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参数资料
型号： AT32UC3A4256-C1UR
厂商： Atmel
文件页数： 82/94页
文件大小： 0K
描述： IC MCU 256K FLASH 100VFBGA
产品培训模块： AVR® UC3 Introduction
标准包装： 1
系列： AVR®32 UC3 A4
核心处理器： AVR
芯体尺寸： 32-位
速度： 66MHz
连通性： EBI/EMI，I²C，IrDA，MMC，SPI，SSC，UART/USART，USB OTG
外围设备： 欠压检测/复位，DMA，POR，WDT
输入/输出数： 88
程序存储器容量： 256KB（256K x 8）
程序存储器类型： 闪存
RAM 容量： 128K x 8
电压 - 电源 (Vcc/Vdd)： 1.65 V ~ 1.95 V
数据转换器： A/D 8x10b
振荡器型： 内部
工作温度： -40°C ~ 85°C
封装/外壳： 100-VFBGA
包装： 标准包装
其它名称： AT32UC3A4256-C1URDKR
83
32072SH–AVR32–10/2012
AT32UC3A3
SMBALERT bit may be set after reset
The SMBus Alert (SMBALERT) bit in the Status Register (SR) might be erroneously set after
system reset.
Fix/Workaround
After system reset, clear the SR.SMBALERT bit before commencing any TWI transfer.
10.2.13
TWIS
Clearing the NAK bit before the BTF bit is set locks up the TWI bus
When the TWIS is in transmit mode, clearing the NAK Received (NAK) bit of the Status Reg-
ister (SR) before the end of the Acknowledge/Not Acknowledge cycle will cause the TWIS to
attempt to continue transmitting data, thus locking up the bus.
Fix/Workaround
Clear SR.NAK only after the Byte Transfer Finished (BTF) bit of the same register has been
set.
TWIS stretch on Address match error
When the TWIS stretches TWCK due to a slave address match, it also holds TWD low for
the same duration if it is to be receiving data. When TWIS releases TWCK, it releases TWD
at the same time. This can cause a TWI timing violation.
Fix/Workaround
None.
10.2.14
MCI
MCI_CLK features is not available on PX12, PX13 and PX40
Fix/Workaround
MCI_CLK feature is available on PA27 only.
The busy signal of the responses R1b is not taken in account for CMD12
STOP_TRANSFER
It is not possible to know the busy status of the card during the response (R1b) for the com-
mands CMD12.
Fix/Workaround
The card busy line should be polled through the GPIO Input Value register (IVR) for com-
mands CMD12.
10.2.15
SSC
Frame Synchro and Frame Synchro Data are delayed by one clock cycle
The frame synchro and the frame synchro data are delayed from 1 SSC_CLOCK when:
- Clock is CKDIV
- The START is selected on either a frame synchro edge or a level
- Frame synchro data is enabled
- Transmit clock is gated on output (through CKO field)
Fix/Workaround
Transmit or receive CLOCK must not be gated (by the mean of CKO field) when START
condition is performed on a generated frame synchro.
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相关代理商/技术参数
参数描述
AT32UC3A4256-C1UT 功能描述:32位微控制器 - MCU 256k flash Ind RoHS:否 制造商:Texas Instruments 核心:C28x 处理器系列:TMS320F28x 数据总线宽度:32 bit 最大时钟频率:90 MHz 程序存储器大小:64 KB 数据 RAM 大小:26 KB 片上 ADC:Yes 工作电源电压:2.97 V to 3.63 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:LQFP-80 安装风格:SMD/SMT
AT32UC3A4256HHB-C1UR 功能描述:EDBG - EDBG 制造商:atmel 系列:* 零件状态:有效 标准包装:4,000
AT32UC3A4256S 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:32-bit AVR? Microcontroller
AT32UC3A4256S-C1UR 功能描述:32位微控制器 - MCU 256k flash Ind RoHS:否 制造商:Texas Instruments 核心:C28x 处理器系列:TMS320F28x 数据总线宽度:32 bit 最大时钟频率:90 MHz 程序存储器大小:64 KB 数据 RAM 大小:26 KB 片上 ADC:Yes 工作电源电压:2.97 V to 3.63 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:LQFP-80 安装风格:SMD/SMT
AT32UC3A4256S-C1UT 功能描述:32位微控制器 - MCU 256k flash Ind RoHS:否 制造商:Texas Instruments 核心:C28x 处理器系列:TMS320F28x 数据总线宽度:32 bit 最大时钟频率:90 MHz 程序存储器大小:64 KB 数据 RAM 大小:26 KB 片上 ADC:Yes 工作电源电压:2.97 V to 3.63 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:LQFP-80 安装风格:SMD/SMT
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