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HT49R30A-1 Datasheet(PDF) 4 Page - Holtek Semiconductor Inc |
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HT49R30A-1 Datasheet(HTML) 4 Page - Holtek Semiconductor Inc |
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4 / 43 page  HT49C30L * The IC substrate should be connected to VSS in the PCB layout artwork. Pad Description Pad Name I/O Options Description PA0/BZ PA1/BZ PA2 PA3/PFD PA4~PA7 I/O Wake-up Pull-high or None CMOS or NMOS PA0~PA7 constitute an 8-bit bidirectional input/output port with Schmitt trig- ger input capability. Each bit on port can be configured as a wake-up input by options. PA0~PA3 can be configured as a CMOS output or NMOS input/out- put with or without pull-high resistor by options. PA4~PA7 are always pull-high NMOS input/output. Of the eight bits, PA0~PA1 can be set as I/O pins or buzzer outputs by options. PA3 can be set as an I/O pin or as a PFD output also by options. PB0/INT0 PB1/INT1 PB2/TMR PB3~PB5 I ¾ PB0~PB5 constitute a 6-bit Schmitt trigger input port. Each bit on port are with pull-high resistor. Of the six bits, PB0 and PB1 can be set as input pins or as external interrupt control pins (INT0) and (INT1) respectively, by software application. PB2 can be set as an input pin or as a timer/event counter input pin TMR also by software application. VSS ¾¾ Negative power supply, ground VLCD I ¾ LCD power supply for HT49R30A-1/HT49C30-1. Voltage pump for HT49C30L. V2 I ¾ Voltage pump for HT49R30A-1/HT49C30-1. LCD power supply for HT49C30L. V1,C1,C2 I ¾ Voltage pump SEG18/COM3 COM2~COM0 O 1/2 or 1/3 or 1/4 Duty SEG18 can be set as a segment or as a common output driver for LCD panel by options. COM2~COM0 are outputs for LCD panel plate. SEG17~SEG0 O ¾ LCD driver outputs for LCD panel segments HT49R30A-1/HT49C30-1/HT49C30L Rev. 1.10 4 September 25, 2002 ( 0 , 0 ) 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 3 7 3 6 3 5 3 4 3 3 3 2 3 1 3 0 2 9 2 8 2 7 2 6 1 4 8 4 7 4 6 4 5 4 4 4 3 4 2 4 1 4 0 3 9 3 8 S E G 0 S E G 1 S E G 2 S E G 3 S E G 4 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 P A 6 P A 7 I N T 0 / P B 0 I N T 1 / P B 1 T M R / P B 2 P B 3 P B 4 P B 5 V S S V L C D 2 3 4 5 6 7 8 9 1 0 1 1 |
Similar Part No. - HT49R30A-1 |
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Similar Description - HT49R30A-1 |
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