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HTG2190 Datasheet(PDF) 6 Page - Holtek Semiconductor Inc |
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HTG2190 Datasheet(HTML) 6 Page - Holtek Semiconductor Inc |
6 / 64 page Pad No. Pad Name I/O Mask Option Description 71 RES I ¾ Schmitt trigger reset input. Active low without pull-high resistor. 72 PWM2/AUD O PWM2 CMOS Output or AUD Output Selectable as negative PWM CMOS output or au- dio output by mask option. PWM2 share pad with AUD. 73 PB0/PWM1 I/O or O I/O or PWM1 CMOS Output Selectable as bidirectional input/output or posi- tive PWM CMOS output by mask option. On bidirectional input/output mode, software in- structions determine whether each pad is a CMOS output or Schmitt trigger input with pull-high resistor. PB0 shares pad with PWM1. 74 PB7/TMR0 I/O or I I/O or TMR0 Input Selectable as bidirectional input/output or TMR0 input by mask option. On bidirectional input/output mode, software instructions deter- mine whether it is a CMOS output or Schmitt trigger input with pull-high resistor. On TMR0 input mode, it uses Timer/Event Counter 0. Soft- ware can be optioned with or without pull-high re- sistor. PB7 shares pad with TMR0. 75 PB6/TMR1/RTF I/O or I I/O or TMR1 Input or RTF Input Selectable as bidirectional input/output or TMR1 input or RTF input by mask option. On bidirectional input/output mode, software instructions determine whether it is a CMOS output or Schmitt trigger input with pull-high resistor. On TMR1 and RTF intput mode, it uses Timer/Event Counter 1. Software can be optioned with or with- out pull-high resister and be option the RTF func- tion disable or enable. PB6 and TMR1 share pad with RTF. 76 PB5/SCLK I/O I/O or SCLK Signal Selectable as bidirectional input/output or serial interface clock signal by mask option. On bidirectional input/output mode, software instructions determine whether it is a CMOS output or Schmitt trigger input . Serial I/O interface clock signal. At Master mode: SCLK should be set as serial clock output pin and after 8 clock output from SCLK terminal, clock output is automatically suspended and SCLK terminal is fixed at a high level. At Slave mode: SCLK should be set as serial clock input pin and after 8 clock input from SCLK terminal, subsequent clock input are masked. PB5 shares pad with SLCK HTG2190 Rev. 1.00 6 June 29, 2001 |
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