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CHAPTER 2 PIN FUNCTIONS
User’s Manual U15798EJ2V0UD
2.2.15 SCOM0
This is a common signal output pin (for static display) of the LCD controller/driver.
2.2.16 V
LC0
to V
LC2
These are the 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 the LCD driving voltage corresponding
to each bias to the inside of the V
LC0
to V
LC2
pins.
• V
LC0
: Three times the V
LC2
output voltage
• V
LC1
: Two times the V
LC2
output voltage
• V
LC2
: Reference voltage
2.2.17 CAPH and CAPL
These are booster capacitor connection pins for the LCD drive voltage. These pins are used for connecting
capacitors (recommended value: 0.47
µ
F) between CAPH and CAPL.
2.2.18 RESET
This is a low-level active system reset input pin.
2.2.19 X1 and X2
Crystal resonator connection pins for main system clock oscillation.
For external clock supply, input the clock signal to X1 and its inverted signal to X2.
2.2.20 XT1 and XT2
Crystal resonator connection pins for subsystem clock oscillation.
For external clock supply, input the clock signal to XT1 and its inverted signal to XT2.
2.2.21 V
DD0
and V
DD1
V
DD0
is a positive power supply pin for ports.
V
DD1
is a positive power supply pin for other than ports.
2.2.22 V
SS0
and V
SS1
V
SS0
is a ground potential pin for ports.
V
SS1
is a ground potential pin for other than ports.
2.2.23 V
PP
(flash memory versions only)
High-voltage application pin for flash memory programming mode setting and program write/verify.
Connect this pin in either of the following ways.
•
Connect independently to a 10 k
Ω
pull-down resistor.
•
By using a jumper on the board, connect directly to the dedicated flash programmer in the programming mode
or to V
SS0
in the normal operation mode.
Содержание mPD780344 Series
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