參數(shù)資料
型號: DSPIC33FJ256MC510-I/PF
廠商: Microchip Technology
文件頁數(shù): 81/136頁
文件大?。?/td> 0K
描述: IC DSPIC MCU/DSP 256K 100TQFP
產(chǎn)品培訓(xùn)模塊: dsPIC33F DMAC
Introduction to dsPIC33F Architecture Part 1
Asynchronous Stimulus
Introduction to dsPIC33F Architecture Part 2
特色產(chǎn)品: PIC24FJ/33FJ MCUs & dsPIC? DSCs
標(biāo)準(zhǔn)包裝: 90
系列: dsPIC™ 33F
核心處理器: dsPIC
芯體尺寸: 16-位
速度: 40 MIP
連通性: CAN,I²C,IrDA,LIN,SPI,UART/USART
外圍設(shè)備: 欠壓檢測/復(fù)位,DMA,電機控制 PWM,QEI,POR,PWM,WDT
輸入/輸出數(shù): 85
程序存儲器容量: 256KB(256K x 8)
程序存儲器類型: 閃存
RAM 容量: 16K x 8
電壓 - 電源 (Vcc/Vdd): 3 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 24x10b/12b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 100-TQFP
包裝: 托盤
產(chǎn)品目錄頁面: 654 (CN2011-ZH PDF)
配用: MA330013-ND - MODULE PLUG-IN DSPIC33 100TQFP
DV164033-ND - KIT START EXPLORER 16 MPLAB ICD2
DM240001-ND - BOARD DEMO PIC24/DSPIC33/PIC32
AC164323-ND - MODULE SKT FOR 100TQFP
49
4235K–8051–05/08
AT89C51RD2/ED2
Figure 14-3. UART Timings in Modes 2 and 3
14.2
Automatic Address Recognition
The automatic address recognition feature is enabled when the multiprocessor communication
feature is enabled (SM2 bit in SCON register is set).
Implemented in hardware, automatic address recognition enhances the multiprocessor commu-
nication feature by allowing the serial port to examine the address of each incoming command
frame. Only when the serial port recognizes its own address, the receiver sets RI bit in SCON
register to generate an interrupt. This ensures that the CPU is not interrupted by command
frames addressed to other devices.
If desired, the user may enable the automatic address recognition feature in mode 1.In this con-
figuration, the stop bit takes the place of the ninth data bit. Bit RI is set only when the received
command frame address matches the device’s address and is terminated by a valid stop bit.
To support automatic address recognition, a device is identified by a given address and a broad-
cast address.
Note:
The multiprocessor communication and automatic address recognition features cannot be
enabled in mode 0 (i. e. setting SM2 bit in SCON register in mode 0 has no effect).
14.2.1
Given Address
Each device has an individual address that is specified in SADDR register; the SADEN register
is a mask byte that contains don’t-care bits (defined by zeros) to form the device’s given
address. The don’t-care bits provide the flexibility to address one or more slaves at a time. The
following example illustrates how a given address is formed.
To address a device by its individual address, the SADEN mask byte must be 1111 1111b.
For example:
SADDR0101 0110b
SADEN1111 1100b
Given0101 01XXb
The following is an example of how to use given addresses to address different slaves:
Slave A:SADDR1111 0001b
SADEN1111 1010b
Given1111 0X0Xb
Slave B:SADDR1111 0011b
SADEN1111 1001b
Given1111 0XX1b
RI
SMOD0=0
Data byte
Ninth
bit
Stop
bit
Start
bit
RXD
D8
D7
D6
D5
D4
D3
D2
D1
D0
RI
SMOD0=1
FE
SMOD0=1
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