FD2000
Rev1.0
5. PIN DESCRIPTIONS
Handling
when unused
Pin Names
Pin No.
Pin Description
Active
I/O
S1-S58
1-58
Segment driver outputs.
(79,80, The S59/COM10 and S60/COM9 pins can be used as
1-56)
59(57)
60(58)
common driver outputs under the “set display technique”
instruction.
-
O
O
Open
Open
S59/COM10
S60/COM9
COM1-COM8
68-61
(66-59)
Common driver outputs.
-
-
OSCI
76(74) Oscillator connections. An oscillator circuit is formed by
I
GND
connecting an external resistor and capacitor at these pins.
75(73)
OSCO
-
O
Open
CE
78(76) Serial data transfer inputs.
Chip enable
H
I
I
I
These pins are connected to
the microcontroller.
GND
CL
79(77)
Synchronization clock
Transfer data
DI
80(78)
-
RESETB
77(75) Reset signal input.
• When RESETB is low (VSS):
• Display off
S1 to S58 = “L” (VSS).
S59/COM10 and S60/COM9 = “L” (VSS).
COM1 to COM8 = “L” (VSS).
L
I
GND
• Serial data transfer is disabled.
• The OSCI/OSCO pin oscillator is stopped.
• When RESETB is high (VDD):
• Display on after a “display on/off control” (display
on state setting) instruction is executed.
• Serial data transfers are enabled.
• The OSCI/OSCO pin oscillator operates.
VLCD1
VLCD2
VLCD3
VDD
71(69) Used for applying the LCD drive 3/4 bias voltage externally.
72(70) Used for applying the LCD drive 2/4 bias voltage externally.
73(71) Used for applying the LCD drive 1/4 bias voltage externally.
-
-
-
I
I
I
Open
Open
Open
69(67) Logic block power supply connection. Provide a voltage of
between 2.7 and 6.0 V.
-
-
-
VLCD
VSS
70(68) LCD driver block power supply connection. Provide a voltage
of between 4.5 and 10.0 V.
-
-
-
-
-
-
74(72) Power supply connection. Connect to ground.
NOTE: Parentheses indicate pin number for 80-LQFP-1212 package.
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