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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PIC17C44 датащи(PDF) 30 Page - Microchip Technology |
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PIC17C44 датащи(HTML) 30 Page - Microchip Technology |
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30 / 241 page  PIC17C4X DS30412C-page 30 © 1996 Microchip Technology Inc. TABLE 6-1: MODE MEMORY ACCESS Operating Mode Internal Program Memory Configuration Bits, Test Memory, Boot ROM Microprocessor No Access No Access Microcontroller Access Access Extended Microcontroller Access No Access Protected Microcontroller Access Access The PIC17C4X can operate in modes where the pro- gram memory is off-chip. They are the microprocessor and extended microcontroller modes. The micropro- cessor mode is the default for an unprogrammed device. Regardless of the processor mode, data memory is always on-chip. FIGURE 6-2: MEMORY MAP IN DIFFERENT MODES Microprocessor Mode 0000h FFFFh External Program Memory External Program Memory 0800h FFFFh 0000h 07FFh On-chip Program Memory Extended Microcontroller Mode Microcontroller Modes 0000h 07FFh 0800h FE00h FFFFh OFF-CHIP ON-CHIP OFF-CHIP ON-CHIP OFF-CHIP ON-CHIP 00h FFh 00h FFh 00h FFh OFF-CHIP ON-CHIP OFF-CHIP ON-CHIP OFF-CHIP ON-CHIP Config. Bits Test Memory Boot ROM PIC17C42, 0000h FFFFh External Program Memory External Program Memory 1000h/ FFFFh 0000h 0000h 0FFFh/1FFFh 1000h/2000h FE00h FFFFh OFF-CHIP ON-CHIP OFF-CHIP ON-CHIP OFF-CHIP ON-CHIP Config. Bits Test Memory Boot ROM 00h FFh 1FFh 120h OFF-CHIP ON-CHIP 00h FFh 1FFh 120h OFF-CHIP ON-CHIP 00h FFh 1FFh 120h OFF-CHIP ON-CHIP 0FFFh/1FFFh 2000h PIC17CR42, PIC17C42A PIC17C43, PIC17CR43, PIC17C44 On-chip Program Memory On-chip Program Memory On-chip Program Memory |
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