Are Used As 16-Bit Timer/Event Counter - NEC PD78076 User Manual

Table 9-9. Interval Times when 2-Channel 8-Bit Timer/Event Counters (TM1 and TM2)

are Used as 16-Bit Timer/Event Counter

TCL13 TCL12 TCL11 TCL10
0 0 0 0
0 0 0 1
0 1 1 0
0 1 1 1
1 0 0 0
1 0 0 1
1 0 1 0
1 0 1 1
1 1 0 0
1 1 0 1
1 1 1 0
1 1 1 1
Other than above
Remarks 1. f : Main system clock oscillation frequency
X
2. MCS : Bit 0 of oscillation mode selection register (OSMS)
3. TCL10 to TCL13 : Bits 0 to 3 of timer clock select register 1 (TCL1)
4. Figures in parentheses apply to operation with at f
CHAPTER 9 8-BIT TIMER/EVENT COUNTERS 1 AND 2
Minimum Interval Time
MCS = 1 MCS = 0
TI1 input cycle
TI1 input cycle
2 x 1/f 2 2 x 1/f
X X
(400 ns) (800 ns)
2 2 x 1/f 2 3 x 1/f
X X
(800 ns) (1.6 s)
3 4
2 x 1/f 2 x 1/f
X X
(1.6 s) (3.2 s)
4 5
2 x 1/f 2 x 1/f
X X
(3.2 s) (6.4 s)
2 5 x 1/f 2 6 x 1/f
X X
(6.4 s) (12.8 s)
2 6 x 1/f 2 7 x 1/f
X X
(12.8 s) (25.6 s)
7 8
2 x 1/f 2 x 1/f
X X
(25.6 s) (51.2 s)
8 9
2 x 1/f 2 x 1/f
X X
(51.2 s) (102.4 s)
2 9 x 1/f 2 10 x 1/f
X X
(102.4 s) (204.8 s)
2 11 x 1/f 2 12 x 1/f
X X
(409.6 s) (819.2 s)
Setting prohibited
Maximum Interval Time
MCS = 1 MCS = 0
2 8 x TI1 input cycle
2 8 x TI1 input cycle
2 17 x 1/f 2 18 x 1/f
X X
(26.2 ms) (52.4 ms)
2 18 x 1/f 2 19 x 1/f
X X
(52.4 ms) (104.9 ms)
19 20
2 x 1/f 2 x 1/f
X X
(104.9 ms) (209.7 ms)
20 21
2 x 1/f 2 x 1/f
X X
(209.7 ms) (419.4 ms)
2 21 x 1/f 2 22 x 1/f
X X
(419.4 ms) (838.9 ms)
2 22 x 1/f 2 23 x 1/f
X X
(838.9 ms) (1.7 s)
23 24
2 x 1/f 2 x 1/f
X X
(1.7 s) (3.4 s)
24 25
2 x 1/f 2 x 1/f
X X
(3.4 s) (6.7 s)
2 25 x 1/f 2 26 x 1/f
X X
(6.7 s) (13.4 s)
2 27 x 1/f 2 28 x 1/f
X X
(26.8 s) (53.7 s)
= 5.0 MHz.
X
Resolution
MCS = 1 MCS = 0
TI1 input edge cycle
TI1 input edge cycle
2 x 1/f 2 2 x 1/f
X X
(400 ns) (800 ns)
2 2 x 1/f 2 3 x 1/f
X X
(800 ns) (1.6 s)
3 4
2 x 1/f 2 x 1/f
X X
(1.6 s) (3.2 s)
4 5
2 x 1/f 2 x 1/f
X X
(3.2 s) (6.4 s)
2 5 x 1/f 2 6 x 1/f
X X
(6.4 s) (12.8 s)
2 6 x 1/f 2 7 x 1/f
X X
(12.8 s) (25.6 s)
7 8
2 x 1/f 2 x 1/f
X X
(25.6 s) (51.2 s)
8 9
2 x 1/f 2 x 1/f
X X
(51.2 s) (102.4 s)
2 9 x 1/f 2 10 x 1/f
X X
(102.4 s) (204.8 s)
2 11 x 1/f 2 12 x 1/f
X X
(409.6 s) (819.2 s)
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