Online UPS Designer Reference Manual, Rev. 03-6 Freescale SemiconductorPreliminaryFigure 3-5. RS-232 Serial Communications3.5 LCD InterfaceThe Control Board contains an LCD as the primary user interface feedback. The LCD contains abuilt-in internal driver. The display is controlled by some of the 56F8346’s GPIO pins.Figure 3-5 shows this hardware interface. As seen in Figure 3-6, the LCD interface (J12) uses a4-bit data bus (D4-D7).Figure 3-6. LCD InterfaceR1082KU206N136SNC11 VCC 8-VF3+VF2VD 6VE 7GND 5NC24U216N136SNC1 1VCC8-VF 3+VF 2VD6VE7GND5 NC2 4C550.1uFC560.1uFQ1BSV52LT1 3125VextR98390R463.9KR90390R473.9KR1072KQ3BSV52LT1312+5.0VRS-232 SHUTDOWN JUMPER5Vext+5.0VJG111324C81.0uFC91.0uFC101.0uFU4MAX3245EEAIV+ 27C2+1VCC 26C2-2FORCEON23C1+28T1IN14T2IN13T3IN12R1OUT19R2OUT18R3OUT17R4OUT16R5OUT15 R5IN 8R4IN 7R3IN 6R2IN 5R1IN 4T3OUT 11T2OUT 10T1OUT 9FORCEOFF22C1-24 V- 3GND 25R2OUTB20INVALID 21R34 1KR35 1KN/C1 - 2RS-232 DISABLERS-232 ENABLECTSCONNECTORRXDDTRDSRRTSTXDDCDT31T6 15VextSCI #0C111.0uFRS-2325VextR401KT41T51T7 1T8 1T9 1T10 1/ENJG712R5INR4INR45 1KR44 1KR2INR3INR3INR2INR4INR5INR43 1KR42 1KT2INT3INR41 1K/ENP2594837261T2INT3INRXD0TXD05Vext+5.0VR3310KJ12LCD_DISPLAYGND1VCC2VO3RS4/RW5E6D07D18D29D310D411D512D613D714AABBCCDDR11020K132PC3PC2PC6PC7PC9PC8
