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参数资料
| 型号： | STM8AF51AATBXXXX |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, FLASH, 24 MHz, MICROCONTROLLER, PQFP80 |
| 封装： | 14 X 14 MM, ROHS COMPLIANT, LQFP-80 |
| 文件页数： | 7/118页 |
| 文件大小： | 2173K |
| 代理商： | STM8AF51AATBXXXX |
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Known limitations
STM8AF51xx, STM8AF61xx
104/118
Doc ID 14395 Rev 6
Workaround
Reset the AL bit at least two instructions before the IRET instruction.
13.2
I2C interface
13.2.1
Misplaced NACK bit when receiving 2 bytes in master mode
Description
When receiving two bytes in master mode, the usual sequence is the following:
1.
Set POS and ACK bits of the I2C_CR2 register to 1.
2.
Wait for ADDR event (address sent bit in I2C_SR1 register). When ADDR is set to 1,
program ACK to 0 and clear ADDR.
3.
Wait for BTF event (byte transfer finished bit in I2C_SR1 register). When BTF is set to
1, program the STOP bit to 1 in the I2C_CR2 register, and read the 2 received bytes.
The NACK bit may be sent erroneously after the first byte.
Workaround
Use a different software sequence to clear ADDR and ACK bits:
1.
Wait till ADDR flag is set.
2.
Mask interrupts.
3.
Clear ADDR bit.
4.
Clear ACK bit.
5.
Re-enable interrupts.
As the TLI interrupt is not maskable, this software workaround can not be implemented in
applications using the TLI interrupt.
13.2.2
Data register corrupted
Description
The content of the shift register may be shifted to the left by 1 bit and the second read
operation will return an incorrect value when the following conditions are met:
●
BTF bit (last data received) set to 1
●
Software sequence (SET STOP, READ N-1, READ N) delayed (for instance by an
interrupt)
●
N-1 byte not read before the next SCL rising edge.
Workaround
Mask all active interrupts between the SET STOP and the READ N-1 instructions. As TLI is
not maskable, this software workaround can not be implemented in applications using the
TLI interrupt.
相关PDF资料 |
PDF描述 |
|---|---|
| STM8AF6179TCXXXY | 8-BIT, FLASH, 24 MHz, MICROCONTROLLER, PQFP64 |
| STM8AH5199TBXXXY | 8-BIT, FLASH, 24 MHz, MICROCONTROLLER, PQFP64 |
| STM8AH6169TBXXXY | 8-BIT, FLASH, 24 MHz, MICROCONTROLLER, PQFP64 |
| STM8AH6189TCXXXY | 8-BIT, FLASH, 24 MHz, MICROCONTROLLER, PQFP64 |
| STM8AH61A8TAXXXU | 8-BIT, FLASH, 24 MHz, MICROCONTROLLER, PQFP48 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| STM8AF51AATCY | 制造商:STMicroelectronics 功能描述:SADA_8BIT MCU FOR CABI(LF) |
| STM8AF51XX | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Automotive 8-bit MCU, with up to 128 Kbytes Flash, EEPROM, 10-bit ADC, timers, LIN, CAN, USART, SPI, I2C, 3 V to 5.5 V |
| STM8AF5268 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Automotive 8-bit MCU, with up to 128 Kbytes Flash, data EEPROM |
| STM8AF5268TAY | 制造商:STMicroelectronics 功能描述: |
| STM8AF5268TCY | 功能描述:8位微控制器 -MCU 8-Bit Automotive MCU CAN Line 32kb Flash RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
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