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HT49CV3 Datasheet(PDF) 3 Page - Holtek Semiconductor Inc |
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HT49CV3 Datasheet(HTML) 3 Page - Holtek Semiconductor Inc |
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3 / 44 page  Pin Assignment Note: Each VDD (VSS) pins must be connected to the power (ground) of the system. Pin Description Pin Name I/O Options Description PA0/BZ PA1/BZ PA2 PA3/PFD PA4~PA7 I/O Wake-up Pull-high Buzzer PFD Bidirectional 8-bit input/output port. Each bit can be configured as a wake-up input by configuration option. Software instructions determine if the pin is a CMOS output or Schmitt trigger input with or without pull-high resistor (deter- mined by pull-high option: bit option). Pins PA0, PA1 and PA3 are pin-shared with BZ, BZ and PFD, respectively. PB0~PB3 I/O Pull-high Bidirectional 4-bit input/output port. Software instructions determine if the pin is a CMOS output or Schmitt trigger input with or without pull-high resistor (determined by pull-high option: bit option). PC7/RMT I/O Pull-high Bidirectional 1-bit input/output port. Software instructions determine if the pin is a CMOS output or Schmitt trigger input with or without pull-high resistor (determined by pull-high option: bit option). RMT with wake-up function (both rising and falling edge) and Schmitt trigger input with or without a pull-high re- sistor (determined by pull-high option). Note: The RMT is pin-shared with PC7. When this pin is used as an RMT in- put, the pin should be setup as an input, to prevent the I/O pin influencing the operation of the RMT. PD4/INT0 PD5/INT1 PD6/TMR0 PD7/TMR1 I/O Pull-high Bidirectional 4-bit input/output port. Software instructions determine if the pin is a CMOS output or Schmitt trigger input with or without pull-high resistor (determined by pull-high option: bit option). Pins PD4~PD7 are pin-shared with INT0, INT1, TMR0 & TMR1, respectively (determined by software con- trol). VSS ¾¾ Negative power supply, ground VEE ¾¾ VFD Negative power supply SEG0~SEG10 O ¾ High voltage segment output for VFD panel. SEG11/Grid10~ SEG15/Grid6 O ¾ High voltage output for VFD panel. These pins are selectable for segment or grid output. Grid0~Grid5 O ¾ High voltage grid output for VFD panel. SDI I ¾ Serial interface serial data input HT49RV3/HT49CV3 Rev. 1.30 3 March 20, 2007 1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 3 4 3 5 3 6 3 7 3 8 3 9 4 8 4 9 5 0 5 1 5 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 3 2 3 3 H T 4 9 R V 3 / H T 4 9 C V 3 5 2 Q F P - A 4 0 4 1 4 2 4 3 4 4 4 5 4 6 4 7 P B 1 P B 0 P A 7 P A 6 P A 5 P A 4 P A 3 / P F D P A 2 P A 1 / B Z P A 0 / B Z R E S O S C 1 O S C 2 S E G 5 S E G 6 S E G 7 S E G 8 S E G 9 S E G 1 0 S E G 1 1 / G R I D 1 0 S E G 1 2 / G R I D 9 S E G 1 3 / G R I D 8 S E G 1 4 / G R I D 7 S E G 1 5 / G R I D 6 V E E V D D |
Similar Part No. - HT49CV3 |
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Similar Description - HT49CV3 |
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