Datasheet 搜索 > 8位微控制器 > Microchip（微芯） > PIC16F73T-I/SO 数据手册 > PIC16F73T-I/SO 用户编程技术手册 2/16 页
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PIC16F73T-I/SO 用户编程技术手册 - Microchip（微芯）
制造商:
Microchip（微芯）
分类:
8位微控制器
封装:
SOIC-28
描述:
MICROCHIP PIC16F73T-I/SO 微控制器, 8位, 闪存, PIC16F, 20 MHz, 7 KB, 192 Byte, 28 引脚, SOIC
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PIC16F73T-I/SO数据手册
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PIC16F7X
DS30324B-page 2 2002 Microchip Technology Inc.
2.0 PROGRAM MODE ENTRY
2.1 User Program Memory Map
The user memory space extends from 0x0000 to
0x1FFF (8K), or 0x0000 to 0x0FFF (4K). Table 2-1
shows the actual implementation of program memory
in the PIC16F7X family. Configuration memory begins
at 0x2000, and continues to 0x3FFF. The PC will incre-
ment from 0x0000 to 0x1FFF and wrap to 0x0000,
0x2000 to 0x3FFF and wrap around to 0x2000 (not to
0x0000).
Once in configuration memory, the highest bit of the PC
stays a ‘1’, thus always pointing to the configuration
memory. The only way to point to program memory is
to reset the part and re-enter Program/Verify mode, as
described in Section 2.3.
Configuration memory is selected when the PC points
to any address in the range of 0x2000-0x201F; how-
ever, only locations 0x2000 through 0x2007 are imple-
mented. Addressing locations beyond 0x201F will
access program memory (see Figure 2-1).
TABLE 2-1: IMPLEMENTATION OF
PROGRAM MEMORY IN THE
PIC16F7X FAMILY
2.2 ID Locations
A user may store identification information (ID) in four
ID locations mapped to [0x2000:0x2003]. It is recom-
mended that each ID location word is written as
‘11 1111 1000 bbbb’, where ‘bbbb’ is ID informa-
tion. The ID locations can be read after code protection
is enabled.
To understand the program memory read mechanism
after code protection is enabled, refer to Section 4.0.
Table 4-1 shows specific calculations and behavior for
each of the PIC16F7X devices.
Device Program Memory Size
PIC16F73 0x0000 – 0x0FFF (4K)
PIC16F74 0x0000 – 0x0FFF (4K)
PIC16F76 0x0000 – 0x1FFF (8K)
PIC16F77 0x0000 – 0x1FFF (8K)
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