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參數(shù)資料
| 型號： | PIC16LCR620AT-04I/SO |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 4 MHz, RISC MICROCONTROLLER, PDSO18 |
| 封裝： | 0.300 INCH, PLASTIC, MS-013, SO-18 |
| 文件頁數(shù)： | 13/128頁 |
| 文件大?。?/td> | 3677K |
| 代理商： | PIC16LCR620AT-04I/SO |
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2003 Microchip Technology Inc.
DS30235J-page 9
PIC16C62X
3.0
ARCHITECTURAL OVERVIEW
The high performance of the PIC16C62X family can be
attributed to a number of architectural features
commonly found in RISC microprocessors. To begin
with, the PIC16C62X uses a Harvard architecture, in
which, program and data are accessed from separate
memories using separate busses. This improves
bandwidth over traditional von Neumann architecture,
where program and data are fetched from the same
memory. Separating program and data memory further
allows instructions to be sized differently than 8-bit
wide data word. Instruction opcodes are 14-bits wide
making it possible to have all single word instructions.
A 14-bit wide program memory access bus fetches a
14-bit instruction in a single cycle. A two-stage pipeline
overlaps
fetch
and
execution
of
instructions.
Consequently, all instructions (35) execute in a single
cycle (200 ns @ 20 MHz) except for program branches.
The
PIC16C620(A)
and
PIC16CR620A
address
512 x 14 on-chip program memory. The PIC16C621(A)
addresses
1K x 14
program
memory.
The
PIC16C622(A) addresses 2K x 14 program memory.
All program memory is internal.
The PIC16C62X can directly or indirectly address its
register files or data memory. All special function
registers including the program counter are mapped in
the data memory. The PIC16C62X has an orthogonal
(symmetrical) instruction set that makes it possible to
carry out any operation on any register using any
Addressing mode. This symmetrical nature and lack of
‘special optimal situations’ make programming with the
PIC16C62X simple yet efficient. In addition, the
learning curve is reduced significantly.
The PIC16C62X devices contain an 8-bit ALU and
working register. The ALU is a general purpose
arithmetic unit. It performs arithmetic and Boolean
functions between data in the working register and any
register file.
The ALU is 8-bits wide and capable of addition,
subtraction, shift and logical operations. Unless
otherwise mentioned, arithmetic operations are two's
complement in nature. In two-operand instructions,
typically
one
operand
is
the
working
register
(W register). The other operand is a file register or an
immediate constant. In single operand instructions, the
operand is either the W register or a file register.
The W register is an 8-bit working register used for ALU
operations. It is not an addressable register.
Depending on the instruction executed, the ALU may
affect the values of the Carry (C), Digit Carry (DC), and
Zero (Z) bits in the STATUS register. The C and DC bits
operate as a Borrow and Digit Borrow out bit,
respectively, bit in subtraction. See the SUBLW and
SUBWF
instructions for examples.
A simplified block diagram is shown in Figure 3-1, with
a description of the device pins in Table 3-1.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| PIC16LF1454-E/ML | 制造商:Microchip Technology Inc 功能描述:7 KB FLASH, 512 BYTES RAM, 48 MHZ INT. OSC, 12 I/0, ENHANCED - Rail/Tube 制造商:Microchip Technology Inc 功能描述:IC MCU 8BIT 7KB FLASH 16QFN 制造商:Microchip Technology Inc 功能描述:8-bit Microcontrollers - MCU 7KB Flsh 512b RAM 48MHz Int Osc 12 I/0 |
| PIC16LF1454-E/P | 制造商:Microchip Technology Inc 功能描述:7 KB FLASH, 512 BYTES RAM, 48 MHZ INT. OSC, 12 I/0, ENHANCED - Rail/Tube 制造商:Microchip Technology Inc 功能描述:IC MCU 8BIT 7KB FLASH 14PDIP |
| PIC16LF1454-E/SL | 制造商:Microchip Technology Inc 功能描述:7 KB FLASH, 512 BYTES RAM, 48 MHZ INT. OSC, 12 I/0, ENHANCED - Rail/Tube 制造商:Microchip Technology Inc 功能描述:7 KB Flash, 512 bytes RAM, 48 MHz Int. Osc, 12 I/0, Enhanced Mid Range Core, USB 2.0, NanoWatt XLP |
| PIC16LF1454-E/ST | 制造商:Microchip Technology Inc 功能描述:7 KB FLASH, 512 BYTES RAM, 48 MHZ INT. OSC, 12 I/0, ENHANCED - Rail/Tube 制造商:Microchip Technology Inc 功能描述:IC MCU 8BIT 7KB FLASH 14TSSOP |
| PIC16LF1454-I/ML | 功能描述:8位微控制器 -MCU 7 KB Flash 512 bytes RAM 48 MHz Int Osc RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT |
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