
LC74736PT
No.A0569-5/106
Pin Functions
Pin No.
Symbol
Type
Functional description
1
VSS1
Ground
Connect a ground to this pin. (Digital system ground)
2
VDD1
Power supply (+3.3V)
Digital system power supply: +3.3V
3
OSCin
4
OSCout
LC oscillator
Connect to the character output dot clock generator oscillator coil and
capacitor.
5
EXTclk
External clock signal input
Receives an external clock signal.
Capacitor coupling, 50% duty cycle, 0.5Vp-p or higher
6
CTRL1
OSCin oscillator input control
Switches between external clock input mode and LC oscillator mode.
Low: LC oscillator, high: external clock input MORE+
OR control with MORE+ command
7
SCLK
Clock input
Clock input for the serial data input system
MORE+ (This input has hysteresis characteristics.)
8
SIN
Data input
Serial data input
MORE+ (This input has hysteresis characteristics.)
9
CS
Enable input
Enable input for the serial data input system. Serial data input is enabled
when this pin is set low.
MORE+ (This input has hysteresis characteristics.)
10
VSYNC
Vertical sync signal input
MORE+ (This input has hysteresis characteristics.)
11
HSYNC
Horizontal sync signal input
MORE+ (This input has hysteresis characteristics.)
12
TEST1
Test mode control 1
Low: normal operation, high: test mode MORE+
13
TEST2
Test mode control 2
Low: normal operation, high: test mode (scan mode) MORE+
14
RST
Reset input
System reset input
MORE+ (This input has hysteresis characteristics.)
15
CLKOUT
Clock output
16
VSS1
Ground
Connect a ground to this pin. (Digital system ground)
17
NC
18
NC
19
NC
20
NC
21
NC
22
VSS4
Ground
Connect a ground tro this pin. (PLL system power supply)
23
PD0
PLL charge pump output
PLL VCO control voltage input
Charge pump output
Connect a LPF (lug lead filter) to this pin.
Voltage input for internal VCO control
24
VCOR
VCO variable range adjustment
Used to adjust variable voltage range of internal VCO.
Connect a resistor to this pin.
25
VDD4
Power supply (+3.3V)
PLL system power supply: +3.3V
26
BFin
Amplifier input
Oscillation input for external VCO
27
BFout
Amplifier output
Oscillation output for external VCO
28
RD3
Rout output: bit 3
29
RD2
Rout output: bit 2
30
RD1
Rout output: bit 1
31
RD0
Rout output: bit 0
Rout output
This is a 4-bit digital output with values from 0000 to 1111.
32
GD3
Gout output: bit 3
33
GD2
Gout output: bit 2
34
GD1
Gout output: bit 1
35
GD0
Gout output: bit 0
Gout output
This is a 4-bit digital output with values from 0000 to 1111.
36
VDD1
Power supply (+3.3V)
Digital system power supply: +3.3V
Continued on next page.