Datasheet 搜索 > 微控制器 > Microchip（微芯） > PIC16F628-20I/SO 数据手册 > PIC16F628-20I/SO 用户编程技术手册 3/22 页
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PIC16F628-20I/SO 用户编程技术手册 - Microchip（微芯）
制造商:
Microchip（微芯）
分类:
微控制器
封装:
SOIC-18
描述:
MICROCHIP PIC16F628-20I/SO 微控制器, 8位, 闪存, PIC16F, 20 MHz, 3.5 KB, 224 Byte, 18 引脚, SOIC
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PIC16F628-20I/SO数据手册
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2002 Microchip Technology Inc. Preliminary DS30034D-page 3
PIC16F62X
2.0 PROGRAM DETAILS
2.1 User Program Memory Map
The user memory space extends from 0x0000 to
0x1FFF. In Programming mode, the program memory
space extends from 0x0000 to 0x3FFF, with the first
half (0x0000-0x1FFF) being user program memory and
the second half (0x2000-0x3FFF) being configuration
memory. The PC will increment from 0x0000 to 0x1FFF
and wrap to 0x000, 0x2000 to 0x3FFF and wrap
around to 0x2000 (not to 0x0000). Once in configura-
tion memory, the highest bit of the PC stays a ‘1’, thus
always pointing to the configuration memory. The only
way to point to user program memory is to reset the
part and re-enter Program/Verify mode as described in
Section 2.3.
In the configuration memory space, 0x2000-0x200F
are physically implemented. However, only locations
0x2000 through 0x2007 are available. Other locations
are reserved. Locations beyond 0x200F will physically
access user memory (See Figure 2-1).
2.2 User ID Locations
A User may store identification information (ID) in four
User ID locations. The User ID locations are mapped in
[0x2000 : 0x2003]. These locations read out normally,
even after the code protection is enabled.
FIGURE 2-1: PROGRAM MEMORY MAPPING
Note 1: All other locations in PICmicro
®
MCU
configuration memory are reserved and
should not be programmed.
2: Only the low order 4 bits of the User ID
locations may be included in the device
checksum. See Section 3.1 for checksum
calculation details.
1FFF
2000
ID Location
ID Location
ID Location
ID Location
Reserved
Reserved
Device ID
Configuration Word
2000
2008
3FFF
0x3FF
Not Implemented
Implemented
1 KW
Implemented
2 KW
Implemented
0x07FF
2001
2002
2003
2004
2005
2006
2007
Implemented
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