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PD16681A Arkusz danych(PDF) 8 Page - Renesas Technology Corp |
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PD16681A Arkusz danych(HTML) 8 Page - Renesas Technology Corp |
8 / 58 page Data Sheet S14207EJ3V0DS 6 µµµµPD16681A 3.2 Logic System Pins Pin Symbol Pin Name Pad No. I/O Description WS Select word length 76 Input Use this pin to select the word length. An 8-bit parallel interface is used for high level and a serial interface is used for low level. This setting cannot be changed after the power has been switched on. DACHA Select D/A converter 61 Input Use this pin to select whether or not to use the D/A converter for regulating the LCD driver voltage. Select high level to use the D/A converter or low level to not use it. STB Strobe 77 Input This is used for the device’s select signal and strobe signal for communication. Communication is initialized at the rising edge or falling edge of STB. Command data receive standby status occurs at the falling edge of STB. Communication is enabled when STB is low. Also, enabled status or the shift clock is ignored when STB is high. E/SCK Enable/shift clock 78 Input This is an input enable pin for data when the parallel interface is used. During the read-in operation, data is captured in the interface buffer at the signal’s rising edge. During a read-out operation, data is read-out from the interface buffer at the signal’s falling edge. When using a serial interface, this pin is used for the data shift clock. During the read-in operation, data is captured in the shift register at the signal’s rising edge. During a read-out operation, data is read from the shift register at the signal’s falling edge. D0/DATA Data bus/data 68 I/O This pin is used for data bus bit D0 when using the parallel interface. When using the serial interface, it is an I/O pin (tri-state) for commands and display data. D1-D7 Data bus 69 to 75 I/O These pins are used for data bus bits D1 to D7 when using the parallel interface. It should be fixed high or low when using the serial interface. TESTOUT Test output 80 Output This is a test output pin. Leave this pin open when using the device. /RESET Reset 79 Input This pin is used for internal resets at low-level. AMPCHA Op amp switch for LCD driver’s power supply level 62 Input This pin is used to control the op amp that works with the LCD driver’s power supply level. High-power mode is set when at low level and normal mode is set when at high level. VEXT Reference power supply switch 60 Input This pin is used to select the reference power supply circuit’s supply mode. High level sets external mode and low level sets internal mode. SEGINV Segment direction switch 63 Input This pin is used to control the segment output direction. Low level sets forward direction and high level sets reverse direction. COMINV Common scan direction switch 64 Input This pin is used to switch the common scan direction. Low level sets forward direction and high level sets reverse direction. OSCIN Oscillator 65 Input These pins are connected to a 100-k Ω resistance. When using an OSCOUT 66 Output external oscillator, input to OSCIN and leave OSCOUT open. OSCBRI External clock for blink function 67 Input This is an input pin for the 2-Hz external clock. Internally, it is divided by half to generate a 1-Hz signal that is used as the synchronization signal for the blink function. |
Podobny numer części - PD16681A_15 |
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Podobny opis - PD16681A_15 |
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