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HC705P6AGRS/D 数据表(PDF) 25 Page - NXP Semiconductors |
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HC705P6AGRS/D 数据表(HTML) 25 Page - NXP Semiconductors |
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25 / 134 page ![]() General Release Specification Input/Output and Control Registers MC68HC705P6A — Rev. 1.0 General Release Specification Memory 2.5 Input/Output and Control Registers Figure 2-2 and Figure 2-3 briefly describe the I/O and control registers at locations $0000–$001F. Reading unimplemented bits will return unknown states, and writing unimplemented bits will be ignored. Figure 2-2. MC68HC705P6A I/O and Control Registers Memory Map Port A Data Register $0000 Port B Data Register $0001 Port C Data Register $0002 Port D Data Register $0003 Port A Data Direction Register $0004 Port B Data Direction Register $0005 Port C Data Direction Register $0006 Port D Data Direction Register $0007 Unimplemented $0008 Unimplemented $0009 SIOP Control Register $000A SIOP Status Register $000B SIOP Data Register $000C Reserved $000D Unimplemented $000E Unimplemented $000F Unimplemented $0010 Unimplemented $0011 Timer Control Register $0012 Timer Status Register $0013 Input Capture MSB $0014 Input Capture LSB $0015 Output Compare MSB $0016 Output Compare LSB $0017 Timer MSB $0018 Timer LSB $0019 Alternate Counter MSB $001A Alternate Counter LSB $001B EPROM Programming Register $001C A/D Converter Data Register $001D A/D Converter Control & Status Reg $001E Reserved $001F Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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