参数资料
型号: ADUC7121BBCZ
厂商: Analog Devices Inc
文件页数: 66/96页
文件大小: 0K
描述: IC ARM7TDMI MCU 126KB 108CSPBGA
标准包装: 1
系列: MicroConverter® ADuC7xxx
核心处理器: ARM7
芯体尺寸: 16/32-位
速度: 41.78MHz
连通性: I²C,SPI,UART/USART
外围设备: POR,PWM,WDT
输入/输出数: 32
程序存储器容量: 126KB(63K x 16)
程序存储器类型: 闪存
RAM 容量: 8K x 8
电压 - 电源 (Vcc/Vdd): 3 V ~ 3.6 V
数据转换器: A/D 9x12b,D/A 4x12b
振荡器型: 内部
工作温度: -10°C ~ 95°C
封装/外壳: 108-LFBGA,CSPBGA
包装: 托盘
Data Sheet
ADuC7121
Rev. B | Page 69 of 96
Bit
Name
Description
4
I2CSRxFO
Slave Rx FIFO overflow.
This bit is set to 1 when a byte is written to the Rx FIFO when it is already full.
This bit is cleared in all other conditions.
3
I2CSRXQ
I2C slave receive request bit.
This bit is set to 1 when the Rx FIFO of the slave is not empty. This bit causes an interrupt to occur if the I2CSRXENI
bit in I2CxSCTL is set.
The Rx FIFO must be read or flushed to clear this bit.
2
I2CSTXQ
I2C slave transmit request bit.
This bit is set to 1 when the slave receives a matching address followed by a read.
If the I2CSETEN bit in I2CxSCTL is = 0, this bit goes high just after the negative edge of SCL during the read bit
transmission.
If the I2CSETEN bit in I2CxSCTL is = 1, this bit goes high just after the positive edge of SCL during the read bit
transmission. This bit causes an interrupt to occur if the I2CSTXENI bit in I2CxSCTL is set.
This bit is cleared in all other conditions.
1
I2CSTFE
I2C slave FIFO underflow status bit.
This bit is high if the Tx FIFO is empty when a master requests data from the slave. This bit asserts at the rising edge
of SCL during the read bit.
This bit clears in all other conditions.
0
I2CETSTA
I2C slave early transmit FIFO status bit.
If the I2CSETEN bit in I2CxSCTL is = 0, this bit goes high if the slave Tx FIFO is empty.
If the I2CSETEN bit in I2CxSCTL is = 1, this bit goes high just after the positive edge of SCL during the write bit
transmission. This bit asserts once only for a transfer.
This bit is cleared after being read.
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