s Figure 3 CXA3572R Block Diagram

25

SYNC IN

26

DA OUT

27

REF

12

24

37

38

39

40

41

42

43

44

45

46

47

48

23 22

21

20 19 18

15

14

13

16

17

G OUT

11 G DC DET

10 R OUT

9 R DC DET

8 B OUT

7 B DC DET

6 COM

5 GND2

4 TEST

3 VST

2 VCK

1 EN

29

RPD

30

GND1

31

SEN

32

SCK

33

SDAT

34

VD

35

XCLR

36

POF

28

FILTER

ATT

Picture

Hue

color

ATT

ATT

REF

COM

LPF

trap

OSD

BLIM

S/H

Sub-

contrast

User-

bright

Sub-

bright

PSIG-

bright

Clock

generator

Analog block

3-V system

Analog block

12-V system

Digital block

3-V system

Serial I/F

Timing generator

Phase

comparator

PLL

counter

H. filter

Gamma 1

Gamma 2

Contrast

DA

DL

DL

SYNC SEP

Matrix

Picture

f0

SUB-

CONT R

SUB-

CONT B

VCO

ADJ

fine

VCO

ADJ

coarse

CONTRAST

IR

+3 V

0 V

+3 V

0 V

RP

CK

HD_

CSYNC

BLK

FRP

SH2

XCLP SH1

SH3

SH4 XSTBY1

XSTBY2

USER-

BRIGHT

SYNC SEL

γ1

γ2

R-

BRIGHT

B-

BRIGHT

Mode

+3 V

+12 V

Picture

gain

Hue

COM

FRP

Color

R, G, B

DA

BLIM

If the internal sync separation circuit is not used, either CSYNC

or HD and VD are used as the input sync signal.

If the internal sync separation circuit is used, sync on green

(RGB) or Y (Y/color difference) is used as the input sync signal.

Pin used for power saving mode.

VST, VCK, EN, DWN,

WIDE, HST, HCK, RGT

PSIG, VCOM

LCD panel

ACX306BK

(1.5 type)

ACX312AK

(1.8 type)

R, G, B

(RGB or Y/color difference)

(NTSC/PAL)

CSYNC or

3 V

SDAT, SCK, SEN

POF

CXA3572R

Three-wire serial

communication

(microcomputer

or other device)

*1

*2

s Figure 2 ACX312AK/306BK Drive System Block Diagram (single-chip structure)

Package

Model

CXA3522R

72-pin LQFP

Input method

Y/color difference

or RGB

Display method

NTSC/PAL

Supply voltage

3 V and 12 V

VCO

External

PSIG buffer

External

Not available

Not available

CXA3572R

48-pin LQFP

Y/color difference

or RGB

NTSC/PAL

3 V and 12 V

Internal

Planned to be

provided built in

Available

Available

*1: Input signal level setting in RGB mode

*2: On/off setting for the internal sync separation circuit

s Table 2

Drive System IC Specifica-

tions Comparison

Screen size

Model

Number of active dots

Pixel arrangement

Optical transmittance

Contrast ratio

Supply voltage

Display method

Panel dimensions (W

× H × t (mm))

Power consumption

Number of colors

System IC

ACX306AK

3.8 cm (1.5 type)

118K dots (490

× 240)

RGB delta

6.5

200 : 1

12

NTSC/PAL

38.0

× 32.6 × 2.06

43

Analog full color

CXA3572R

ACX306BK

3.8 cm (1.5 type)

118K dots (490

× 240)

RGB delta

7.5

200 : 1

12

NTSC/PAL

38.0

× 32.6 × 2.06

43

Analog full color

CXA3572R

ACX312AK

4.6 cm (1.8 type)

118K dots (490

× 240)

RGB delta

8.6

200 : 1

12

NTSC/PAL

43.6

× 35.9 × 2.06

43

Analog full color

CXA3572R

(H

× V)

(%)

(V)

(mW)

s Table 1 Digital Still Camera LCD Specifications Comparison

s Figure 1 ACX312AK Block Diagram

Voltage set-up generation circuit

Negative voltage generation circuit

COM

pad

COM

LC

Cs

Level

shifter

Horizontal level shifter and shift register

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24