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TMS370CX2X Datasheet(PDF) 9 Page - Texas Instruments |
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TMS370CX2X Datasheet(HTML) 9 Page - Texas Instruments |
9 / 60 page TMS370Cx2x 8-BIT MICROCONTROLLER SPNS018C – FEBRUARY 1993 – REVISED FEBRUARY 1997 9 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 memory map (continued) 256-Byte RAM (Register File/Stack) Reserved† Peripheral File Reserved† 256-Byte Data EEPROM Not Available‡ 8K-Byte 7FC0h Trap 15–0 7FECh Serial Communication Interface RX 7FEEh Timer 1 7FF0h Interrupt 3 7FF2h Interrupt 2 7FF4h Interrupt 1 7FF8h Reset 1000h Reserved† 1010h System Control 1020h Digital Port Control 1030h 1040h Timer 1 Control Vectors 7FDFh 7FEFh 7FF1h 7FF3h 7FF5h 7FF7h 7FF9h 100Fh 101Fh 102Fh 103Fh 104Fh – – – – – – – – – – – Program Memory (ROM/EPROM) Not Available‡ SPI Control Reserved† Reserved† Serial Communication Interface TX 7FFAh 7FFBh – – 7FFCh 7FFDh – 7FFEh 7FFFh – – 1050h 1060h 105Fh 10FFh – – 0000h 0100h 00FFh 1000h 10FFh 1100h 1EFFh 1F00h 1FFFh 2000h 5FFFh 6000h 6FFFh 7000h 7FFFh 8000h FFFFh 0FFFh Reserved† SCI1 Control 7FEDh – – 7FF6h Serial Peripheral Interface † Reserved means the address space is reserved for future expansion. ‡ Not available means the address space is not accessible. Figure 3. TMS370Cx2x Memory Map RAM / register file (RF) Locations within the RAM address space can serve as the RF, general-purpose read / write memory, program memory, or stack instructions. The TMS370Cx2x contains 256 bytes of internal RAM mapped beginning at location 0000h (R0) and continuing through location 00FFh (R255). The first two registers, R0 and R1, are also called register A and B, respectively. Some instructions implicitly use register A or B; for example, the instruction LDSP (load SP) assumes that the value to be loaded into the stack pointer is contained in register B. Registers A and B are the only registers cleared on reset. peripheral file (PF) The TMS370Cx2x control registers contain all the registers necessary to operate the system and peripheral modules on the device. The instruction set includes some instructions that access the PF directly. These instructions designate the register by the number of the PF relative to 1000h, preceded by P0 for a hexadecimal designator or P for a decimal designator. For example, the system-control register 0 (SCCR0) is located at address 1010h; its peripheral file hexadecimal designator is P010, and its decimal designator is P16. Table 4 shows the TMS370Cx2x PF address map. |
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