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CR16MFS9 Datasheet(PDF) 11 Page - National Semiconductor (TI) |
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CR16MFS9 Datasheet(HTML) 11 Page - National Semiconductor (TI) |
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11 / 99 page  11 www.national.com 3.16 PIN DESCRIPTION Some pins have alternate functions which may be enabled. These pins can be individually configured as general pur- pose pins, even when the module they belong to is enabled. The following is a brief description of all CR16MHR6 pins. Table 2 Input Pins Signal Type Active Pin (* for a shared pin) Function X1CKI OSC High Main oscillator clock input. X2CKI OSC High 32kHz oscillator clock input. RESET CMOS Low Chip general reset pin. Schmitt trigger input, asynchronous. ISE CMOS Low Interrupt input for development system. T1B CMOS Prog. * Timer 1 input B. Shares pin with I/O port pin PF1. T2B CMOS Prog. * Timer 2 input B. Shares pin with I/O port pin PF5. RDX1 CMOS High * USART 1 receive data input. Shares pin with I/O port pin PG5. RDX2 CMOS High * USART 2 receive data input. Shares pin with I/O port pin PF4. ACH0 Analog * A2D converter channel 0. Shares pin with I/O port pin PI0 ACH1 Analog * A2D converter channel 1. Shares pin with I/O port pin PI1 ACH2 Analog * A2D converter channel 2. Shares pin with I/O port pin PI2 ACH3 Analog * A2D converter channel 3. Shares pin with I/O port pin PI3 ACH4 Analog * A2D converter channel 4. Shares pin with I/O port pin PI4 ACH5 Analog * A2D converter channel 5. Shares pin with I/O port pin PI5 ACH6 Analog * A2D converter channel 6. Shares pin with I/O port pin PI6 ACH7 Analog * A2D converter channel 7. Shares pin with I/O port pin PI7 MCS CMOS Low * SPI/MICROWIRE slave select. Shares pin with I/O port pin PG3. NMI CMOS Low External non-maskable interrupt. ENV0-44 CMOS Low * Strap pin on 44-pin package to select operating environment. ENV0-80 CMOS Low * Strap pin on 80-pin package to select operating environment. ENV1 CMOS Low * Strap pin to select operating environment. ENV2 CMOS Low Strap pin to select operating environment. Table 3 Output Pins Signal Type Active Pin (* for a shared pin) Function X1CKO OSC High Main oscillator clock output. X2CKO OSC High 32 kHz oscillator clock output. CLK CMOS High External reference clock for development environment. TDX1 CMOS High * USART 1 transmit data output. Shares pin with I/O port pin PG6. TDX2 CMOS High * USART 2 transmit data output. Shares pin with I/O port pin PF5. MRDY CMOS Low * SPI/MICROWIRE slave ready output. Shares pin with I/O port pin PG4 CLKOUT2 OSC High System clock divided-by-2 output (shared with the ENV1 pin in the 44-pin device) |
Similar Part No. - CR16MFS9 |
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Similar Description - CR16MFS9 |
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