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参数资料
| 型号： | TS80C51RD2-MCLB |
| 厂商： | ATMEL CORP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, 40 MHz, MICROCONTROLLER, PQCC68 |
| 封装： | PLASTIC, LCC-68 |
| 文件页数： | 29/74页 |
| 文件大小： | 689K |
| 代理商： | TS80C51RD2-MCLB |
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Rev. C - 06 March, 2001
35
TS80C51RA2/RD2
TS83C51RB2/RC2/RD2
TS87C51RB2/RC2/RD2
Software may examine FE bit after each reception to check for data errors. Once set, only software or a reset can
clear FE bit. Subsequently received frames with valid stop bits cannot clear FE bit. When FE feature is enabled,
RI rises on stop bit instead of the last data bit (See Figure 14. and Figure 15.).
Figure 14. UART Timings in Mode 1
Figure 15. UART Timings in Modes 2 and 3
6.6.2. 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 communication 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, you may enable the automatic address recognition feature in mode 1. In this configuration, 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 broadcast 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).
Data byte
RI
SMOD0=X
Stop
bit
Start
bit
RXD
D7
D6
D5
D4
D3
D2
D1
D0
FE
SMOD0=1
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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PDF描述 |
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| TS87C51RD2-MIMB | 8-BIT, OTPROM, 40 MHz, MICROCONTROLLER, PQFP64 |
| TS87C51RB2-EED | 8-BIT, OTPROM, MICROCONTROLLER, PQFP44 |
| TS87C51RD2-VIBD | 8-BIT, OTPROM, 40 MHz, MICROCONTROLLER, PQCC44 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TS80C51RD2-MCLD | 制造商:未知厂家 制造商全称:未知厂家 功能描述:8-Bit Microcontroller |
| TS80C51RD2-MCLR | 制造商:未知厂家 制造商全称:未知厂家 功能描述:8-Bit Microcontroller |
| TS80C51RD2-MCM | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:High Performance 8-bit Microcontroller |
| TS80C51RD2-MCMB | 制造商:未知厂家 制造商全称:未知厂家 功能描述:8-Bit Microcontroller |
| TS80C51RD2-MCMD | 制造商:未知厂家 制造商全称:未知厂家 功能描述:8-Bit Microcontroller |
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