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HT46C64 Datasheet(PDF) 4 Page - Holtek Semiconductor Inc |
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HT46C64 Datasheet(HTML) 4 Page - Holtek Semiconductor Inc |
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4 / 46 page  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 wake-up in- put by option. Software instructions determine the CMOS output or Schmitt Trigger input with or without pull-high resistor (determined by pull-high op- tions: bit option). The BZ, BZ and PFD are pin-shared with PA0, PA1 and PA3, respectively. PB0/AN0 PB1/AN1 PB2/AN2 PB3/AN3 PB4/AN4 PB5/AN5 PB6/AN6 PB7/AN7 I/O Pull-high Bidirectional 8-bit input/output port. Software instructions determine the CMOS output, Schmitt trigger input with or without pull-high resistor (deter- mined by pull-high option: bit option) or A/D input. Once a PB line is selected as an A/D input (by using software control), the I/O function and pull-high re- sistor are disabled automatically. PD0/PWM0 PD1/PWM1 PD2/PWM2 PD3/PWM3 I/O Pull-high PWM Bidirectional 4-bit input/output port. Software instructions determine the CMOS output, Schmitt trigger input with or without a pull-high resistor (deter- mined by pull-high option: bit option). The PWM0/PWM1/PWM2/PWM3 out- put function are pin-shared with PD0/PD1/PD2/PD3 (dependent on PWM options). PD4/INT0 PD5/INT1 PD6/TMR0 PD7/TMR1 I/O Pull-high Bidirectional 4-bit input/output port. Software instructions determine the CMOS output, Schmitt trigger input with or without a pull-high resistor (deter- mined by pull-high option: bit option). The INT0, INT1, TMR0 and TMR1 are pin-shared with PD4/PD5/PD6/PD7. VSS ¾¾ Negative power supply, ground VLCD I ¾ LCD power supply VMAX I ¾ IC maximum voltage connect to VDD, VLCD or V1 V1, V2, C1, C2 I ¾ Voltage pump COM0~COM2 COM3/SEG32 O 1/3or1/4 Duty SEG32 can be set as a segment or as a common output driver for LCD panel by options. COM0~COM2 are outputs for LCD panel plate. SEG0~SEG31 O Logical Output LCD driver outputs for LCD panel segments. SEG0~SEG23 can be optioned as logical outputs. OSC1 OSC2 I O Crystal or RC OSC1 and OSC2 are connected to an RC network or a crystal (by options) for the internal system clock. In the case of RC operation, OSC2 is the output ter- minal for 1/4 system clock. The system clock may come from the RTC oscilla- tor. If the system clock comes from RTCOSC, these two pins can be floating. OSC3 OSC4 I O RTC or System Clock Real time clock oscillators. OSC3 and OSC4 are connected to a 32768Hz crystal oscillator for timing purposes or to a system clock source (depending on the options). No built-in capacitor VDD ¾¾ Positive power supply RES I ¾ Schmitt trigger reset input, active low 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. HT46R64/HT46C64 Rev. 1.90 4 April 13, 2011 |
Similar Part No. - HT46C64_11 |
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Similar Description - HT46C64_11 |
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