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PIC17C756 Datasheet(PDF) 11 Page - Microchip Technology |
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PIC17C756 Datasheet(HTML) 11 Page - Microchip Technology |
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11 / 320 page  © 1997 Microchip Technology Inc. Preliminary DS30264A-page 11 PIC17C75X TABLE 3-1: PINOUT DESCRIPTIONS Name DIP No. PLCC No. TQFP No. I/O/P Type Buffer Type Description OSC1/CLKIN 47 50 39 I ST Oscillator input in crystal/resonator or RC oscillator mode. External clock input in external clock mode. OSC2/CLKOUT 48 51 40 O — Oscillator output. Connects to crystal or resonator in crystal oscillator mode. In RC oscillator or external clock modes OSC2 pin outputs CLKOUT which has one fourth the fre- quency (FOSC/4) of OSC1 and denotes the instruction cycle rate. MCLR/VPP 15 16 7 I/P ST Master clear (reset) input or Programming Voltage (VPP) input. This is the active low reset input to the chip. PORTA is a bi-directional I/O Port except for RA0 and RA1 which are input only. RA0/INT 56 60 48 I ST RA0 can also be selected as an external interrupt input. Interrupt can be configured to be on positive or negative edge. RA1/T0CKI 41 44 33 I ST RA1 can also be selected as an external interrupt input, and the interrupt can be configured to be on pos- itive or negative edge. RA1 can also be selected to be the clock input to the Timer0 timer/counter. RA2/SS/SCL 42 45 34 I/O ST RA2 can also be used as the slave select input for the SPI or the clock input for the I2C bus. High voltage, high current, open drain input/output port pin. RA3/SDI/SDA 43 46 35 I/O ST RA3 can also be used as the data input for the SPI or the data for the I2C bus. High voltage, high current, open drain input/output port pin. RA4/RX1/DT1 40 43 32 I/O † ST RA4 can also be selected as the USART1 (SCI) Asyn- chronous Receive or USART1 (SCI) Synchronous Data. RA5/TX1/CK1 39 42 31 I/O † ST RA5 can also be selected as the USART1 (SCI) Asyn- chronous Transmit or USART1 (SCI) Synchronous Clock. PORTB is a bi-directional I/O Port with software config- urable weak pull-ups. RB0/CAP1 55 59 47 I/O ST RB0 can also be the Capture1 input pin. RB1/CAP2 54 58 46 I/O ST RB1 can also be the Capture2 input pin. RB2/PWM1 50 54 42 I/O ST RB2 can also be the PWM1 output pin. RB3/PWM2 53 57 45 I/O ST RB3 can also be the PWM2 output pin. RB4/TCLK12 52 56 44 I/O ST RB4 can also be the external clock input to Timer1 and Timer2. RB5/TCLK3 51 55 43 I/O ST RB5 can also be the external clock input to Timer3. RB6/SCK 44 47 36 I/O ST RB6 can also be used as the master/slave clock for the SPI. RB7/SDO 45 48 37 I/O ST RB7 can also be used as the data output for the SPI. Legend: I = Input only; O = Output only; I/O = Input/Output; P = Power; — = Not Used; TTL = TTL input; ST = Schmitt Trigger input. † The output is only available by the Peripheral operation. |
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