HSDP2110S, HSDP2111S, HSDP2112S, HSDP2113S, HSDP2114S, HSDP2115S

2006-01-23

5

Cascading Displays

The HDSP211XS oscillator is designed to drive up to 16 other HDSP211XSs with input loading of 15 pF each.

The following are the general requirements for cascading 16 displays together:

• Determine the correct address for each display.

• Use CE from an address decoder to select the correct display.

• Select one of the Displays to provide the clock for the other displays. Connect CLKSEL to V

• Tie CLKSEL to ground on other displays.

• Use RTS to synchronize the blinking between the displays.

Cascading Diagram

IDCD5031

RD

WR

FL

CLK CLK

Display

CC

V

D0-D7 A0-A4

CE

Up to 14 more

displays in between

I/O

SEL

CE

Display

D0-D7 A0-A4

Data I/O

Address

Decoder

Address

Address Decode Chip 1 to 14

A6

A7

A9

WR

FL

RST

RST

0

15

RD

RST

RD

WR

FL

CLK

SEL

CLK

I/O

A8