View MM1288CQ_171836.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

MITSUMI
TFT Liquid Crystal Interface MM1288CQ
TFT Liquid Crystal Interface
Monolithic IC MM1288CQ
Outline
This IC was developed as an interface IC for video equipment having a small monitor. This IC performs correction and polarity identification to convert RGB signals into TFT liquid crystal RGB signals. A common inversion circuit and sync separation circuit are built-in.
Features
1. 2. 3. 4. 5. 6. 7. Power supply voltage +13V, 0V or +5V, -8V Built-in polarity ID circuit Built-in correction circuit Common inversion circuit built-in 2 input switch built-in Built-in contrast adjustment circuit Built-in sync separation circuit
Package
QFP-48A
Applications
1. 2. 3. 4. 5. Navigation systems Pachinko games (models with color TFT) Videophones, conferencing systems Game equipment Others
MITSUMI
TFT Liquid Crystal Interface MM1288CQ
Block Diagram
Pin Description
Pin no. Pin name 1, 6 11, 12 13, 23 24, 25 36, 37 38, 48 2, 3 4, 7 8, 9 Function Internal equivalent Pin no. Pin name circuit diagram 14 NC SYNC OUT Function Sync output Internal equivalent circuit diagram
15 RGB IN
TIME CONSTANT
Sync integration
RGB input
16
SYNC IN
Sync input
5 10
GND SYNC SEP IN
GND pin Sync separation input 17, 18 44 CLAMP (RGB) Clamp
MITSUMI
TFT Liquid Crystal Interface MM1288CQ
Pin no. Pin name SUB 19, 45 CONTRAST
Function Subcontrast
Internal equivalent Pin no. Pin name circuit diagram 32 OUT DC V DETECT
Function G output detection
Internal equivalent circuit diagram
43
CONTRAST
Contrast
20 21, 42
VCC1 SUB BRIGHT
Positive polarity power supply pin 1 Sub bright
34
GAMMA1
Gamma correction 1
22
Common COMMON operating DC VOLT point adjustment
35
CENTER DC
Adjust center voltage
26
COMMON INV
Common inversion
39
GAMMA2
Gamma correction 2
27
COMMON OUT
Common output
40 INV Inversion
28
COMMON SWING
Common amplitude adjustment
41 46
VCC2 BRIGHT
Positive polarity power supply pin 2 Bright
29, 31 RGB OUT 33
RGB output
47
SW
Switch
30
VEE
Negative polarity pin
MITSUMI
TFT Liquid Crystal Interface MM1288CQ
Note : GAMMA1, GAMMA2 (Pins 34, 39) DC voltage applied to these pins sets correction DC voltage gain change point.
Output
1
2 Input
correction Output is given characteristics as shown at left according to LCD panel characteristics. Pins 34 and 39 adjust the slope change position.
INV (40PIN) The primary color output (pins 29, 31, 33) and COMMON output (pin 27) are inverted according to the inversion pulse input to this pin. When COMMON INV (pin 26) has Vcc2 potential, the relationships between the input, output and inversion pulse are as shown in the figure below.
RGB input
Inversion pulse
Primary color output
COMMON output
Absolute Maximum Ratings
Item Storage temperature Operating temperature
(Ta=25C) Symbol TSTG TOPR VCC1-GND VCC2-VEE GND-VEE Pd 1 Pd 2 Ratings -40~+125 -20~+85 6 15 10 500 1000* Units C C V V V mW mW
Power supply voltage
Allowable loss 1 Allowable loss 2
*47mm
75mm
0.8mm
printed circuit board (glass epoxy) board mounted.
MITSUMI
TFT Liquid Crystal Interface MM1288CQ
Electrical Characteristics
Item VCC1 pin operating power supply voltage range Operating power supply voltage range when on power supply +2 Operating power supply voltage range when on power supply Consumption current 1 Consumption current 2 Voltage gain Voltage gain difference between inputs Reversed/non-reversed voltage gain difference RGB voltage gain differences Maximum voltage gain
(Except where noted otherwise, Ta=25C, All SW : A, VCC1=5.0V, VCC2=13V, GND=0V, VEE=0V, T16; SG1, T40; SG2, V46=3.5V) Measurement conditions Min. Typ. Max. Units 4.5 10.0 5.0 5.5 14.0 5.5 -6.5 15.0 22.0 V V V V V mA mA dB
Symbol VCC1 VCC2+2 VEE+2 VCC2 VEE ICC1 ICC2 GV
GVSW
GVINV
GVRGB
GV max.
Minimum voltage gain
GV min.
Subcontrast change
GVSUB
Input dynamic range
VINDR
Switch crosstalk
CTSW
VCC1=5V VCC2=13V Measure ratio of SG3 and T29, 31, 33 sine waves. Measure T29, 31, 33 sine wave ratio when SW47 : SW2~4, 7~9 ; B and V47=0V and 5V. B Measure T29, 31, 33 sine T2~4, 7~9 ; wave ratio when T40=0V SG3 and 5V. Adjust V46 Measure T29, 31, 33 sine so that T29, wave ratio. 31 and 33 SW43 ; B, V43=4.5V amplitude is Measure SG3 and T29, 8V. 31, 33 sine wave ratio. SW43 ; B, V43=4.5V Measure SG3 and T29, 31, 33 sine wave ratio. SW2~4, 19, 45 ; B, T2~4 ; SG3 Adjust V46 so that T29, 31 and 33 amplitude is 8V. Measure ratio between T29, 31 and T33 sine waves when V19 and 45 are 0.5~4.5V. SW2~4, 43 ; B, T2~4 ; SG3, V43=1.5V Adjust V46 so that T29, 31 and 33 amplitude is 9V. Vary SG3 amplitude and measure SG3 amplitude at the point where T29, 31 and 33 signals start to be saturated. SW2~4, 43, 47 ; B, T2~4 ; SG4, V47=5V Adjust V46 so that T29, 31 and 33 amplitude is 8V, and adjust V43 so that T29, 31 and 33 sine wave amplitude is 5VP-P. Vary SW47 in this state and measure 1MHz spectrum change. SW7~9, 43, 47 ; B, T7~9 ; SG4, V47=5V Adjust V46 so that T29, 31 and 33 amplitude is 8V, and adjust V43 so that T29, 31 and 33 sine wave amplitude is 5VP-P. Vary SW47 in this state and measure 1MHz spectrum change.
13.0 GND 4.5 5.0 -8.5 -8.0 8.5 17.0 17
0.7
dB
0.7
dB
0.7
dB
18
dB
13
dB
1
dB
1.5
1.9
VP-P
-50
-44
dB
-50
-44
dB
MITSUMI
TFT Liquid Crystal Interface MM1288CQ
Item
Symbol
Crosstalk between RGB
CTRGB
Output dynamic range (B-B)
VDR B-B
Output dynamic range (B-W)
VDR B-W
Output center voltage
VC
Output center voltage change
VC
Bright change Amplitude difference between bright RGB signals
VBRIT VBRIT RGB
Sub-bright change
VSUBB
Frequency characteristic
fmax.
COMMON output amplitude COMMON output maximum amplitude COMMON output minimum amplitude COMMON output center maximum voltage COMMON output center minimum voltage Sync separation input sensitivity current Sync separation output low voltage Sync input threshold voltage Sync input input current Subcontrast input current
VCOM VCOM max. VCOM min. VCO max. VCO min.
IIS VSYNL VTH15 I15 I18, I41
Measurement conditions Min. Typ. SW2 ; B T2 ; SG4 Adjust V46 so that T33 amplitude is 8V, and adjust V43 so that T33 sine wave amplitude is 5VP-P. Then measure the -48 difference between T33 and T29, 31 signals 1MHz spectrum. Measure in the same way for G B,R and B R, G. SW2~4 ; B, T2~4 ; SG4, V46=0.5V 10 11 Measure T29, 31 and 33 signals. SW2~4, 43 ; B, T2~4 ; SG4, V43=4.5V Adjust V46 so that T29, 31 and 33 6.0 7.0 amplitude is 9V and measure T29, 31 and 33 sine wave amplitude. Adjust V46 so that T29, 31 and 33 amplitude is 6.3 6.5 0V and measure T29, 31 and 33 DC voltage. Adjust V46 so that T29, 31 and 33 amplitude is 0V and measure the difference T29, 31 and 3.0 33 DC voltage when V35=5V and 8v Measure the difference between T29, 31 and 33 10.0 13.5 signal clamp levels when V46=0.5V and 4.5V. Adjust V46 so that T31 amplitude is 5.7V -0.5 and measure T29 and 33 amplitude ratio. After adjusting V46 so that T29, 31 and 33 amplitude is 6V, with SW21 and 42 : B, vary V21 and 42 between 8~10V and measure 1 the maximum value of the difference between T31 and T29, 33 amplitudes. SW2~4, 29, 31, 33 ; B, T2~4 ; SG4 Adjust V46 so that T29, 31 and 33 amplitude is 8V, then adjust V43 so that 4.0 5.0 T29, 31 and 33 sine wave amplitude is 5VP-P. Vary sine wave frequency at measure cutoff frequency. Measure T27 amplitude. 6.0 6.5 SW28 ; B, V28=12V Measure T27 amplitude. 8.0 SW28 ; B, V28=0V T27 amplitude. -0.1 0 SW22, 28 ; B, V22=5V, V28=0V 8.5 Measure T27 amplitude. SW22, 28 ; B, V22=0.5V, V28=0V Measure T27 DC voltage Increase current flowing out on T10, and measure outflow current when T14 -50 -35 voltage changes from high to low. Measure T14 voltage when 5V is applied to T10. 0.2 Measure T14 inverted input voltage when 1.4 1.9 T16 voltage is changed from 0 5V. SW16 ; B Apply 0V to T16 and measure I16. -1.5 SW19, 45, 46 ; B Measure I19 and 45 when V19 and 45 are -60 0.5V and 4.5V.
Max. Units
-40
dB
VP-P
VP-P
6.7
V
V
V 0.5 dB
V
MHz
0.1
VP-P VP-P VP-P V
4.5
V
-20 0.4 2.4
A V V A
70
A
MITSUMI
TFT Liquid Crystal Interface MM1288CQ
Item Sub-bright input current COMMON DC VOLT input current
Symbol I20, I38 I21
COMMON INV threshold voltage
VTH24
COMMON INV input current COMMON SWING input current GAMMA1 input voltage GAMMA2 input voltage INV threshold voltage INV input current Contrast input current Bright input current CENTER DC input current
I24 I26 I32 I35 VTH36 I36 I39 I42 I35
SW threshold voltage
VTH47
SW input current
I43
GAMMA1 fluctuation
V34
GAMMA2 fluctuation
V39
Measurement conditions Min. Typ. SW21, 42, 46 ; B -50 Measure I21 and 42 when V21 and 42 are 7.5V and 10.5V. SW22 ; B -100 Measure I22 when V22=0V. SW26 ; B 6.0 6.5 Vary V26 between 0~13V and measure V26 when T27 phase inverts. SW26 ; B -90 Measure I26 when V26=0 and 13V. SW28 ; B -60 Measure I26 when V26=9 and 12V. SW34 ; B Measure I34 when V34=11V. SW39 ; B -6 Measure I39 when V39=1V. Vary T40 voltage from 0 5V and measure 2.5 3.0 the voltage when T27 phase inverts. -2 Measure I40 when V40 is 0V. SW43 ; B -60 Measure I43 when V43 is 0.5V and 4.5V. Measure I46 when V46=1.7V. 105 110 Measure I35 when V35=VCC2 SW2~4, 47 ; B, T2~4 ; SG3 Adjust V46 so that T29, 31 and 33 0.8 1.4 amplitude is 8V. Vary V47 voltage from 0 5V and measure V47 when T29, 31 and 33 sine waves disappear. SW47 ; B Measure I47 when V47=0V. SW2~4, 34, 43 ; B, T2~4 ; SG5 Adjust V43 so that T29, 31 and 33 amplitude is 0.8 1.2 3V. Vary V34 voltage from 3 6V and measure the amount of T29, 31 and 33 voltage change. SW2, 3, 4, 39, 43 ; B, T2~4 ; SG5 Adjust V43 so that T29, 31 and 33 amplitude is 0.8 1.2 3V. Vary V39 voltage from 6.2 8V and measure the amount of T29, 31 and 33 voltage change. SW27, 28 ; B, T40 ; SG6 Adjust V28 so that T27 amplitude is 6V.
Max. Units 40 A A
7.0
V
90 60 6
A A A A
3.5
V A
70 3 165
A A A
2.0
V
4.5
A
2.1
V
2.1
V
H-to-L common transport delay time L-to-H common transport delay time COMMON fall time COMMON rise time Difference in COMMON rise and fall times H-to-L primary color signal transport delay time L-to-H primary color signal transport delay time Primary color signal fall time Primary color signal rise time Difference in primary color signal rise and fall times
tPHL tPLH tTHL tTLH tT tPHL
2 2
2 2 3 3 2 2
S S S S S S S S S S
tT=
tTHL-tTLH
tPLH tTHL tTLH tT
SW29, 31, 33 ; B, T40 ; SG6 Adjust V46 so that T29, 31 and 33 amplitude is 8V.
2 1 1 2 2 1
tT=
tTHL-tTLH
MITSUMI
TFT Liquid Crystal Interface MM1288CQ
Example of Power Supply Use
Left : +2 power supply VCC2 13V VCC1 5V GND VEE 0V -8V 13V VEE 5V VCC2 5V VCC1 GND Impressed power supply 13V Right : power supply
Input Signal Waveforms
63.5US (1H)
SG1 SG2
4.7US 1.5US 10.9US
3V 0V 3V 0V
SG3
100kHz
0.5VP-P
SG4
1MHz
1VP-P
SG5
0.5VP-P
90%
90% 10% tf<50nS
5V
SG6
10% tr<50nS -0V
MITSUMI
TFT Liquid Crystal Interface MM1288CQ
Measuring Circuit
MITSUMI
TFT Liquid Crystal Interface MM1288CQ
Application Circuits
Basic Connection Diagram 1 (VCC1=5V, VCC2=13V)
MITSUMI
TFT Liquid Crystal Interface MM1288CQ
Basic Connection Diagram 2 (VCC=5V, VEE=-8V)

▲Up To Search▲

Price & Availability of MM1288CQ

	To Download MM1288CQ Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .