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參數(shù)資料
| 型號(hào)： | EP9301-IQ |
| 廠商： | Cirrus Logic Inc |
| 文件頁數(shù)： | 3/5頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ARM920T MCU 166MHZ 208-LQFP |
| 標(biāo)準(zhǔn)包裝： | 36 |
| 系列： | EP9 |
| 核心處理器： | ARM9 |
| 芯體尺寸： | 16/32-位 |
| 速度： | 166MHz |
| 連通性： | EBI/EMI，以太網(wǎng)，I²C，IrDA，SPI，UART/USART，USB |
| 外圍設(shè)備： | AC'97，DMA，I²S，LED，MaverickKey，POR，PWM，WDT |
| 輸入/輸出數(shù)： | 19 |
| 程序存儲(chǔ)器類型： | ROMless |
| RAM 容量： | 32K x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 1.65 V ~ 3.6 V |
| 數(shù)據(jù)轉(zhuǎn)換器： | A/D 5x12b |
| 振蕩器型： | 外部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 208-LQFP |
| 包裝： | 托盤 |
| 其它名稱： | 598-1249 |
ER636E2
B
3
2) Temporarily disable the UART DMA RX interface by clearing the RXDMAE bit in the UART1DMACtrl reg-
ister.
3) Wait until the difference between the CURRENTx and BASEx registers in the DMA channel is equal to
N + 1.
At this point, the rest of the packet is guaranteed to have been written to memory. Using this method will
cause an extra byte to be read from the UART by the DMA channel and also written to memory. This last
byte should be ignored.
SDRAM Controller
Description 1
Using the SDRAM controller in auto-precharge mode will produce system instability at external bus speeds
greater than 50 MHz.
Workaround
Do not turn on the auto-precharge feature of the SDRAM controller if the external bus speed will be greater
than 50 MHz.
Description 2
When the SDRAM controller is configured for PRECHARGE ALL command, the actual sequence is not
always issued to the SDRAM device(s).
Workaround
Do a read from each SDRAM bank so that a PRECHARGE command is issued to each bank of the SDRAM
device. This will satisfy the required SDRAM initialization sequence.
Due to the effectiveness and simplicity of the software workaround, no silicon fix is planned.
RTC
Description
The internal RTC oscillator is susceptible to noise which can lead to extra clocks on the internal 32.768-kHz
signal.
Workaround
Please refer to application note AN265, “EP93xx RTC Oscillator Circuit”, which can be found at
No fix of this bug is planned for future silicon revisions.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EP9301-IQZ | 功能描述:微處理器 - MPU IC Entry-Level ARM9 SOC Processor RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:536 MHz 程序存儲(chǔ)器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324 |
| EP9302 | 制造商:CIRRUS 制造商全稱:Cirrus Logic 功能描述:High-speed ARM9 System-on-chip Processor with MaverickCrunch |
| EP9302A-Z | 制造商:Cirrus Logic 功能描述:- Bulk |
| EP9302-CQ | 制造商:Cirrus Logic 功能描述: |
| EP9302-CQ/E1 | 制造商:Cirrus Logic 功能描述: |
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