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PIC16HV540 Datasheet(PDF) 6 Page - Microchip Technology |
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PIC16HV540 Datasheet(HTML) 6 Page - Microchip Technology |
6 / 36 page PIC16HV540 DS40197A-page 6 Preliminary © 1998 Microchip Technology Inc. 4.0 MEMORY ORGANIZATION FIGURE 4-1: PIC16HV540 PROGRAM MEMORY MAP AND STACK PC<8:0> Stack Level 1 Stack Level 2 CALL, RETLW 9 000h 1FFh Reset Vector 0FFh 100h On-chip Program Memory Stack Level 3 Stack Level 4 FIGURE 4-2: PIC16HV540 REGISTER FILE MAP File Address 00h 01h 02h 03h 04h 05h 06h 07h 1Fh INDF(1) TMR0 PCL STATUS FSR PORTA PORTB General Purpose Registers Note 1: Not a physical register. 0Fh 10h 08h TRISA TRISB OPTION2 TABLE 4-1: SPECIAL FUNCTION REGISTER SUMMARY Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Value on Power-On Reset Value on MCLR and WDT Reset N/A TRIS I/O control registers (TRISA, TRISB) 1111 1111 1111 1111 N/A OPTION Contains control bits to configure Timer0 and Timer0/WDT prescaler --11 1111 --11 1111 N/A OPTION2 Contains control bits to configure pin changes, software enabled WDT, xx11 1111 xx11 1111 regulation and brown-out 00h INDF Uses contents of FSR to address data memory (not a physical register) xxxx xxxx uuuu uuuu 01h TMR0 8-bit real-time clock/counter xxxx xxxx uuuu uuuu 02h(1) PCL Low order 8 bits of PC 1111 1111 1111 1111 03h STATUS PCF PA1 PA0 TO PD ZDC C 1001 1xxx 100q quuu 04h FSR Indirect data memory address pointer 1xxx xxxx 1uuu uuuu 05h PORTA ———— RA3 RA2 RA1 RA0 ---- xxxx ---- uuuu 06h PORTB RB7 RB6 RB5 RB4 RB3 RB2 RB1 RB0 xxxx xxxx uuuu uuuu Legend: Shaded boxes = unimplemented or unused, – = unimplemented, read as '0' (if applicable) x = unknown, u = unchanged, q = value depends on condition. Note 1: The upper byte of the Program Counter is not directly accessible. See Section 4.5 of the PIC16C5X data sheet (DS30453) for an explanation of how to access these bits. 2: File address 07h is a general purpose register on the PIC16HV540. 3: PCF This bit is set to 1 after power up-reset (POR) or sleep command. 4: PCF This bit is set to 0 after a wake up on pin change event. |
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