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HT48C30-1 Datasheet(PDF) 3 Page - Holtek Semiconductor Inc |
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HT48C30-1 Datasheet(HTML) 3 Page - Holtek Semiconductor Inc |
3 / 39 page Pin Description Pin Name I/O Options Description PA0~PA7 I/O Pull-high* Wake-up CMOS/Schmitt trigger Input Bidirectional 8-bit input/output port. Each bit can be configured as a wake-up input by options. Software instructions determine the CMOS output or Schmitt trigger or CMOS input (depends on an options) with pull-high resistor (determined by 1-bit pull-high options). PB0/BZ PB1/BZ PB2~PB7 I/O Pull-high* PB0 or BZ PB1 or BZ Bidirectional 8-bit input/output port. Software instructions determine the CMOS output or Schmitt trigger input with pull-high resistor (deter- mined by pull-high options). The PB0 and PB1 are pin-shared with the BZ and BZ, respectively. Once the PB0 or PB1 is selected as buzzer driving outputs, the output signals come from an internal PFD generator (shared with timer/event counter). VSS ¾¾ Negative power supply, ground PG0/INT I/O Pull-high* Bidirectional I/O lines. Software instructions determine the CMOS out- put or Schmitt trigger input with pull-high resistor (determined by 1-bit pull-high options). This external interrupt input is pin-shared with PG0. The external interrupt input is activated on a high to low transition. PC0/TMR PC1~PC5 I/O Pull-high* Bidirectional I/O lines. Software instructions determine the CMOS out- put or Schmitt trigger input with pull-high resistor (determined by 1-bit pull-high options). The timer input are pin-shared with PC0. RES I ¾ Schmitt trigger reset input. Active low VDD ¾¾ Positive power supply OSC1/PG1 OSC2/PG2 I O Pull-high* Crystal or RC or Int. RC+I/O or Int. RC+RTC OSC1, OSC2 are connected to an RC network or Crystal (determined by options) for the internal system clock. In the case of RC operation, OSC2 is the output terminal for 1/4 system clock. These two pins can also be optioned as an RTC oscillator (32768Hz) or I/O lines. In these two cases, the system clock comes from an internal RC oscillator whose frequency has 4 options (3.2MHz, 1.6MHz, 800kHz, 400kHz). If the I/O option is selected, the pull-high options can also be enabled or disabled. Otherwise the PG1 and PG2 are used as internal registers (pull-high resistors are always disabled). Note: ²*² The pull-high resistors of each I/O port (PA, PB, PC, PG) are controlled by 1-bit option. Or Schmitt trigger option of port A is controlled by 1-bit option. Absolute Maximum Ratings Supply Voltage ...........................VSS -0.3V to VSS+6.0V Storage Temperature ............................ -50°Cto125°C Input Voltage..............................VSS -0.3V to VDD+0.3V Operating Temperature........................... -40°Cto85°C Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum Ratings² may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliabil- ity. HT48R30A-1/HT48C30-1 Rev. 2.00 3 April 24, 2009 |
Similar Part No. - HT48C30-1_09 |
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Similar Description - HT48C30-1_09 |
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