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S1C63666 TECHNICAL MANUAL
EPSON
153
APPENDIX S5U1C63000P1 MANUAL (PERIPHERAL CIRCUIT BOARD FOR S1C63666)
(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".
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Monitor
∗
DONE: The monitor pin outputs a high while the
LED lights when initialization of this board
completes without problems.
Name
DONE *
VDC0
VDC1
VDC2
VDC3
OSCC
CLKCHG
LPWR
SVDS0
SVDS1
SVDS2
SVDON
CMPON
–
–
–
LED No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
LED
Name
DONE *
VDC0
VDC1
VDC2
VDC3
OSCC
CLKCHG
LPWR
SVDS0
SVDS1
SVDS2
SVDON
CMPON
–
–
–
Monitor pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1
3
5
7
9
11
13
15
2
4
6
8
10
12
14
16
LED
(5) CR oscillation frequency adjusting control
When OSC3 is set for a CR oscillation circuit by mask option, this control allows you to adjust the
oscillation frequency. The oscillation frequency can be adjusted in the range of approx. 100 kHz to 8
MHz. Note that the actual IC does not operate with all of these frequencies; consult the technical
manual for the S1C63666 to select the appropriate operating frequency.
Not used
Not used
OSC3 rough adjustment
OSC3 fine adjustment
(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.
OSC3 monitor pin (red)
Not used
GND pin (black)
RESET
(7) RESET switch
This switch initializes the internal circuits of this board and feeds a reset signal to the ICE.
Содержание S1C63666
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