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HT56RB688 Fiches technique(PDF) 11 Page - Holtek Semiconductor Inc |
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HT56RB688 Fiches technique(HTML) 11 Page - Holtek Semiconductor Inc |
11 / 164 page Pin Name I/O Configuration Option Description PC0/OSC1 PC1/OSC2 PC2/OSC3 PC3/OSC4 PC4/PWM0/SCS0 PC5/PWM1/PCLK PC6/PWM2/PINT I/O ERC or HIRC or EC 32.768kHz SIM0 VDDIO Bidirectional 7-bit input/output port. Software instructions determine if the pin is a CMOS output or Schmitt trigger input. A pull-high resistor can be connected to each pin determined by the PCPU register. OSC1 and OSC2 are connected to an external RC network or crystal, determined by configuration options, for the internal system clock. If the RC system clock option is selected, the OSC2 pin can be used as an I/O pin. The internal system can come from the internal high speed RC oscillator (HIRC) selected by configuration options. When the HIRC is selected as the system oscillator, the OSC1 and OSC2 pins can be used as normal I/O pins. The abbreviation EC stands for External Clock mode. In the EC mode, an external clock source is provided on OSC1 as the system clock. OSC3 and OSC4 are connected to a 32.768kHz crystal oscillator to form a clock source for f SUB or fSL. PWM0, PWM1 and PWM2 are pin-shared with PC4, PC5 and PC6 respectively. PC4 is also pin-shared with SCS0, the chip select pin for the Serial Interface Module 0. The power supply to PC4 can be selected to come from VDD or VDDIO determined by a configuration option. The PCLK is a peripheral clock output pin which is enabled by the ²PCKEN² in the SIM0CTRL register and pin-shared with PC5. The PINT is the external peripheral interrupt pin and pin-shared with PC6. PC7/RES I/O RES Schmitt Trigger reset input pin, active low. The RES pin is pin-shared with PC7 whose function is determined by a configuration option. When PC7 is configured as an I/O pin, software instructions determine if this pin is an open drain output or a Schmitt Trigger input without pull-high resistor. LCD VLCD P ¾ LCD power supply COM15/SEG80 COM14/SEG81 COM13/SEG82 COM12/SEG83 COM11/SEG84 COM10/SEG85 COM9/SEG86 COM8/SEG87 O ¾ COM15~COM8 are LCD driver outputs for LCD panel commons while SEG80~SEG87 are LCD driver outputs for LCD panel segments. These pins can be configured as segments or common LCD driver outputs by related LCD control bits. COM7~COM0 O ¾ LCD driver outputs for LCD panel commons. SEG79~SEG24 ¾ LCD driver outputs for LCD panel segments. SEG23~SEG16/ PF7~PF0 I/O ¾ LCD driver outputs for LCD panel segments. SEG23~SEG16 can be set as segment outputs or logic I/O pins by the LCD output control register LCDIO. SEG15~SEG8/ PE7~PE0 I/O ¾ LCD driver outputs for LCD panel segments. SEG15~SEG8 can be set as segment outputs or logic I/O pins by the LCD output control register LCDIO. SEG7~SEG0/ PD7~PD0 I/O ¾ LCD driver outputs for LCD panel segments. SEG7~SEG0 can be set as segment outputs or logical I/O pins by the LCD output control register LCDIO. HT56RB688 TinyPowerTM A/D type Smart Card OTP MCU with LCD, DAC, ISO 7816 and USB Interfaces Rev. 1.10 11 April 15, 2013 |
Numéro de pièce similaire - HT56RB688_13 |
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Description similaire - HT56RB688_13 |
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