NEC 78014Y Series, User Manual

Page: 272 / 547

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CHAPTER 15 SERIAL INTERFACE CHANNEL 0 (
µ
PD78014 Subseries)
272
Figure 15-4. Timer Clock Select Register 3 Format
Symbol 7 6 5 4 3 2 1 0 Address When Reset R/W
TCL3 TCL37 TCL36 TCL35 TCL34 TCL33 TCL32 TCL31 TCL30 FF43H 88H R/W
TCL33 TCL32 TCL31 TCL30 Serial Interface Channel 0
Serial Clock Selection
0 1 1 0 f
X
/2
2 Note
0 1 1 1 f
X
/2
3
(1.25 MHz)
1 0 0 0 f
X
/2
4
(625 kHz)
1 0 0 1 f
X
/2
5
(313 kHz)
1 0 1 0 f
X
/2
6
(156 kHz)
1 0 1 1 f
X
/2
7
(78.1 kHz)
1 1 0 0 f
X
/2
8
(39.1 kHz)
1 1 0 1 f
X
/2
9
(19.5 kHz)
Other than above Setting prohibited
TCL37 TCL36 TCL35 TCL34 Serial Interface Channel 1
Serial Clock Selection
0 1 1 0 f
X
/2
2 Note
0 1 1 1 f
X
/2
3
(1.25 MHz)
1 0 0 0 f
X
/2
4
(625 kHz)
1 0 0 1 f
X
/2
5
(313 kHz)
1 0 1 0 f
X
/2
6
(156 kHz)
1 0 1 1 f
X
/2
7
(78.1 kHz)
1 1 0 0 f
X
/2
8
(39.1 kHz)
1 1 0 1 f
X
/2
9
(19.5 kHz)
Other than above Setting prohibited
Note Can be set only when the main system clock oscillate at 4.19 MHz or less.
Caution If TCL3 is to be rewritten in data other than identical data, the timer operation must be stopped first.
Remarks 1. f
X
: Main system clock oscillation frequency
2. Values in parentheses apply to operation with f
X
= 10.0 MHz.