CHAPTER 4: NAME AND FUNCTION OF EACH PART
6
EPSON
S5U1C63004P MANUAL (PERIPHERAL CIRCUIT
BOARD FOR S1C63454/63455/63458/63466)
CHAPTER
4 N
AME
AND
F
UNCTION
OF
E
ACH
P
ART
This chapter describes the name and function of each part of the S5U1C63004P board.
VLCD(V2V/V3V)
OSC3(CR)Adj
OSC1(CR)Adj
VSVD
VCCHG
VDC
OSCC
DBON
VDSEL
SVDS0
SVDS2
SVDON
LPWR
CLKCHG
HLON
VCSEL
SVDS1
SVDS3
RESET
GND
fOSC1(CR)
fOSC3(CR)
SEIKO EPSON CORP.
(3)
(2)
(7)
(4)
(5)
(6)
(1)
Fig. 4.1 Top view of the S5U1C63004P board
(1) RESET switch
This switch resets the internal circuits of the S5U1C63004P 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
Unused
LPWR
VCCHG
Unused
(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
