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SE370C732AFZT Datasheet(PDF) 8 Page - Texas Instruments |
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SE370C732AFZT Datasheet(HTML) 8 Page - Texas Instruments |
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8 / 44 page  TMS370Cx32 8-BIT MICROCONTROLLER SPNS015C – FEBRUARY 1990 – REVISED FEBRUARY 1997 8 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 central processing unit (CPU) (continued) 256-Byte RAM (0000h–00FFh) Peripheral File Reserved† 7FC0h – 7FDFh PACT Interrupt 1-18 7FEEh – 7FF7h Reserved† 7FECh –7FEDh Interrupt 1 Reset 1020h – 102Fh Digital Port Control Vectors ADC1 7FFCh – 7FFDh 7FFEh – 7FFFh 0000h 0100h 0080h 0FFFh 1000h 10BFh 10C0h 1EFFh 1F00h 1FFFh 2000h 5FFFh 6000h FFFFh 00FFh Interrupts and Reset Vectors; Trap and PACT Vectors 7F9Bh 7F9Ch 7FFFh 8000h 7FF8h – 7FF9h 7FFAh – 7FFBh Peripheral File Control Registers 1010h – 101Fh 1050h – 105Fh System Control 1030h – 103Fh 1040h – 104Fh ADC1 Peripheral Control Trap 15 – 0 Reserved† Reserved† 256-Byte Data EEPROM Reserved† 8K-Byte ROM/EPROM Reserved† 7F9Ch – 7FBFh 7FE0h – 7FEBh 1000h – 100Fh 1060h – 106Fh 1070h – 107Fh Reserved† PACT Peripheral Control Reserved† Reserved† Reserved† Interrupt 2 Interrupt 3 Dual–Port RAM (0080h–00FFh) † Reserved means that the address space is reserved for future expansion. Figure 3. TMS370Cx32 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 the stack instructions. The TMS370Cx32 devices contain 256 bytes of internal RAM, memory-mapped beginning at location 0000h (R0) and continuing through location 00FFh (R255) which is shown in Figure 1. 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. dual-port RAM The upper 128 bytes of the register files (0080h – 00FFh) can be used by the PACT module to contain commands and definitions as well as timer values. Any RAM not used by PACT can be used as additional CPU register or as general-purpose memory. |
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