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COP888GD Datasheet(PDF) 33 Page - National Semiconductor (TI) |
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COP888GD Datasheet(HTML) 33 Page - National Semiconductor (TI) |
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33 / 42 page  Memory Map All RAM, ports and registers (except A and PC) are mapped into data memory address space. Address Contents S/ADD REG 0000 to 006F On-Chip RAM bytes (112 bytes) 0070 to 007F Unused RAM Address Space (Reads As All Ones) xx80 to xxAF Unused RAM Address Space (Reads Undefined Data) xxB0 Timer T3 Lower Byte xxB1 Timer T3 Upper Byte xxB2 Timer T3 Autoload Register T3RA Lower Byte xxB3 Timer T3 Autoload Register T3RA Upper Byte xxB4 Timer T3 Autoload Register T3RB Lower Byte xxB5 Timer T3 Autoload Register T3RB Upper Byte xxB6 Timer T3 Control Register xxB7 Comparator Select Register (CMPSL) xxB8 to xxBF Reserved xxC0 Timer T2 Lower Byte xxC1 Timer T2 Upper Byte xxC2 Timer T2 Autoload Register T2RA Lower Byte xxC3 Timer T2 Autoload Register T2RA Upper Byte xxC4 Timer T2 Autoload Register T2RB Lower Byte xxC5 Timer T2 Autoload Register T2RB Upper Byte xxC6 Timer T2 Control Register xxC7 WATCHDOG Service Register (Reg:WDSVR) xxC8 MIWU Edge Select Register (Reg:WKEDG) xxC9 MIWU Enable Register (Reg:WKEN) xxCA MIWU Pending Register (Reg:WKPND) xxCB Reserved xxCC Reserved xxCD to xxCF Reserved xxD0 Port L Data Register xxD1 Port L Configuration Register xxD2 Port L Input Pins (Read Only) xxD3 Reserved for Port L xxD4 Port G Data Register xxD5 Port G Configuration Register xxD6 Port G Input Pins (Read Only) xxD7 Port I Input Pins (Read Only) xxD8 Port C Data Register xxD9 Port C Configuration Register Address Contents S/ADD REG xxDA Port C Input Pins (Read Only) xxDB Reserved for Port C xxDC Port D xxDD to xxDF Reserved xxE0 to xxE5 Reserved xxE6 Timer T1 Autoload Register T1RB Lower Byte xxE7 Timer T1 Autoload Register T1RB Upper Byte xxE8 ICNTRL Register xxE9 MICROWIRE/PLUS Shift Register xxEA Timer T1 Lower Byte xxEB Timer T1 Upper Byte xxEC Timer T1 Autoload Register T1RA Lower Byte xxED Timer T1 Autoload Register T1RA Upper Byte xxEE CNTRL Control Register xxEF PSW Register xxF0 to FB On-Chip RAM, Mapped as Registers xxFC X Register xxFD SP Register xxFE B Register xxFF S Register 0100 to 017F On-Chip RAM, 128 Bytes Reading memory locations 0070H–007FH (Segment 0) will return all ones. Reading unused memory locations 0080H–00AFH (Segment 0) will return undefined data. Reading memory locations from other unused Segments (i.e., Segment 2, Segment 3, … etc.) will return undefined data. www.national.com 33 |
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