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PIC18F2221 Datasheet(PDF) 66 Page - Microchip Technology |
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PIC18F2221 Datasheet(HTML) 66 Page - Microchip Technology |
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66 / 402 page  PIC18F2221/2321/4221/4321 FAMILY DS39689F-page 66 © 2009 Microchip Technology Inc. FIGURE 6-5: DATA MEMORY MAP FOR PIC18F2221/2321/4221/4321 FAMILY DEVICES Bank 0 Bank 14 Bank 15 Data Memory Map BSR<3:0> = 0000 = 1111 080h 07Fh F80h FFFh 00h 7Fh 80h FFh Access Bank When a = 0, The BSR is ignored and the Access Bank is used. The first 128 bytes are General Purpose RAM (from Bank 0). The second 128 bytes are Special Function Registers (from Bank 15). When a = 1, The BSR specifies the Bank used by the instruction. F7Fh F00h EFFh 0FFh 000h Access RAM FFh 00h FFh 00h GPR SFR Unused Access RAM High Access RAM Low Bank 2 to Unused Read ‘00h’ = 1110 = 0010 (SFRs) Bank 1 = 0001 100h 1FFh GPR |
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