参数资料
型号: PIC16C621-20/SS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 20 MHz, RISC MICROCONTROLLER, PDSO20
封装: 0.209 INCH, PLASTIC, MO-150, SSOP-20
文件页数: 28/121页
文件大小: 1202K
代理商: PIC16C621-20/SS
PIC16C62X
DS30235H-page 14
1999 Microchip Technology Inc.
4.2
Data Memory Organization
Figure 4-7) is partitioned into two banks, which contain the
General Purpose Registers and the Special Function Reg-
isters. Bank 0 is selected when the RP0 bit is cleared. Bank
1 is selected when the RP0 bit (STATUS <5>) is set. The
Special Function Registers are located in the first 32 loca-
tions of each bank. Register locations 20-7Fh (Bank0) on
the PIC16C620A/CR620A/621A and 20-7Fh (Bank0) and
A0-BFh (Bank1) on the PIC16C622 and PIC16C622A are
General Purpose Registers implemented as static RAM.
Some Special Purpose Registers are mapped in Bank 1.
Addresses F0h-FFh of bank1 are implemented as common
ram and mapped back to addresses 70h-7Fh in bank0 on
the PIC16C620A/621A/622A/CR620A.
4.2.1
GENERAL PURPOSE REGISTER FILE
The register file is organized as 80 x 8 in the
PIC16C620/621, 96 x 8 in the PIC16C620A/621A/
CR620A and 128 x 8 in the PIC16C622(A). Each is
accessed either directly or indirectly through the File
Select Register FSR (Section 4.4).
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