参数资料
型号: PIC16F676-E/SL
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 20 MHz, RISC MICROCONTROLLER, PDSO14
封装: 3.90 MM, LEAD FREE, PLASTIC, SOIC-14
文件页数: 122/132页
文件大小: 1344K
代理商: PIC16F676-E/SL
2010 Microchip Technology Inc.
DS40039F-page 9
PIC16F630/676
2.0
MEMORY ORGANIZATION
2.1
Program Memory Organization
The PIC16F630/676 devices have a 13-bit program
counter capable of addressing an 8K x 14 program
memory space. Only the first 1K x 14 (0000h-03FFh)
for the PIC16F630/676 devices is physically imple-
mented. Accessing a location above these boundaries
will cause a wrap around within the first 1K x 14 space.
The Reset vector is at 0000h and the interrupt vector is
at 0004h (see Figure 2-1).
FIGURE 2-1:
PROGRAM MEMORY MAP
AND STACK FOR THE
PIC16F630/676
2.2
Data Memory Organization
The data memory (see Figure 2-2) is partitioned into
two banks, which contain the General Purpose Regis-
ters and the Special Function Registers. The Special
Function Registers are located in the first 32 locations
of each bank. Register locations 20h-5Fh are General
Purpose Registers, implemented as static RAM and
are mapped across both banks. All other RAM is
unimplemented and returns ‘0’ when read. RP0
(STATUS<5>) is the bank select bit.
RP0 = 0 Bank 0 is selected
RP0 = 1 Bank 1 is selected
2.2.1
GENERAL PURPOSE REGISTER
FILE
The register file is organized as 64 x 8 in the
PIC16F630/676 devices. Each register is accessed,
either directly or indirectly, through the File Select
PC<12:0>
13
000h
0004
0005
03FFh
0400h
1FFFh
Stack Level 1
Stack Level 8
Reset Vector
Interrupt Vector
On-chip Program
Memory
CALL, RETURN
RETFIE, RETLW
Stack Level 2
Note:
The IRP and RP1 bits STATUS<7:6> are
reserved and should always be maintained
as ‘0’s.
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