UPD16682 查看數據表（PDF） - NEC => Renesas Technology

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UPD16682

1/65 DUTY LCD CONTROLLER/DRIVER WITH ON-CHIP RAM

NEC => Renesas Technology 

µ PD16682

3.2 Logic System Pins (2/2)

Pin Symbol

Pin Name

FR

Frame signal

FRS

M,/S

Static signal

Master/Slave

CL

Display clock input

/DOF

Blink control

HPM

IRS

Power supply circuit

select pin for LCD driver

Select pin for VLC1

regulating resistor

TEST1 to

TEST3

TEST4,TEST5

Test pins

Test pins

Pad No. I/O

Function Description

3

Input This pin is used as an I/O pin for the LCD’s AC conversion

/Output signal.

This pin is used (along with the FRS pin) for the static drive.

2

Output This pin is used as an output pin for the static drive.

This pin is used (along with the FR pin) for the static drive.

75

Input This pin is used to select master or slave operation mode.

Timing signals required for the LCD are output during master

mode and are input during slave mode to ensure synchronization

of the LCD block.

M,/S = H: Master operation mode

M,/S = L: Slave operation mode

Note the settings below, based on the status of the M,/S and

CLS pins.

M,/S CLS Oscillation Power CL

Circuit supply

circuit

FR FRS /DOF

H

H Valid Valid Output Output Output Output

L Invalid Valid Input Output Output Output

L

H Invalid Invalid Input Input Hi-Z Input

L Invalid Invalid Input Input Hi-Z Input

4

Input This pin is used as the display clock I/O pin. Note the settings

/Output below, based on the status of the M,/S and CLS pins.

M,/S CLS CL

H

H Output

L Input

L

H Input

L Input

When using this pin in master or slave mode, connect it to the

corresponding CL pin.

5

Input This pin is used to control blinking in the LCD.

/Output M,/S = H : Output

M,/S = L : Input

When using this pin in master or slave mode, connect it to the

corresponding /DOF pin.

81

Input This pin is used as a power control pin of the power supply circuit

for the LCD driver.

HPM = H : Normal mode

HPM = L : High-power mode

83

Input This pin is used to select the resistor that is used to regulate the

VLC1 voltage.

IRS = H : Select on-chip resistor

IRS = L : Do not select on-chip resistor. The VLC1 voltage is

regulated via the VR pin and an external divided resistor.

Use of the on-chip resistor cannot be selected or deselected via

a hard reset or via a reset command. Instead, use this pin to

select the setting.

69 to 71 Input These are test pins for IC tests. Normally, these pins should be

left open.

72,73 Output These are test pins for IC tests. Normally, these pins should be

left open.

Data Sheet S13368EJ4V0DS

9

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