LC72140 データシートの表示（PDF） - SANYO -> Panasonic
部品番号
コンポーネント説明
メーカー
LC72140 Datasheet PDF : 15 Pages
| |||
LC72140, 72140M
Continued from preceding page.
Name
Function
DO and I/O5 output control data
Bits ULD, DT0, DT1, IL0 and IL1 control the mode of outputs DO and I/O5 as shown in Tables 6
and 7.
Table 6. DO and I/O5 output flag selection
ULD DT1 DT0
DO
I/O5
0
0
0 Unlock flag
0
0
1 Open
OUT5 flag. See Note 2.
0
1
0 End-UC flag. See note 1.
0
1
1 IN. See table 7.
1
0
0 Open
1
0
1 Open
1
1
0 End-UC flag
Unlock flag. See Note 2.
1
1
1 IN. See table 7.
ULD, DT0, DT1,
IL0, IL1
Notes
1. End-UC flags that general-purpose counter operation has finished.
2. Applicable only if I/O5 is set to be an output port.
Related bits
OUT5, I/O1,
I/O2, I/O5
CTS0, CTS1, CTE,
GT0, GT1
I/O1 to I/O5
OUT1 to OUT7
H/I6, L/I7
Figure 3. DO output state
Table 7. IN state selection
IL1
IL0
0
0
0
1
1
0
1
1
IN state
Open
I1 input
I2 input
DO goes LOW when I1 changes.
Notes
1. If I/O1 or I/O2 is set to be an output port, IN becomes open.
2. DO does not go LOW when the crystal oscillator has stopped.
Counter control
Bits CTS0 and CTS1 select the counter input as shown in Table 8.
Table 8. Counter input and measurement mode selection
Switch CTS1 CTS0 Input
Measurement
mode
Frequency
range
S1
1
× HCTR Frequency
0.4 to 25.0MHz
Input rms
sensitivity
40mV
S2
0
1 LCTR Frequency
10 to 500kHz 40mV
S3
0
0 LCTR Period
1Hz to 20kHz (Pulse)
Note
× =don't care
Bit CTE starts the counter when 1, and resets the counter, when 0.
Bits GT0 and GT1 select the measurement time in frequency measurement mode or the number
of periods to count in period measurement mode as shown in Tabel 9.
H/I6, L/I7
Table 9. Measurement duration selection
GT1 GT0
Frequency measurement
Measurement duration
(ms)
Wait time (ms)
Period measurement
Cycles
0
0
4
0
1
8
3 to 4
1
1
0
32
1
1
64
7 to 8
2
Input/output port control
Bits I/O1 to I/O5 set the direction of the ports. Each pin is an input when the corresponding bit is
0, and an output, when the bit is 1. All ports are set to be inputs after power-ON reset.
Output port data
Bits OUT1 to OUT7 set the output values of the O1 to O7 output ports. Each output is open or
HIGH when the corresponding bit is 1, and LOW, when the bit is 0. A bit is ignored if the
corresponding port is an input port or the unlock output.
Counter input control
Bits H/I6 and L/I7 select the operation of the HCTR/I6 and LCTR/I7 pins. When H/I6 is 0, HCTR/I6
is an input port, and when H/I6 is 1, HCTR/I6 is the HCTR input. When L/I7 is 0, LCTR/I7 is an
input port, and when L/I7 is 1, LCTR/I7 is the LCTR input.
OUT1 to OUT5,
ULD
I/O1 to I/O5, ULD
CTS0, CTS1
Continued on next page.
No.4464–8/15
Share Link: 