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41594B датащи(PDF) 19 Page - Microchip Technology |
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41594B датащи(HTML) 19 Page - Microchip Technology |
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19 / 372 page ![]() 2011-2012 Microchip Technology Inc. Preliminary DS41594B-page 19 PIC12LF1840T48A 3.2.2 SPECIAL FUNCTION REGISTER The Special Function Registers are registers used by the application to control the desired operation of peripheral functions in the device. The registers asso- ciated with the operation of the peripherals are described in the appropriate peripheral chapter of this data sheet. 3.2.3 GENERAL PURPOSE RAM There are up to 80 bytes of GPR in each data memory bank. 3.2.3.1 Linear Access to GPR The general purpose RAM can be accessed in a non-banked method via the FSRs. This can simplify access to large memory structures. See Section 3.5.2 “Linear Data Memory” for more information. 3.2.4 COMMON RAM There are 16 bytes of common RAM accessible from all banks. FIGURE 3-2: BANKED MEMORY PARTITIONING 3.2.5 DEVICE MEMORY MAPS The memory maps for the device family are as shown in Table 3-2. 0Bh 0Ch 1Fh 20h 6Fh 70h 7Fh 00h Common RAM (16 bytes) General Purpose RAM (80 bytes maximum) Core Registers (12 bytes) Special Function Registers (20 bytes maximum) Memory Region 7-bit Bank Offset TABLE 3-2: MEMORY MAP TABLES Device Banks Table No. PIC12LF1840T48A 0-7 Table 3-3 8-23 Table 3-4 24-31 Table 3-5 31 Table 3-6 |
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