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參數(shù)資料
| 型號： | pic16c622a |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | EPROM-Based 8-Bit CMOS Microcontroller(8位CMOS微控制器) |
| 中文描述： | 存儲器為基礎(chǔ)的8位CMOS微控制器（8位的CMOS微控制器） |
| 文件頁數(shù)： | 9/112頁 |
| 文件大?。?/td> | 1205K |
| 代理商： | PIC16C622A |
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1997 Microchip Technology Inc.
Preliminary
DS30235F-page 9
PIC16C62X(A)
3.0
ARCHITECTURAL OVERVIEW
The high performance of the PIC16C62X(A) family can
be attributed to a number of architectural features
commonly found in RISC microprocessors. To begin
with, the PIC16C62X(A) uses a Harvard architecture,
in which, program and data are accessed from sepa-
rate 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
Consequently, all instructions (35) execute in a sin-
gle-cycle (200 ns @ 20 MHz) except for program
branches.
The PIC16C620(A) addresses 512 x 14 on-chip pro-
gram 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(A) 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(A) have an orthog-
onal (symmetrical) instruction set that makes it possi-
ble 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(A) simple yet efficient. In addition, the
learning curve is reduced significantly.
of
instructions.
The PIC16C62X(A) 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-bit 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
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.
SUBLW
and
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PIC16C622A/JW | 功能描述:8位微控制器 -MCU 3.5KB 128 RAM 13 I/O 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 |
| PIC16C622A-04/P | 功能描述:8位微控制器 -MCU 3.5KB 128 RAM 13 I/O 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 |
| PIC16C622A-04/P | 制造商:Microchip Technology Inc 功能描述:IC 8-BIT CMOS MCU |
| PIC16C622A-04/SO | 功能描述:8位微控制器 -MCU 3.5KB 128 RAM 13 I/O 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 |
| PIC16C622A-04/SO | 制造商:Microchip Technology Inc 功能描述:8BIT CMOS MCU SMD 16C622 SOIC18 |
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