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HT46R46 Datasheet(PDF) 5 Page - Holtek Semiconductor Inc |
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HT46R46 Datasheet(HTML) 5 Page - Holtek Semiconductor Inc |
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5 / 77 page  HT46R49 Pin Name I/O Configuration Option Description PA0~PA2 PA3/PFD PA4/TMR PA5/INT PA6~PA7 I/O Pull-high Wake-up PA3 or PFD Bidirectional 8-bit input/output port. Each individual pin on this port can be config- ured as a wake-up input by a configuration option. Software instructions deter- mine if the pin is a CMOS output or Schmitt Trigger input. Configuration options determine which pins on the port have pull-high resistors. Pins PA3, PA4 and PA5 are pin-shared with PFD, TMR and INT, respectively. PB0/AN0 PB1/AN1 PB2/AN2 PB3/AN3 PB4~PB7 I/O Pull-high Bidirectional 8-bit input/output port. Software instructions determine if the pin is a CMOS output or Schmitt Trigger input. Configuration options determine which pins on the port have pull-high resistors. PB is pin-shared with the A/D input pins. The A/D inputs are selected via software instructions. Once selected as an A/D in- put, the I/O function and pull-high resistor options are disabled automatically. PC0~PC4 I/O Pull-high Bidirectional 5-bit input/output port. Software instructions determine if the pin is a CMOS output or Schmitt Trigger input. Configuration options determine which pins on the port have pull-high resistors. PD0/PWM0 PD1/PWM1 I/O Pull-high I/O or PWM Bidirectional 2-bit input/output port. Software instructions determine if the pin is a CMOS output or Schmitt Trigger input. Configuration option determines if this pin has a pull-high resistor. The PWM output are pin-shared with pins PD0 and PD1 selected via a configuration option. OSC1 OSC2 I O Crystal or RC OSC1, OSC2 are connected to an external RC network or external crystal, deter- mined by configuration option, for the internal system clock. If the RC system clock option is selected, pin OSC2 can be used to measure the system clock at 1/4 frequency. RES I ¾ Schmitt Trigger reset input. Active low. VDD ¾¾ Positive power supply VSS ¾¾ Negative power supply, ground Note: 1. Each pin on PA can be programmed through a configuration option to have a wake-up function. 2. Individual pins can be selected to have a pull-high resistor. 3. Pins PC2~PC4 and pin PD1/PWM1 exist but are not bonded out on the 24-pin package. 4. Unbonded pins should be setup as outputs or as inputs with pull-high resistors to conserve power. 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 IOL Total ..............................................................150mA IOH Total............................................................ -100mA Total Power Dissipation .....................................500mW 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 reliability. HT46R46/C46/R47/C47/R48A/C48A/R49 Rev. 1.30 5 June 5, 2008 |
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