CHAPTER 4: NAME AND FUNCTION OF EACH PART
6
EPSON
S5U1C63007P MANUAL (PERIPHERAL CIRCUIT
BOARD FOR S1C63557/63558/63567)
CHAPTER
4 N
AME
AND
F
UNCTION
OF
E
ACH
P
ART
This chapter describes the name and function of each part of the S5U1C63007P board.
RESET
GND
fOSC1(CR)
fOSC3(CR)
SEIKO EPSON CORP.
PRC63007
VSVD
VLCD(V2V/V3V)
OSC1
( CR
) Adj
OSC3
( CR
) Adj
VDC
OSCC
CLKCHG
DBON
HLON
VDSEL
VCSEL
SVDS0
SVDS1
SVDS2
SVDS3
SVDON
LPWR
VCCHG
TONE
FSKON
1
18
(3)
(2)
(7)
(4)
(5)
(6)
(1)
Fig. 4.1 Top view of the S5U1C63007P board
(1) RESET switch
This switch resets the internal circuits of the S5U1C63007P board, and supplies a reset signal to the
ICE.
(2) Register monitor LED
The LED lights up when the corresponding register contains logic 1 and goes out when the register
contains logic 0.
(3) Register monitor pin
The pin is driven high when the corresponding register contains logic 1 and driven low when the
register contains logic 0.
No.
1
2
3
4
Name
VDC
OSCC
CLKCHG
DBON
No.
5
6
7
8
Name
HLON
VDSEL
VCSEL
SVD0
No.
9
10
11
12
Name
SVD1
SVD2
SVD3
SVDON
No.
13
14
15
16
Name
LPWR
VCCHG
TONE
FSKON
(4) CR oscillation frequency monitor pin
This pin allows you to monitor on an oscilloscope the clock waveform generated by the CR oscillation
circuit. Output on this pin is always active regardless of how the oscillation circuit is controlled.
Name
GND
f
OSC1
(CR)
f
OSC3
(CR)
Function
Ground (V
SS
)
OSC1 CR oscillation clock
OSC3 CR oscillation clock
