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Fig 22. Split screen application with 1:16 multiplex rate for improved contrast

OSC

SCL SDA SA0

CLK

SYNC

A0

A1

A2

A3

PCF8579

#1

40

columns

subaddress 0

SCL

SDA

SA0

CLK SYNC

PCF8578

(ROW MODE)

unused columns

16

8

rows

SCL

SDA

1:16 multiplex rate

16

× 40 × k dots (k ≤ 16)

(10240 dots max.)

16

rows

R

R

R

R

R

C

C

C

C

C

SCL

SDA

SA0

CLK SYNC

A0

A1

A2

A3

PCF8579

#1

40

columns

subaddress 0

SCL

SDA

SA0

CLK SYNC

A0

A1

A2

A3

PCF8579

40

columns

subaddress k 1

#k

SCL SDA SA0

CLK

SYNC

A0

A1

A2

A3

PCF8579

#2

40

columns

subaddress 1

SCL SDA SA0

CLK

SYNC

A0

A1

A2

A3

PCF8579

#k

40

columns

subaddress k 1

1:16 multiplex rate

16

× 40 × k dots (k ≤ 16)

(10240 dots max.)

LCD DISPLAY

SCL

SDA

SA0

CLK SYNC

A0

A1

A2

A3

PCF8579

#2

40

columns

subaddress 1

msa847

Rext(OSC)