MC141539 View Datasheet(PDF) - Motorola => Freescale

Part Name

Description

Manufacturer

MC141539

LCD Segment / Common Driver with Controller

Motorola => Freescale 

COMMAND TABLE

Bit Pattern

000000X1X0

0001X3X2X1X0

0001X3X2X1X0

0010000X0

0010001X0

0010010X0

0010011X0

0010100X0

0010101X0

0010110X0

0010111X0

0011000X0

0011001X0

0011010X0

0011011X0

0011100X0

0011101X0

010X4X3X2X1X0

01100A1A0X0

Command

Set GDDRAM Page Address

Set Contrast Level

Read Contrast Value

Set Voltage Doubler / Tripler

Set Column Mapping

Set Row Mapping

Reserved

Set Display On/Off

Set Internal DC/DC Converter On/Off

Set Internal Regulator On/Off

Set Internal Voltage Divider On/Off

Set Internal Contrast Control On/Off

Set Clock Frequency

Save/Restore GDDRAM Column

Address

Master Clear GDDRAM

Set Bias Ratio

Reserved.

Set Vertical Scroll Value

Set Annunciator Control Signals

Comment

Set GDDRAM Page Address using X1X0 as address bits.

X1X0=00 : page 1 (POR)

X1X0=01 : page 2

X1X0=10 : page 3

X1X0=11 : page 4

Set one of the 16 available values to the internal contrast register,

using X3X2X1X0 as data bits. The contrast register is reset to 0000

during POR.

With D/C pin input Low, R/W pin input high, and D7 D6 D5 D4 pins

equal to 0001 at the rising edge of CS, the value of the internal

contrast register will be latched out at D3 D2 D1 D0 pins, i.e.

X3X2X1X0, at the rising edge of CS.

X0=0: Select Voltage Tripler (POR)

X0=1: Select Voltage Doubler

X0=0 : Col0 to Seg0 (POR)

X0=1 : Col0 to Seg119

With duty cycle is 1/32

X0=0 : Row0 to Com0 (POR)

X0=1: Row0 to Com31

X0=0: display off (POR)

X0=1: display on

X0=0: Internal DC/DC Converter off (POR)

X0=1: Internal DC/DC Converter on

X0=0: Internal Regulator off (POR)

X0=1: Internal Regulator on

When the application employs external contrast control, the inter-

nal contrast control, temperature compensation and the Regulator

must be enabled.

X0=0: Internal Voltage Divider off (POR)

X0=1: Internal Voltage Divider on

When an external bias network is preferred, the voltage divider

should be disabled.

X0=0: Internal Contrast Control off (POR)

X0=1: Internal Contrast Control on

Internal contrast circuits can be disabled if external contrast cir-

cuits is preferred.

X0=0 : low frequency (38.4kHz) (POR)

X0=1 : high frequency (50kHz)

X0=0 : restore address

X0=1 : save address

Master clear entire GDDRAM

X0=0: set 1/7 bias (POR)

X0=1: set 1/5 bias

X0=0: normal operation (POR)

X0=1: test mode

(Note: Make sure to set X0=0 during application)

Use X4X3X2X1X0 as number of lines to scroll.

Scroll value = 0 upon POR

A1A0=00: select annunciator 1 (POR)

A1A0=01: select annunciator 2

A1A0=10: select annunciator 3

A1A0=11: select annunciator 4

X0=0: turn selected annunciator off (POR)

X0=1: turn selected annunciator on

MC141539

3–138

MOTOROLA

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