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TMS370C090A Datasheet(PDF) 9 Page - Texas Instruments |
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TMS370C090A Datasheet(HTML) 9 Page - Texas Instruments |
9 / 55 page ![]() TMS370Cx9x 8-BIT MICROCONTROLLER SPNS036B – JANUARY 1996 – REVISED FEBRUARY 1997 9 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 CPU (continued) Peripheral File Control Registers 1000h–100Fh Reserved 1010h–101Fh System Control 1020h–102Fh Digital Port Control 1030h–103Fh Reserved 1040h–104Fh Timer 1 Peripheral Control 1050h–106Fh Reserved 1070h–107Fh ADC3 Peripheral Control Vectors 7FC0h–7FDFh Trap 0 – 15 7FE0h–7FEBh Reserved 7FECh–7FEDh Analog-to-Digital Converter 3 7FEEh–7FF3h Reserved Reserved 7FF4h–7FF5h Timer 1 7FF6h–7FF7h Reserved 7FF8h–7FF9h Interrupt 1 7FFAh–7FFBh 7FFCh–7FFDh 7FFEh–7FFFh Reset 0000h 0080h 1000h 107Fh 1EFFh 1F00h Interrupts and Reset Vectors; Trap Vectors FFFFh Reserved† 8K-Byte EPROM (6000h – 7FFFh) 1FFFh 7FC0h 8000h Peripheral File 256-Byte Data EEPROM Reserved† Not Available‡ 007Fh 128-Byte RAM (0000h – 007Fh) (Register File / Stack) 0FFFh 1080h Not Available‡ 4K-Byte ROM (7000h – 7FFFh) 2000h 5FFFh 6000h 6FFFh 7000h 7FBFh 7FFFh Reserved † Reserved = the address space is reserved for future expansion. ‡ Not available = address space is unavailable in the mode illustrated. Figure 3. TMS370Cx9x Memory Map RAM / register file (RF) Locations within RAM address space can serve as the register file, general-purpose read/write memory, program memory, or stack instructions. The TMS370Cx9x device contains 128 bytes of internal RAM mapped beginning at location 0000h (R0) and continuing through location 007Fh (R127) which is shown in Figure 3. 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 TMS370Cx9x 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 peripheral file (PF) directly. These instructions designate the register by the number of the PF relative to 1000h, preceded by P0 for a hexadecimal designator or by 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 TMS370Cx9x peripheral files address map. |
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