mitsumi lcd interface mm1323 lcd interface monolithic ic mm1323 outline this ic was developed for interface with digital video equipment having an lcd monitor. it can be used as interface for cpu, dsp and lcd drivers that output rgb signals after output polarity inversion and correction processing. it has a built-in post filter (5mhz lpf), 16.5db amp and 20db common amp. features 1. built-in post filter 5mhz lpf 2. built-in amp g v =16.5db 3. adjustable white balance 4. built-in common amp g vcom =20db package ssop-24 (0.8mm pitch) tsop-24 (0.5mm pitch) circuit connection diagram applications 1. navigation systems 2. digital cameras 3. pachinko games (with color tft) 4. videophones, conferencing systems 5. other game equipment rgb signal after polarity inversion and correction processing january 11, 1996
mitsumi lcd interface mm1323 block diagram
mitsumi lcd interface mm1323 pin description pin no. pin name function internal equivalent circuit diagram 2 v cc 1 1 v cc 2 4 rw/b ct1 white balance control 5 bw/b ct1 6 r in rgb input 7 b in 8 b in 9 nc 3 frpv in 10 dc cont in dc control input 11 common in common input
mitsumi lcd interface mm1323 pin no. pin name function internal equivalent circuit diagram 12 v ee 14 vee 16 v cc 2 18 gnd 19 21 dc detect output detection 23 20 b out 22 g out rgb output 24 r out 13 dc out dc output 15 common out 17 dc detect output detection
mitsumi lcd interface mm1323 item symbol measurement conditions min. typ. max. units v cc 1 4.8 4.9 5.0 v operating power supply voltage v cc 2 6.0 6.5 7.0 v v ee - 7.0 - 6.5 - 6.0 v i cc 1 no load 11.5 15.0 ma consumption current i cc 2 no load 8.5 11.0 ma i ee no load 7.0 9.0 ma rgb r 16.0 16.5 17.0 voltage gain g v g 16.0 16.5 17.0 db b 16.0 16.5 17.0 voltage gain difference r - g - 0.5 0.0 0.5 between channels g vch r - b - 0.5 0.0 0.5 db g - b - 0.5 0.0 0.5 output dynamic range v odr v p - p r 2.3 2.5 2.7 output center voltage v c g 2.3 2.5 2.7 v b 2.3 2.5 2.7 r - 0.2 0 0.2 load fluctuation v ol g - 0.2 0 0.2 v b - 0.2 0 0.2 frequency characteristic f c w/b r 1.5 v p - p common-mode v w/bo 1 output amplitude b 1.5 r 1.5 v p - p negative-phase v w/bo 2 output amplitude b 1.5 frpv input v t 1.0 1.7 2.4 v threshold voltage common- r 2.3 2.5 2.7 mode b 2.3 2.5 2.7 output center voltage v c v negative- r 2.3 2.5 2.7 phase b 2.3 2.5 2.7 common common voltage gain g vcom 19.5 20.0 20.5 db common output v co - 0.2 0 0.2 v center voltage common load fluctuation v olc - 0.5 0 0.5 v center dc adjustment output voltage l v ol sw5=b, v3=0v, measure tp10 dc voltage. - 1.3 - 1.0 - 0.7 v output voltage h v oh sw5=b, v3=3v, measure tp10 dc voltage. 3.7 4.0 4.3 v sw1, sw2, sw3=b v1, v2=1.5v tp5, tp6, tp7=0.6v p - p , 100khz sine wave measure sine wave ratio between input signal and tp12, 13 and 14 measure voltage gain difference between each rgb channel. sw1, sw2, sw3=b v1, v2=1.5v tp5, tp6, tp7=0.6v p - p 100khz sine wave vary input signal amplitude and measure tp12, 13 and 14 amplitude at the point where tp12, 13 and 14 signals start to saturate. input a 0.6v p - p , 7.86khz rectangular wave to tp5, 6 and 7, and measure tp12, 13 and 14 center voltage. measure tp12, 13 and 14 dc voltage fluctuation when tp12, 13 and 14 load current is varied from 0 ?ma. sw1, sw2, sw3=b v1, v2=1.5v tp5, tp6, tp7=0.6v p - p sweep signal for 100khz, measure frequency when attenuated - 3db relative to tp12, 13 and 14 signals. tp1=5.0v p - p 7.86khz rectangular wave confirm that tp12 and 14 signals are in phase with tp1, then measure amplitude. tp1=5.0v p - p 7.86khz rectangular wave confirm that tp12 and 14 signals are reverse phase from tp1, then measure amplitude. measure tp18 voltage, then impress that voltage on tp18. given v1=0v, add dc voltage to tp1. raise gradually from 0v and measure tp1 voltage when tp14 voltage goes over 2.5v. tp1=5.0v p - p 7.86khz rectangular wave adjust v1 and v2 within 0~1.5v (in phase) and set tp12 and 14 amplitude at 1.5v. measure tp12 and tp14 center voltage. measure in the same way for v1 and v2 adjusted within 1.5~3.0v (reverse phase). sw4=b tp9=1.0v p - p 100khz sine wave measure ratio of input signal and tp11 sine wave. sw4=b tp9=1.0v p - p 7.86khz rectangular wave measure tp11 center voltage. measure tp11 dc voltage fluctuation when tp11 load current is varied from 0 ?00ma. electrical characteristics (except where noted otherwise, ta=25 c, v cc 1=4.9v, v cc 2=6.5v, v ee = - 6.5v all sw ; a) r 4.25 g 4.25 b 4.25 r 4.0 5.0 g 4.0 5.0 b 4.0 5.0
mitsumi lcd interface mm1323 measuring circuit absolute maximum ratings (ta=25 c) item symbol ratings units storage temperature t stg - 40~+125 c operating temperature t opr - 20~+75 c power supply voltage v cc - gnd 8 v v ee - gnd - 8v allowable loss pd 650 mw
|
