参数资料
型号: PIC16F505-I/MG
厂商: Microchip Technology
文件页数: 10/44页
文件大小: 0K
描述: MCU PIC 1.5K FLASH 3X3 16QFN
产品培训模块: 8-bit PIC® Microcontroller Portfolio
标准包装: 120
系列: PIC® 16F
核心处理器: PIC
芯体尺寸: 8-位
速度: 20MHz
外围设备: POR,WDT
输入/输出数: 11
程序存储器容量: 1.5KB(1K x 12)
程序存储器类型: 闪存
RAM 容量: 72 x 8
电压 - 电源 (Vcc/Vdd): 2 V ~ 5.5 V
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 16-VFQFN 裸露焊盘
包装: 托盘
产品目录页面: 638 (CN2011-ZH PDF)
PIC12F508/509/16F505
DS41236E-page 18
2009 Microchip Technology Inc.
4.2
Program Memory Organization
For The PIC16F505
The PIC16F505 device has a 11-bit Program Counter
(PC) capable of addressing a 2K x 12 program memory
space.
The 1K x 12 (0000h-03FFh) for the PIC16F505 are
physically
implemented.
Refer
to
Accessing a location above this boundary will cause a
wrap-around within the first 1K x 12 space. The
effective Reset vector is at 0000h (see Figure 4-2).
Location
03FFh
contains
the
internal
oscillator
calibration
value.
This
value
should
never
be
overwritten.
FIGURE 4-2:
PROGRAM MEMORY MAP
AND STACK FOR THE
PIC16F505
4.3
Data Memory Organization
Data memory is composed of registers or bytes of
RAM. Therefore, data memory for a device is specified
by its register file. The register file is divided into two
functional groups: Special Function Registers (SFR)
and General Purpose Registers (GPR).
The Special Function Registers include the TMR0
register, the Program Counter (PCL), the STATUS
register, the I/O registers (ports) and the File Select
Register (FSR). In addition, Special Function Registers
are used to control the I/O port configuration and
prescaler options.
The General Purpose Registers are used for data and
control information under command of the instructions.
For the PIC12F508/509, the register file is composed of
7 Special Function Registers, 9 General Purpose
Registers and 16 or 32 General Purpose Registers
accessed by banking (see Figure 4-3 and Figure 4-4).
For the PIC16F505, the register file is composed of 8
Special Function Registers, 8 General Purpose
Registers and 64 General Purpose Registers accessed
by banking (Figure 4-5).
4.3.1
GENERAL PURPOSE REGISTER
FILE
The General Purpose Register file is accessed, either
directly or indirectly, through the File Select Register
CALL, RETLW
PC<11:0>
Stack Level 1
Stack Level 2
U
s
e
rMe
m
o
ry
Sp
a
c
e
12
0000h
7FFh
01FFh
0200h
Reset Vector(1)
Note
1:
Address 0000h becomes the
effective Reset vector. Location
03FFh contains the MOVLW XX
internal oscillator calibration value.
1024 Words
03FFh
0400h
On-chip Program
Memory
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