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RL78/G1A CHAPTER 6 TIMER ARRAY UNIT
R01UH0305EJ0200 Rev.2.00 262
Jul 04, 2013
Figure 6-59. Example of Set Contents of Registers to Measure Input Signal High-/Low-Level Width
(a) Timer mode register mn (TMRmn)
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TMRmn
CKSmn1
1/0
CKSmn0
1/0
0
CCSmn
0
M/S
Note
0
STSmn2
0
STSmn1
1
STSmn0
0
CISmn1
1
CISmn0
1/0
0
0
MDmn3
1
MDmn2
1
MDmn1
0
MDmn0
0
Operation mode of channel n
110B: Capture & one-count
Setting of operation when counting is started
0: Does not generate INTTMmn when
counting is started.
Selection of TImn pin input edge
10B: Both edges (to measure low-level width)
11B: Both edges (to measure high-level width)
Start trigger selection
010B: Selects the TImn pin input valid edge.
Setting of MASTERmn bit (channels 2, 4, 6)
0: Independent channel operation function.
Setting of SPLITmn bit (channels 1, 3)
0: 16-bit timer mode.
Count clock selection
0: Selects operation clock (f
MCK).
Operation clock (f
MCK) selection
00B: Selects CKm0 as operation clock of channel n.
10B: Selects CKm1 as operation clock of channel n.
01B: Selects CKm2 as operation clock of channels 1, 3 (This can only be selected channels 1 and 3).
11B: Selects CKm3 as operation clock of channels 1, 3 (This can only be selected channels 1 and 3).
(b) Timer output register m (TOm)
Bit n
TOm
TOmn
0
0: Outputs 0 from TOmn.
(c) Timer output enable register m (TOEm)
Bit n
TOEm
TOEmn
0
0: Stops the TOmn output operation by counting operation.
(d) Timer output level register m (TOLm)
Bit n
TOLm
TOLmn
0
0: Cleared to 0 when TOMmn = 0 (master channel output mode).
(e) Timer output mode register m (TOMm)
Bit n
TOMm
TOMmn
0
0: Sets master channel output mode.
Note TMRm2, TMRm4, TMRm6: MASTERmn bit
TMRm1, TMRm3: SPLITmn bit
TMRm0, TMRm5, TMRm7: Fixed to 0
Remark m: Unit number (m = 0), n: Channel number (n = 0 to 7 (however, timer input pin (TImn), timer output pin
(TOmn) : n = 0, 1, 3 to 7))