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MCP19124 датащи(PDF) 69 Page - Microchip Technology |
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MCP19124 датащи(HTML) 69 Page - Microchip Technology |
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69 / 236 page ![]() 2016 Microchip Technology Inc. DS20005619A-page 69 MCP19124/5 10.0 MEMORY ORGANIZATION There are two types of memory in the MCP19124/5: • Program Memory • Data Memory: - Special Function Registers (SFRs) - General-Purpose RAM 10.1 Program Memory Organization The MCP19124/5 have a 13-bit program counter capable of addressing an 8000 x 14 program memory space. Only the first 4000 x 14 (0000h-0FFFh) is physically implemented. Addressing a location above this boundary will cause a wrap-around within the first 4000 x 14 space. The Reset vector is at 0000h and the interrupt vector is at 0004h (refer to Figure 10-1). The width of the program memory bus (instruction word) is 14 bits. Since all instructions are a single word, the MCP19124/5 have space for 8000 instructions. FIGURE 10-1: PROGRAM MEMORY MAP AND STACK FOR MCP19124/5 Unimplemented PC<12:0> 13 0000h 0004h 0005h 0FFFh 1FFFh Stack Level 1 Stack Level 8 Reset Vector Interrupt Vector On-chip Program Memory CALL, RETURN RETFIE, RETLW 1000h User IDs (1) Device ID (hardcoded) (1) Config Word (1) 2000h 2005h 2006h 2007h 200Ah 207Fh 20FFh 2003h 2004h ICD Instruction (1) Manufacturing Codes (1) Note 1: Not code protected. Shadows 000-FFFh 2008h Reserved for Manufacturing & Test (1) 2080h Calibration Words (1) 200Bh 208Fh 2090h Shadows 2000-20FFh 2100h 3FFFh Reserved |
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