CXA2108Q 데이터 시트보기 (PDF) - Sony Semiconductor

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CXA2108Q

Constant-Current Driver for Full Color LED Display

Sony Semiconductor 

Pin

No.

Reference

Symbol I/O voltage

level

13 RDY

O CMOS

14 DLDO O CMOS

15 WALL O CMOS

16 XUPR O CMOS

17 TEST_O O CMOS

18 XB

O CMOS

19 XR

O CMOS

20 XG

O CMOS

52 XTAO O CMOS

CXA2108Q

Equivalent circuit

DVCC

13 14 15

16 17 18

19 20 52

DGND

Description

READY signal output.

This indicates the drive current data

RAM access enabled period. Access

is enabled while high level is output.

(See the Timing Charts.)

DLDI signal output.

This outputs the DLDI signal

synchronized with CLK.

Write ALL signal output.

One pulse (= high level signal with a

width of 1 clock) is output

synchronized with the rising edge of

the next CLK after the final address∗1

of the currently selected mode is input.

Note that both the final address must

be input and the XCS and XWR input

levels must be low at the rising edge

of this CLK.

(See the Timing Charts for details.)

∗1 02Fh (Upper/Lower mode)

08Fh (Upper/Lower/RGB mode)

Upper signal output.

This is used as the LED switching signal.

(See the Timing Charts and Application

Circuits for details.)

Test signal output.

This pin is unrelated to the functions of this IC.

Do not connect anything; leave this pin open.

Blue signal output.

This is used as the LED switching signal.

(See the Timing Charts and Application

Circuits for details.)

Red signal output.

This is used as the LED switching signal.

(See the Timing Charts and Application

Circuits for details.)

Green signal output.

This is used as the LED switching signal.

(See the Timing Charts and Application

Circuits for details.)

Thermal Alarm Out signal output.

This pin normally outputs high level, but it

outputs low level when the internal

temperature rises to an abnormally high level.

–6–

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