![Melec C-875 Instruction Manual Download Page 74](http://html1.mh-extra.com/html/melec/c-875/c-875_instruction-manual_1767048074.webp)
- 74 -
12-11.EA/EB Clock Input Timing
(1) When 90゚ phase difference clocks are input:
EA
PULSE COUNTER
DIFFERENTIAL COUNTER
EB
t1>(150×N)ns
t1>(200×N)ns
t1
t1
t1
t1
t2>(330×N)ns
t2>(430×N)ns
t
>(660×N)ns t
>(860×N)ns
cyc
cyc
t2
t2
However, N is a multiplier.
cyc
t
*The count timing of the PULSE COUNTER and DIFFERENTIAL COUNTER is as shown below.
Each is counted at
or
.
UP COUNT
DOWN COUNT
When the multiplier is 1:
-XEA
-XEB
UP COUNT
DOWN COUNT
When the multiplier is 2:
-XEA
-XEB
UP COUNT
DOWN COUNT
When the multiplier is 4:
-XEA
-XEB
(2) When independent clocks for each direction are input: (Counted at the edge marked ↓)
-XEA
t1>150ns (PULSE COUNTER)
t
≧330ns(PULSE COUNTER)
cyc
-XEB
t1>200ns (DIFFERENTIAL COUNTER)
t1
t1
t1
t1
t
≧430ns(DIFFERENTIAL COUNTER)
cyc
cyc
cyc
t
t
12-12.RDYINT Timing (INTA#)
BUSY in
BUSY in
①
③
①
STATUS1
STATUS1
IOW#
②
Or
IOR#
④
RDYINT
⑤
RDYINT
⑤
t1
t2
t3
t4
t1<50ns
t3<50ns
t2<150ns
t4<100ns
①: Indicates that a command is executed.
②: Indicates a new command is written.
③: Indicates that a new command is executed.
④: Indicates that STATUS1 is read out.
⑤: Indicates that an interrupt signal is generated. Interrupt signal enable or disable is specified
by the SPEC INITIALIZE1 command. For details, refer to 6-4.
Summary of Contents for C-875
Page 98: ... 98 2 M TYPE 3 H TYPE ...