ST7920 - Topwaydisplay.com

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ST79208 bit interface timing diagram• MPU write data to ST7920RSVIH1VIL1TASTAHR/WTPWTAHEDB0-DB7TRTDSWValid dataTHTC• MPU read data from ST7920RSR/WEDB0-DB7VIH1VIL1TRTASTDDRTPWValid dataTAHTAHTHTCV3.1 36/42 2003/04/11
ST7920AC Characteristics (T A = 25 o C, V DD = 4.5V) Serial Mode InterfaceSymbol Characteristics Test Condition Min. Typ. Max. UnitInternal Clock Operationf OSC OSC Frequency R = 33KΩ 470 530 590 KHzExternal Clock Operationf EX External Frequency - 470 530 590 KHzDuty Cycle - 45 50 55 %T R ,T F Rise/Fall Time - - - 0.2 µsTSCYC Serial clock cycle Pin E 400 - - nsTSHW SCLK high pulse width Pin E 200 - - nsTSLW SCLK low pulse width Pin E 200 - - nsTSDS SID data setup time Pins RW 40 - - nsTSDH SID data hold time Pins RW 40 - - nsTCSS CS setup time Pins RS 60 - - nsTCSH CS hold time Pins RS 60 - - nsAC Characteristics (T A = 25 o C, V DD = 2.7V) Serial Mode InterfaceSymbol Characteristics Test Condition Min. Typ. Max. UnitInternal Clock Operationf OSC OSC Frequency R = 18KΩ 470 530 590 KHzExternal Clock Operationf EX External Frequency - 470 530 590 KHzDuty Cycle - 45 50 55 %T R ,T F Rise/Fall Time - - - 0.2 µsTSCYC Serial clock cycle Pin E 600 - - nsTSHW SCLK high pulse width Pin E 300 - - nsTSLW SCLK low pulse width Pin E 300 - - nsTSDS SID data setup time Pins RW 40 - - nsTSDH SID data hold time Pins RW 40 - - nsTCSS CS setup time Pins RS 60 - - nsTCSH CS hold time Pins RS 60 - - nsV3.1 37/42 2003/04/11
Page 2 and 3: ST7920ST7920 Specification Revision
Page 5 and 6: ST7920Pin coordinatesNo. Name X Y1
Page 7 and 8: ST7920Pin DescriptionName No. I/O C
Page 9 and 10: ST7920Voltage doublerVssreference v
Page 11 and 12: ST7920Display data RAM(DDRAM)There
Page 13 and 14: ST7920DDRAM data(char. code)B B BB1
Page 15 and 16: ST7920GDRAM Vertical address(Y)0123
Page 17 and 18: ST7920Instruction set 2: (RE=1: ext
Page 19 and 20: ST7920Description of basic instruct
Page 21 and 22: ST7920• FUNCTION SETRS RW DB7 DB6
Page 23 and 24: ST7920Description of extended instr
Page 26 and 27: ST7920Serial interface :ST7920 is i
Page 28 and 29: ST79208 bit interface:POWER ONWait
Page 30 and 31: ST7920Built in voltage boosterVoutV
Page 32 and 33: ST7920Absolute Maximum RatingsChara
Page 34 and 35: ST7920AC Characteristics (T A = 25
Page 38 and 39: ST7920Serial interface timing diagr
Page 40 and 41: ST7920V3.1 40/42 2003/04/11Applicat
Page 42: ST7920Application circuit 3:LCD: 2L

ST7920 - Topwaydisplay.com

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