參數(shù)資料
型號: 12F629
廠商: Microchip Technology Inc.
英文描述: Twinaxial Cable; Impedance:150ohm; Conductor Size AWG:22; No. Strands x Strand Size:19 x 34; Jacket Material:FEP; Leaded Process Compatible:Yes; Temperature Max:200 C; Voltage Nom.:300V; Features:Aluminium Foil/Polyester Tape RoHS Compliant: Yes
中文描述: 8引腳基于閃存的8位CMOS微控制器
文件頁數(shù): 9/132頁
文件大?。?/td> 4925K
代理商: 12F629
2003 Microchip Technology Inc.
DS41190C-page 7
PIC12F629/675
2.0
MEMORY ORGANIZATION
2.1
Program Memory Organization
The PIC12F629/675 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 PIC12F629/675 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
PIC12F629/675
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
PIC12F629/675 devices. Each register is accessed,
either directly or indirectly, through the File Select
Register FSR (see Section 2.4).
PC<12:0>
13
000h
0004
0005
03FFh
0400h
1FFFh
Stack Level 1
Stack Level 2
Stack Level 8
RESET Vector
Interrupt Vector
On-chip Program
Memory
CALL, RETURN
RETFIE, RETLW
Note:
The IRP and RP1 bits STATUS<7:6> are
reserved and should always be maintained
as ‘0’s.
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