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參數(shù)資料
| 型號(hào)： | PIC12C67X |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | 8-Pin, 8-Bit CMOS Microcontroller with A/D Converter and EEPROM Data Memory |
| 中文描述： | 8引腳，8位CMOS微控制器與A / D轉(zhuǎn)換器和EEPROM數(shù)據(jù)存儲(chǔ)器 |
| 文件頁數(shù)： | 11/129頁 |
| 文件大?。?/td> | 931K |
| 代理商： | PIC12C67X |
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1999 Microchip Technology Inc.
DS30561B-page 11
PIC12C67X
4.0
MEMORY ORGANIZATION
4.1
Program Memory Organization
The PIC12C67X has a 13-bit program counter capable
of addressing an 8K x 14 program memory space.
For the PIC12C671 and the PIC12CE673, the first 1K x
14 (0000h-03FFh) is implemented.
For the PIC12C672 and the PIC12CE674, the first 2K
x 14 (0000h-07FFh) is implemented. Accessing a loca-
tion above the physically implemented address will
cause a wraparound. The reset vector is at 0000h and
the interrupt vector is at 0004h.
FIGURE 4-1:
PIC12C67X PROGRAM
MEMORY MAP AND STACK
PC<12:0>
13
0000h
0004h
0005h
07FFh
0800h
1FFFh
Stack Level 1
Stack Level 8
Reset Vector
Interrupt Vector
On-Chip Program
Memory
CALL, RETURN
RETFIE, RETLW
0400h
03FFh
Peripheral
(PIC12C672 and
PIC12CE674 only)
4.2
Data Memory Organization
The data memory is partitioned into two banks, which
contain the General Purpose Registers and the Special
Function Registers. Bit RP0 is the bank select bit.
RP0 (STATUS<5>) = 1
→
Bank 1
RP0 (STATUS<5>) = 0
→
Bank 0
Each Bank extends up to 7Fh (128 bytes). The lower
locations of each Bank are reserved for the Special
Function Registers. Above the Special Function Regis-
ters are General Purpose Registers implemented as
static RAM. Both Bank 0 and Bank 1 contain Special
Function Registers. Some "high use" Special Function
Registers from Bank 0 are mirrored in Bank 1 for code
reduction and quicker access.
Also note that F0h through FFh on the PIC12C67X is
mapped into Bank 0 registers 70h-7Fh as common
RAM.
4.2.1
GENERAL PURPOSE REGISTER FILE
The register file can be accessed either directly or indi-
rectly through the File Select Register FSR
(Section 4.5).
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