PCF8578HT View Datasheet(PDF) - NXP Semiconductors.

Part Name

Description

Manufacturer

PCF8578HT

LCD row/column driver for dot matrix graphic displays

NXP Semiconductors. 

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VDD

C

R

C

R

C

R

C

R

C

R

VLCD

VDD

SCL

SDA

VDD

VSS

SA0 SDA SCL CLK SYNC VSS

A3

V3

A2

#k

V4

A1

PCF8579

VLCD

A0

VDD

VDD

VDD

VSS

SA0 SDA SCL CLK SYNC VSS

A3

V3

A2

#2

V4

A1

PCF8579

VLCD

A0

VDD

VDD

VDD

VSS

SA0 SDA SCL CLK SYNC VSS

A3

V3

A2

#1

V4

A1

PCF8579

VLCD

A0

VDD

VDD

subaddress k 1

40

columns

subaddress 1

40

columns

subaddress 0

40

columns

16

VDD

rows

V2

16

V3

rows

V4 PCF8578

(ROW MODE)

8

unused columns

V5

VLCD

SA0

VSS/VDD

VDD

VSS

OSC

VSS SDA SCL CLK SYNC

Rext(OSC)

VSS

LCD DISPLAY

40

columns

subaddress 0

VDD

A0

VDD

VLCD

#1

A1

V3

PCF8579

A2

V4

A3

VSS SYNC CLK SCL SDA SA0

VSS

VSS

1:16 multiplex rate

16 × 40 × k dots (k ≤ 16)

(10240 dots max.)

1:16 multiplex rate

16 × 40 × k dots (k ≤ 16)

(10240 dots max.)

40

columns

subaddress 1

VDD

A0

VDD

VLCD

#2

A1

V3

PCF8579

A2

V4

A3

VSS SYNC CLK SCL SDA SA0

VSS

VSS

40

columns

subaddress k 1

VDD

A0

VLCD

#k

A1

V3

PCF8579

A2

V4

A3

VSS SYNC CLK SCL SDA SA0

VSS

VSS

msa847

Fig 26. Split screen application with 1:16 multiplex rate for improved contrast

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