PIC16C773 Microchip Technology, PIC16C773 Datasheet - Page 11
PIC16C773
Manufacturer Part Number
PIC16C773
Description
28/40-Pin/ 8-Bit CMOS Microcontrollers w/ 12-Bit A/D
Manufacturer
Microchip Technology
Datasheet
1.PIC16C773.pdf
(200 pages)
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2.0
There are two memory blocks in each of these
PICmicro
gram Memory and Data Memory) has its own bus
so that concurrent access can occur.
Additional information on device memory may be found
in the PICmicro
(DS33023).
2.1
The PIC16C77X PICmicros have a 13-bit program
counter capable of addressing an 8K x 14 program
memory space. Each device has 4K x 14 words of pro-
gram memory. Accessing a location above the physi-
cally implemented address will cause a wraparound.
The reset vector is at 0000h and the interrupt vector is
at 0004h.
FIGURE 2-1:
Program
Memory
On-chip
1999 Microchip Technology Inc.
CALL, RETURN
RETFIE, RETLW
MEMORY ORGANIZATION
Program Memory Organization
®
microcontrollers. Each block (Pro-
PROGRAM MEMORY MAP
AND STACK
Interrupt Vector
Mid-Range Reference Manual,
Stack Level 8
Stack Level 2
Stack Level 1
Reset Vector
PC<12:0>
Page 0
Page 1
13
0000h
0004h
0005h
07FFh
0800h
0FFFh
1000h
Advance Information
3FFFh
2.2
The data memory is partitioned into multiple banks
which contain the General Purpose Registers and the
Special Function Registers. Bits RP1 and RP0 are the
bank select bits.
Each bank extends up to 7Fh (128 bytes). The lower
locations of each bank are reserved for the Special
Function Registers. Above the Special Function Regis-
ters are General Purpose Registers, implemented as
static RAM. All implemented banks contain special
function registers. Some “high use” special function
registers from one bank may be mirrored in another
bank for code reduction and quicker access.
2.2.1
The register file can be accessed either directly, or indi-
rectly through the File Select Register FSR.
= 00
= 01
= 10
= 11
RP1
Data Memory Organization
GENERAL PURPOSE REGISTER FILE
RP0
Bank0
Bank1
Bank2
Bank3
(STATUS<6:5>)
PIC16C77X
DS30275A-page 11
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