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ST6232BQ6 Folha de dados(PDF) 7 Page - STMicroelectronics |
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ST6232BQ6 Folha de dados(HTML) 7 Page - STMicroelectronics |
7 / 86 page 7/86 ST62T32B ST62E32B 1.2 PIN DESCRIPTIONS VDD and VSS. Power is supplied to the MCU via these two pins. VDD is the power connection and VSS is the ground connection. VDDp and VSSp. Power is supplied to the MCU I/Os independently from the rest of the chip using these two pins. These pins have to be connected to the VDD and VSS pins. It is not allowed to leave any of these pins unconnected or to apply different potentials respectively to VDD/VDDp and VSS/VSSp. AVDD and AVSS. Power is supplied to the MCUA/D converter independently from the rest of the chip using these two pins. OSCin and OSCout. These pins are internally connected to the on-chip oscillator circuit. A quartz crystal, a ceramic resonator or an external clock signal can be connected between these two pins. The OSCin pin is the input pin, the OSCout pin is the output pin. RESET. The active-low RESET pin is used to re- start the microcontroller. TEST/V PP. The TEST must be held at VSS for nor- mal operation. If TEST pin is connected to a +12.5V level during the reset phase, the EPROM/OTP programming Mode is entered. NMI. The NMI pin provides the capability for asyn- chronous interruption, by applying an external non maskable interrupt to the MCU. The NMI input is falling edge sensitive with Schmitt trigger charac- teristics. The user can select as option the availa- bility of an on-chip pull-up at this pin. PA0-PA7. These 8 lines are organised as one I/O port (A). Each line may be configured under soft- ware control as inputs with or without internal pull- up resistors, interrupt generating inputs with pull- up resistors, open-drain or push-pull outputs. PA2/OVF, PA3/PWM, PA4/CP1 and PA5/CP2 can be used respectively as overflow output pin, output compare pin, and as two input capture pins for the embedded 16-bit Auto-Reload Timer. In addition, PA4-PA5 can also be used as analog inputs for the A/D converter while PA0-PA3 can sink 20mA for direct LED or TRIAC drive. PB0,PB3-PB7 These 6 lines are organised as one I/O port (B). Each line may be configured under software control as inputs with or without internal pull-up resistors, interrupt generating inputs with pull-up resistors, open-drain or push-pull outputs, analog inputs for the A/D converter. PC5-PC7. These 3 lines are organised as one I/O port (C). Each line may be configured under soft- ware control as input with or without internal pull- up resistor, interrupt generating input with pull-up resistor, analog input for the A/D converter, open- drain or push-pull output. PD0-PD7. These 8 lines are organised as one I/O port (portD). Each line may be configured under software control as input with or without internal pull-up resistor, interrupt generating input with pull-up resistor, analog input open-drain or push- pull output. In adition, the pins PD5/TXD1 and PD4/RXD1 can be used as UART output (PD5/TXD1) or UART input (PD4/RXD1). The pins PD3/Sout, PD2/Sin and PD1/SCL can also be used respectively as data out, data in and Clock pins for the on-chip SPI. PE0-PE4. These 5 lines are organised as one I/O port (PE). Each line may be configured under soft- ware control as input with or without internal pull- up resistor, interrupt generation input with pull-up resistor, open-drain or push-pull output. In output mode, these lines can also sink 20mA for direct LED and TRIAC driving. TIMER. This is the TIMER 1 I/O pin. In input mode, it is connected to the prescaler and acts as ex- ternal timer clock or as control gate for the internal timer clock. In output mode, the TIMER pin outputs the data bit when a time-out occurs.The user can select as option the availability of an on-chip pull- up at this pin. 111 |
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Descrição semelhante - ST6232BQ6 |
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