參數(shù)資料
型號(hào): PIC16C505
廠商: Microchip Technology Inc.
英文描述: 14-Pin, 8-Bit CMOS Microcontroller(每個(gè)I/O口有25mA驅(qū)動(dòng)/吸收電流,12個(gè)I/O口,帶WDT的微控制器)
中文描述: 14引腳,8位CMOS微控制器(每個(gè)的I / O口有25毫安驅(qū)動(dòng)/吸收電流,12個(gè)的I / O口,帶看門狗的微控制器)
文件頁數(shù): 11/80頁
文件大小: 617K
代理商: PIC16C505
1998 Microchip Technology Inc.
Preliminary
DS40192A-page 11
PIC16C505
4.0
MEMORY ORGANIZATION
PIC16C505 memory is organized into program mem-
ory and data memory. For the PIC16C505, a paging
scheme is used. Program memory pages are accessed
using one STATUS register bit. Data memory banks
are accessed using the File Select Register (FSR).
4.1
Program Memory Organization
The PIC16C505 devices have a 12-bit Program
Counter (PC).
The 1K x 12 (0000h-03FFh) for the PIC16C505 are
physically
implemented.
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 4-1).
Location 03FFh (PIC16C505) contains the internal
clock oscillator calibration value. This value should
never be overwritten.
Refer
to
Figure 4-1.
FIGURE 4-1:
PROGRAM MEMORY MAP
AND STACK FOR THE
PIC16C505
CALL, RETLW
PC<11:0>
Stack Level 1
Stack Level 2
U
S
12
0000h
7FFh
01FFh
0200h
Reset Vector (note 1)
Note 1: Address 0000h becomes the
effective reset vector. Location
03FFh (PIC16C505) contains the
MOVLW XX
INTERNAL RC oscillator
calibration value.
1024 Word
03FFh
0400h
On-chip Program
Memory
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