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M68ICS08GR 데이터시트(PDF) 219 Page - Freescale Semiconductor, Inc |
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M68ICS08GR 데이터시트(HTML) 219 Page - Freescale Semiconductor, Inc |
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219 / 408 page ![]() Input/Output Ports (I/O) Port C MC68HC908GR8 — Rev 4.0 Technical Data MOTOROLA Input/Output Ports (I/O) 219 16.5.3 Port C Input Pullup Enable Register The port C input pullup enable register (PTCPUE) contains a software configurable pullup device for each of the two port C pins. Each bit is individually configurable and requires that the data direction register, DDRC, bit be configured as an input. Each pullup is automatically and dynamically disabled when a port bit’s DDRC is configured for output mode. PTCPUE1–PTCPUE0 — Port C Input Pullup Enable Bits These writeable bits are software programmable to enable pullup devices on an input port bit. 1 = Corresponding port C pin configured to have internal pullup 0 = Corresponding port C pin internal pullup disconnected Address: $000E Bit 7 6 543 21 Bit 0 Read: 0 0 0 0 0 0 PTCPUE1 PTCPUE0 Write: Reset: 0 0 000 000 = Unimplemented Figure 16-12. Port C Input Pullup Enable Register (PTCPUE) Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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