Datasheet > AT80C51RD2_14

AT80C51RD2_14

更新时间： 2024-11-17 01:21:43

品牌	Logo	应用领域
爱特美尔 - ATMEL		/
页数	文件大小	规格书
4页	73K
描述
During UART Reception, Clearing REN May Generate Unexpected IT

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中文翻译

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AT80C51RD2_14 数据手册

Active Errata List

•

During UART Reception, Clearing REN May Generate Unexpected IT

SPI Interface - Transmission on Master Mode

SPI Interface - SPI SS pin Limitation on Master/Slave

SPI - SPI Slave Responding in a Multislave Configuration When Not Selected by the

Master and its SPDAT Register Loaded

•

SPI - SPI Slave Not Responding When Selected and Not Loaded

ALE Disabled Toggles During Internal MOVX

Timer 2 - Baud Rate Generator - No IT When TF2 is Set by Software

Timer 2 - Baud Rate Generator - Long Start Time

SPI Slave Mode/Data Corrupted

80C51 MCUs

32 kHz Oscillator for AT83C51IC2/T80C51ID2 Needs External Feed Back Resistor

RB8 Lost With JBC on SCON

C51 Core – Bad Exit of Power-down in X2 Mode

AT83C51RB2

AT83C51RC2

AT83C51IC2

AT80C51ID2

AT80C51RD2

Errata History

Rev

Lot Number

1st Prod.

Trouble List

above 00395

Nov 2001

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11

Errata Descriptions

1. During UART Reception, Clearing REN May Generate Unexpected IT

During UART reception, if the REN bit is cleared between a start bit detection and

the end of reception, the UART will not discard the data (RI is set).

Errata Sheet

Workaround

Test REN at the beginning of Interrupt routine just after CLR RI, and run the Inter-

rupt routine code only if REN is set.

2. SPI Interface - Transmission on Master Mode

A 9th bit is transmitted by the interface when the clock rate is set on divide by 2

mode and a positive polarity is selected; the SPR2, SPR1, SPR0 bits are cleared

(000) and CPOL = 1 on the SPCON register.

Workaround

Set the clock rate divide by 4 and X2 mode.

3. SPI Interface - SPI SS pin Limitation on Master/Slave

The SS pin of the SPI does not return to an I/O when a One-to-One Master/Slave

intercommunication is performed.

Workaround

4. SPI - SPI Slave Responding in a Multislave Configuration When Not

Selected by the Master and its SPDAT Register Loaded

In a multislave configuration, if the master is sending the Sck and the Tx data to all

the slaves, and only one slave is selected, the non-selected slaves respond and

generate the end of the transmission interruption (SPIF) if their SPDAT registers

are loaded before the transmission.

Workaround

4242B–8051–03/08

12 3 4

中文翻译

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与AT80C51RD2_14相关器件

型号	品牌	获取价格	描述	数据表
AT80C51RD2-3CSCM	ATMEL	获取价格	Microcontroller
AT80C51RD2-3CSIM	ATMEL	获取价格	Microcontroller
AT80C51RD2-3CSUL	INFINEON	获取价格	High Performance 8-bit Microcontroller
AT80C51RD2-3CSUL	MICROCHIP	获取价格	Microcontroller, 8-Bit, 30MHz, CMOS, PDIP40
AT80C51RD2-3CSUL	ATMEL	获取价格	High Performance 8-bit Microcontroller
AT80C51RD2-3CSUM	INFINEON	获取价格	High Performance 8-bit Microcontroller
AT80C51RD2-3CSUM	ATMEL	获取价格	80C51 High Performance ROM 8-bit Microcontroller
AT80C51RD2-RLRUM	ATMEL	获取价格	80C51 High Performance ROM 8-bit Microcontroller
AT80C51RD2-RLTIL	ATMEL	获取价格	Microcontroller
AT80C51RD2-RLTIM	ATMEL	获取价格	Microcontroller

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