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CHAPTER 2 PIN FUNCTIONS
User’s Manual U14701EJ3V0UD
2.2.19 V
LC0
to V
LC2
These are LCD driving voltage pins. Individually connect to capacitors (recommended value: 0.47
μ
F) externally
between V
LC0
and GND, V
LC1
and GND, V
LC2
and GND to supply LCD driving voltage corresponding to each bias to
the inside of V
LC0
to V
LC2
pins.
V
LC0
: Three times of V
LC2
output voltage
V
LC1
: Two times of V
LC2
output voltage
V
LC2
: Reference voltage
2.2.20 V
LCDC
This is an LCD controller/driver reference voltage adjustment pin. This pin is used for fine-tuning the LCD driving
voltage by connecting resistors between V
LC2
and V
LCDC
externally.
2.2.21 CAPH and CAPL
These are booster capacitor connection pins for LCD drive voltage. Connect capacitors (recommended value:
0.47
μ
F) between CAPH and CAPL.
2.2.22 RESET
This is a low-level active system reset input pin.
2.2.23 X1 and X2
Crystal resonator connect pins for main system clock oscillation.
For external clock supply, input the clock signal to X1 and its inverted signal to X2.
2.2.24 XT1 and XT2
Crystal resonator connect pins for subsystem clock oscillation.
For external clock supply, input the clock signal to XT1 and its inverted signal to XT2.
2.2.25 V
DD0
and V
DD1
V
DD0
is a positive power supply port pin.
V
DD1
is a positive power supply pin other than port pin.
2.2.26 V
SS0
and V
SS1
V
SS0
is a ground potential port pin.
V
SS1
is a ground potential pin other than port pin.
2.2.27 V
PP
(flash memory versions only)
High-voltage apply pin for flash memory programming mode setting and program write/verify.
Connect directly to V
SS0
or
V
SS1
in the normal operating mode.