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APPENDIX S5U1C63000P MANUAL (PERIPHERAL CIRCUIT BOARD FOR S1C63404/454/455/458/466/P466)
(4) Register monitor pins
These pins correspond one-to-one to the registers listed below. The pin outputs a high for logic "1"
and a low for logic "0".
Monitor
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
∗1 DONE: The monitor pin outputs a high while the LED lights when
∗2 SVDS0–3, SVDON:
(5) CR oscillation frequency adjusting control
When OSC1 and OSC3 respectively are set for a CR oscillation circuit and a CR/ceramic oscillation
circuit by a mask option, this control allows you to adjust the oscillation frequency. The oscillation
frequency can be adjusted in the range of approx. 20 kHz to 500 kHz for OSC1 and approx. 100 kHz to
8 MHz for OSC3. Note that the actual IC does not operate with all of these frequencies; consult the
technical manual for the S1C63404/454/455/458/466/P466 to select the appropriate operating
frequency.
(6) CR oscillation frequency monitor pins
These pins allow you to monitor the clock waveform from the CR oscillation circuit with an oscillo-
scope. Note that these pins always output a signal waveform whether or not the oscillation circuit is
operating.
112
Name
LED No.
*1
DONE
1
–
2
VDC
3
OSCC
4
CLKCHG
5
–
6
–
7
–
8
–
9
*2
SVDS0
10
*2
SVDS1
11
*2
SVDS2
12
*2
SVDS3
13
*2
SVDON
14
LPWR
15
VCCHG
16
initialization of this board completes without problems.
Used for the S1C404/458/466/P466.
RESET
LED
Name
*1
DONE
–
VDC
OSCC
CLKCHG
–
–
–
–
*2
SVDS0
*2
SVDS1
*2
SVDS2
*2
SVDS3
*2
SVDON
LPWR
VCCHG
OSC1 rough adjustment
OSC1 fine adjustment
OSC3 rough adjustment
OSC3 fine adjustment
OSC3 monitor pin (red)
OSC1 monitor pin (red)
GND pin (black)
EPSON
1
2
1
3
2
4
3
5
4
6
5
7
6
8
7
9
8
10
11
9
10
12
13
11
12
14
15
13
14
16
15
16
LED
Monitor pin
S1C63454 TECHNICAL MANUAL
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