Sitronix ST7580A 160 x 84 Dot Matrix LCD Controller/Driver Ver 1.7 1/62 2011/05/06 1. INTRODUCTION ST7580A is a single-chip LSI for graphic dot-matrix LCD systems. It incorporates LCD controller, LCD drivers and LCD power system. It can be connected directly to a microprocessor which supports 8-bit parallel interface or 4-line serial interface (SPI-4). Display data is stored in the internal Display Data RAM (DDRAM, 160 x84 bits). The display data bits in DDRAM are directly related to the pixels on LCD panel. With built-in oscillation circuit and low power consumption power circuits, ST7580A can drive an LCD panel without external clock or power, so that it is possible to make a display system with the fewest components and minimal power consumption. 2. FEATURES Single-Chip LCD Controller when the external oscillator is used, connect CLS to VSS1 and input external clock to CL pin. This oscillator signal is used by the voltage booster and display timing generation circuit. Power System The built-in power circuits generate the voltage levels which are necessary to drive the liquid crystal. It consumes low power with the fewest external components. The built-in power system has negative-power generator, voltage booster, voltage regulator and voltage follower circuits. Before turning power OFF, a Power OFF procedure is needed (please refer to the OPERATION FLOW section). External Components of Power Circuit The external power components are shown below. The optimized value depends on the panel size and loading. Fig. 8. LCD Power Circuit Regulator Circuit The built-in high accuracy regulator is used for Vop voltage adjustment. The detailed information for Vop setting is in “Set Vop” (Page 31) of Section 9. INSTRUCTION DESCRIPTION. With the help of the built-in temperature sensor, its temperature compensation can be customized. The output voltage can also be changed by instructions such as “Set Vop”, “Set Vop TC-Curve”, “Set TC Flag” and “Set FR TC Hysteresis” Power Application Application Condition Power Control Setting Note Use internal power circuits (VN,VB,VR,VF)=(1,1,1,1) NVDD, V3, V1, MV1 MX=0, normal 0 0 0 1 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0 OSC ON 0 0 1 0 1 0 1 0 1 1 Set internal oscillator ON Display ON/OFF 0 0 1 0 1 0 0 0 1 D D=1, display ON D=0, display OFF All Pixels ON 0 0 1 0 1 0 0 1 0 AP AP=1, set all pixels ON AP=0, normal display Inverse Display 0 0 1 0 1 0 0 1 1 INV INV =1, inverse display INV =0, normal display 1 1 0 1 1 1 0 0 DP27 DP26 DP25 DP24 DP23 DP22 DP21 DP20 DP17 DP16 DP15 DP14 DP13 DP12 DP11 DP10 DP07 DP06 DP05 DP04 DP03 DP02 DP01 DP00 Set Display Part 0 0 1 1 0 0 MY 0 0 0 Set Display Part and COM output direction. Please refer to instruction description for detailed information. Full (84-Row): MY=0: DP2,DP1,DP0=54h, D3h, 00h MY=1: DP2,DP1,DP0=54h, D3h, 30h Power Control 0 0 1 0 0 1 VN VB VR VF Set built-in power blocks ON/OFF Discharge ON/OFF 0 0 0 0 1 1 0 1 1 Disv Discharge Power supply circuit Set Booster 0 0 0 1 1 0 0 1 BL1 BL0 Set booster level 0 0 1 0 0 0 0 0 0 1 Set Vop 0 0 V7 V6 V5 V4 V3 V2 V1 V0 Double command! Set V3/MV3 level Bias Select 0 0 0 1 0 1 0 B2 B1 B0 Select LCD bias Standby ON/OFF 0 0 0 1 0 1 1 0 0 PSD Enable standby mode 0 0 1 1 1 0 0 0 0 1 0 0 1 1 0 1 0 0 0 0 SRESET 0 0 0 0 0 0 0 0 0 0 Software reset NOP 0 0 1 1 1 0 0 0 1 1 No operation 0 0 0 0 1 1 0 0 0 0 Set Frame Rate 1 0 0 FB3:0 FA3:0 Frame frequency in Temp range A TE=1, enter test mode. ST7580A Ver 1.7 24/62 2011/05/06 Extended Instruction 1 (TE=1 TC=0: OFF 0 0 1 1 0 0 0 0 Set TC Curve 01 0 0 MT13:0 MT03:0 Set TC curves for: T0 (-40 -32 C) & T1 (-32 -24 C) 0 0 1 1 0 0 0 1 Set TC Curve 23 0 0 MT33:0 MT23:0 Set TC curves for: T2 (-24 -16 C) & T3 (-16 - 8 C) 0 0 1 1 0 0 1 0 Set TC Curve 45 0 0 MT53:0 MT43:0 Set TC curves for: T4 (-8 0 C) & T5 (0 8 C) 0 0 1 1 0 0 1 1 Set TC Curve 67 0 0 MT73:0 MT63:0 Set TC curves for: T6 (8 16 C) & T7 (16 24 C) 0 0 1 1 0 1 0 0 Set TC Curve 89 0 0 MT93:0 MT83:0 Set TC curves for: T8 (24 32 C) & T9 (32 40 C) 0 0 1 1 0 1 0 1 Set TC Curve AB 0 0 MTB3:0 MTA3:0 Set TC curves for: TA (40 48 C) & TB (48 56 C) 0 0 1 1 0 1 1 0 Set TC Curve CD 0 0 MTD3:0 MTC3:0 Set TC curves for: TC (56 64 C) & TD (64 72 C) 0 0 1 1 0 1 1 1 Set TC Curve EF 0 0 MTF3:0 MTE3:0 Set TC curves for: TE (72 80 C) & TF (80 88 C) 0 0 1 1 1 1 1 0 FMT7 FMT6 FMT5 FMT4 FMT3 FMT2 FMT1 FMT0 Set TC flag for MT70 0 0 1 1 1 1 1 1 Set TC Flag 0 0 FMTF FMTE FMTD FMTC FMTB FMTA FMT9 FMT8 Set TC flag for MTF8 0 0 1 0 1 0 0 0 0 0 TMPARNG 0 0 0 TA6 TA5 TA4 TA3 TA2 TA1 TA0 Temp range A 0 0 1 0 1 0 0 0 0 1 TMPBRNG 0 0 0 TB6 TB5 TB4 TB3 TB2 TB1 TB0 Temp range B 0 0 1 0 1 0 0 0 1 0 TMPCRNG 0 0 0 TC6 TC5 TC4 TC3 TC2 TC1 TC0 Temp range C 1 1 0 0 1 1 0 0 Set FR TC Hysteresis 0 0 0 0 0 0 THF3 THF2 THF1 THF0 Set TC hysteresis for frame