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参数资料
| 型号： | STM8AF52A8TAY |
| 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, PQFP48 |
| 封装： | 7 X 7 MM, ROHS COMPLIANT, LQFP-48 |
| 文件页数： | 10/120页 |
| 文件大小： | 2236K |
| 代理商： | STM8AF52A8TAY |
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STM8AF52/62xx, STM8AF51/61xx
Known limitations
Doc ID 14395 Rev 7
107/120
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.
13.2.3
Delay in STOP bit programming leading to reception of supplementary
byte
Description
When receiving one byte in master mode, the STOP bit in the I2C_CR2 register is
programmed just after ADDR bit is cleared in order to generate a STOP condition after the
reception of the byte. If the programming of the STOP bit is delayed after the end of the first
byte reception, the master may receive another byte before the STOP condition is generated
and a wrong data will be received.
Workaround
Mask interrupts while clearing the ADDR bit and programming the STOP bit. As TLI is not
maskable, this software workaround can not be implemented in applications using the TLI
interrupt.
13.2.4
START condition badly generated after misplaced STOP
Description
When the START bit is set in the I2C_CR2 register and a misplaced STOP occurs on the
bus thus leading to a bus error, the START condition on the bus may be badly generated by
the I2C peripheral (glitch on SDA resulting in SDA and SCL tied low simultaneously).
Workaround
When a bus error is detected (through a flag and/or interrupt), check if a START condition
was requested through the I2C_CR2 register. If so, a STOP condition should be generated
followed by a new START condition. This does not avoid the badly generated START
condition, but allows to resynchronize the network on the new START condition.
相关PDF资料 |
PDF描述 |
|---|---|
| STM8AF52A8TBU | 8-BIT, FLASH, 24 MHz, MICROCONTROLLER, PQFP48 |
| STM8AF52A8TCU | 8-BIT, FLASH, 24 MHz, MICROCONTROLLER, PQFP48 |
| STM8AF51A9TAU | 8-BIT, FLASH, 24 MHz, MICROCONTROLLER, PQFP64 |
| STM8AF51A9TCY | 8-BIT, FLASH, 24 MHz, MICROCONTROLLER, PQFP64 |
| STM8AF51A9TDU | 8-BIT, FLASH, 24 MHz, MICROCONTROLLER, PQFP64 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| STM8AF52A8TCX | 功能描述:8位微控制器 -MCU 8-Bit Automotive MCU CAN Line 128kb 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 |
| STM8AF52A8TCY | 功能描述:8位微控制器 -MCU 8-Bit Automotive MCU CAN Line 128kb 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 |
| STM8AF52A8TDX | 制造商:STMicroelectronics 功能描述:8 BITS MICROCONTR - Bulk 制造商:STMicroelectronics 功能描述:STM8 Series 8-bit 128 KB Flash 6 KB RAM 24 MHz Microcontroller - LQFP-48 |
| STM8AF52A8TDY | 功能描述:8位微控制器 -MCU 8-Bit Automotive MCU CAN Line 128kb 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 |
| STM8AF52A9 | 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 |
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