Renesas rl78 User Manual
RL78/G1A
CHAPTER 6 TIMER ARRAY UNIT
R01UH0305EJ0200 Rev.2.00
204
Jul 04, 2013
Figure 6-11. Format of Timer Mode Register mn (TMRmn) (3/4)
Address: F0190H, F0191H (TMR00) to F019EH, F019FH (TMR07) After reset: 0000H R/W
Symbol 15
14
13
12
11
10
9 8 7 6 5 4 3 2 1 0
TMRmn
(n = 2, 4, 6 )
CKS
mn1
CKS
mn0
0
CCS
mn
MAST
ERmn
STS
mn2
STS
mn1
STS
mn0
CIS
mn1
CIS
mn0
0 0
MD
mn3
MD
mn2
MD
mn1
MD
mn0
Symbol 15
14
13
12
11
10
9 8 7 6 5 4 3 2 1 0
TMRmn
(n = 1, 3)
CKS
mn1
CKS
mn0
0
CCS
mn
SPLIT
mn
STS
mn2
STS
mn1
STS
mn0
CIS
mn1
CIS
mn0
0 0
MD
mn3
MD
mn2
MD
mn1
MD
mn0
Symbol 15
14
13
12
11
10
9 8 7 6 5 4 3 2 1 0
TMRmn
(n = 0, 5, 7)
CKS
mn1
CKS
mn0
0
CCS
mn
0
Note
STS
mn2
STS
mn1
STS
mn0
CIS
mn1
CIS
mn0
0 0
MD
mn3
MD
mn2
MD
mn1
MD
mn0
CIS
mn1
CIS
mn0
Selection of TImn pin input valid edge
0 0
Falling
edge
0 1
Rising
edge
1 0
Both edges (when low-level width is measured)
Start trigger: Falling edge, Capture trigger: Rising edge
1 1
Both edges (when high-level width is measured)
Start trigger: Rising edge, Capture trigger: Falling edge
If both the edges are specified when the value of the STSmn2 to STSmn0 bits is other than 010B, set the CISmn1
to CISmn0 bits to 10B.
MD
mn3
MD
mn2
MD
mn1
Operation mode of channel n
Corresponding function
Count operation of
TCR
0
0
0
Interval timer mode
Interval timer / Square wave
output / Divider function / PWM
output (master)
Counting down
0 1 0
Capture
mode
Input pulse interval
measurement
Counting up
0
1
1
Event counter mode
External event counter
Counting down
1 0 0
One-count
mode
Delay counter / One-shot pulse
output / PWM output (slave)
Counting down
1
1
0
Capture & one-count mode
Measurement of high-/low-level
width of input signal
Counting up
Other than above
Setting prohibited
The operation of each mode varies depending on MDmn0 bit (see next table).
Note Bit 11 is fixed at 0 of read only, write is ignored.
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))