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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PIC12F683-E/MF датащи(PDF) 9 Page - Microchip Technology |
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PIC12F683-E/MF датащи(HTML) 9 Page - Microchip Technology |
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9 / 176 page  © 2007 Microchip Technology Inc. DS41211D-page 7 PIC12F683 2.0 MEMORY ORGANIZATION 2.1 Program Memory Organization The PIC12F683 has a 13-bit program counter capable of addressing an 8k x 14 program memory space. Only the first 2k x 14 (0000h-07FFh) for the PIC12F683 is physically implemented. Accessing a location above these boundaries will cause a wraparound within the first 2K x 14 space. The Reset vector is at 0000h and the interrupt vector is at 0004h (see Figure 2-1). FIGURE 2-1: PROGRAM MEMORY MAP AND STACK FOR THE PIC12F683 2.2 Data Memory Organization The data memory (see Figure 2-2) is partitioned into two banks, which contain the General Purpose Registers (GPR) and the Special Function Registers (SFR). The Special Function Registers are located in the first 32 locations of each bank. Register locations 20h-7Fh in Bank 0 and A0h-BFh in Bank 1 are General Purpose Registers, implemented as static RAM. Register locations F0h-FFh in Bank 1 point to addresses 70h-7Fh in Bank 0. All other RAM is unimplemented and returns ‘0’ when read. RP0 of the STATUS register is the bank select bit. RP0 0 → Bank 0 is selected 1 → Bank 1 is selected PC<12:0> 13 0000h 0004h 0005h 07FFh 0800h 1FFFh Stack Level 1 Stack Level 8 Reset Vector Interrupt Vector On-chip Program Memory CALL, RETURN RETFIE, RETLW Stack Level 2 Wraps to 0000h-07FFh Note: The IRP and RP1 bits of the STATUS register are reserved and should always be maintained as ‘0’s. |
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