參數資料
型號: PIC16LF721T-I/ML
廠商: Microchip Technology
文件頁數: 13/135頁
文件大?。?/td> 0K
描述: MCU PIC 3.5KB FLASH 20QFN
標準包裝: 3,300
系列: PIC® XLP™ 16F
核心處理器: PIC
芯體尺寸: 8-位
速度: 16MHz
連通性: I²C,SPI,UART/USART
外圍設備: 欠壓檢測/復位,POR,PWM,WDT
輸入/輸出數: 17
程序存儲器容量: 7KB(4K x 14)
程序存儲器類型: 閃存
RAM 容量: 256 x 8
電壓 - 電源 (Vcc/Vdd): 1.8 V ~ 3.6 V
數據轉換器: A/D 12x8b
振蕩器型: 內部
工作溫度: -40°C ~ 85°C
封裝/外殼: 20-VFQFN 裸露焊盤
包裝: 帶卷 (TR)
PIC16(L)F720/721
DS41430C-page 14
Preliminary
2010-2011 Microchip Technology Inc.
2.2
Data Memory Organization
The data memory is partitioned into multiple banks
which contain the General Purpose Registers (GPRs)
and the Special Function Registers (SFRs). Bits RP0
and RP1 are bank select bits.
RP1
RP0
00
Bank 0 is selected
01
Bank 1 is selected
10
Bank 2 is selected
11
Bank 3 is selected
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
Registers are the General Purpose Registers,
implemented as static RAM. All implemented banks
contain Special Function Registers. Some frequently
used Special Function Registers from one bank are
mirrored in another bank for code reduction and
quicker access.
2.2.1
GENERAL PURPOSE REGISTER
FILE
The register file is organized as 128 x 8 bits in the
PIC16F720/LF720, 256 x 8 bits in the PIC16F721/
LF721. Each register is accessed either directly or
indirectly through the File Select Register (FSR), (Refer
2.2.2
SPECIAL FUNCTION REGISTERS
The Special Function Registers are registers used by
the CPU and peripheral functions for controlling the
desired operation of the device (refer to Table 2-2).
These registers are static RAM.
The Special Function Registers can be classified into
two sets: core and peripheral. The Special Function
Registers associated with the “core” are described in
this section. Those related to the operation of the
peripheral features are described in the section of that
peripheral feature.
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