer output when counting is started.
1: Generates INTTM00 and inverts timer
output when counting is started.
Selection of TI00 pin input edge
00B: Detects falling edge.
01B: Detects rising edge.
10B: Detects both edges.
11B: Setting prohibited
Start trigger selection
000B: Selects only software start.
Count clock selection
1: Selects the TI00 pin input valid edge.
Operation clock (f
MCK
) selection
00B: Selects CK00 as operation clock of channel 0.
10B: Selects CK01 as operation clock of channel 0.
(b) Timer output register 0 (TO0)
Bit 0
TO0
TO00
1/0
0: Outputs 0 from TO00.
1: Outputs 1 from TO00.
(c) Timer output enable register 0 (TOE0)
Bit 0
TOE0
TOE00
1/0
0: Stops the TO00 output operation by counting operation.
1: Enables the TO00 output operation by counting operation.
(d) Timer output level register 0 (TOL0)
Bit 0
TOL0
TOL00
0
0: Cleared to 0 when TOM00 = 0 (master channel output mode)
(e) Timer output mode register 0 (TOM0)
Bit 0
TOM0
TOM00
0
0: Sets master channel output mode.
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