2. Name and Function of Each Part
S5U1C17656T Manual
Seiko Epson Corporation
5
(Rev. 1.0)
2.2 Function of Each Part
2.2.1 Function of Jumper Switch
Table 2.2.1.1 Jumper Switch Function
Name
Type
Function
Factory setting
Optional setting
JP1
Soldered S1C17656 current consumption measurement (V
SS
)
1
Short-circuited
Open
1 To measure current consumption of the S1C17656, insert an ammeter between the jumper terminals.
2.2.2 Functions of Parts
Table 2.2.2.1 List of Major Parts and Their Function
Part name
Location
Function
IC
U1
S1C17656 (16-bit MCU)
LCD
LCD1
TN 30 segments
×
2 commons, 1/3 bias, 1/2 duty
Coin type battery holder BT1
CR2032 coin type battery holder
Crystal resonator
X1
32.768 kHz, MC-146 (7 pF)
Piezoelectric buzzer
BZ1
Ø = 12.2 mm
Resistors
R1–R6
5.6 MΩ, for charging/discharging touch keys
Connection terminal
Vdd
Through hole for degug interface Group 1
Connection terminal
#RESET
Through hole for degug interface Group 1
Connection terminal
GND_2
Through hole for degug interface Group 1
Connection terminal
Vpp
Through hole for degug interface Group 1
Connection terminal
DCLK
Through hole for degug interface Group 2
Connection terminal
GND_3
Through hole for degug interface Group 2
Connection terminal
DSIO
Through hole for degug interface Group 2
Connection terminal
DST2
Through hole for degug interface Group 2
Connection terminal
P00/SIN0
Through hole for connecting a serial communication device
Connection terminal
P01/SOUT0
Through hole for connecting a serial communication device
Connection terminal
GND_1
Through hole for connecting a serial communication device