参数资料
| 型号： | ADE7156ASTZF16-RL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 137/152页 |
| 文件大小： | 0K |
| 描述： | IC ENERGY METER 64-LQFP |
| 产品变化通告： | Product Discontinuance 27/Oct/2011 |
| 标准包装： | 1,500 |
| 输入阻抗： | * |
| 测量误差： | * |
| 电压 - 高输入/输出： | * |
| 电压 - 低输入/输出： | * |
| 电流 - 电源： | * |
| 电源电压： | * |
| 测量仪表类型： | * |
| 工作温度： | * |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 64-LQFP |
| 供应商设备封装： | 64-LQFP（10x10） |
| 包装： | 带卷 (TR) |
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ADE7116/ADE7156/ADE7166/ADE7169/ADE7566/ADE7569
In both master and slave modes, the data is transmitted on one
Continuous Mode, SPICONT (SPIMOD2[7]) = 1
edge of the SCLK signal and sampled on the other. It is important,
therefore, that the SPICPHA and SPICPOL bits be configured
the same for the master and slave devices.
SS (Slave Select Pin)
1.
2.
3.
4.
Write to the SPI2CTx SFR.
SS is asserted low, and a write routine is initiated.
Wait for the SPITxIRQ interrupt flag to write to SPI2CTx SFR.
Transfer continues until the SPI2CTx register and transmit
In SPI slave mode, a transfer is initiated by the assertion of SS
low. The SPI port then transmits and receives 8-bit data until
the data is concluded by the deassertion of SS according to the
SPICON bit setting. In slave mode, SS is always an input.
In SPI master mode, the SS (P0.7/T1) can be used to control
data transfer to a slave device. In the automatic slave select
control mode, the SS is asserted low to select the slave device
and then raised to deselect the slave device after the transfer is
complete. Automatic slave select control is enabled by setting the
AUTO_SS bit in the SPI Configuration SFR 1 (SPIMOD1,
Address 0xE8).
shift registers are empty.
5. The SPITxIRQ interrupt flag is set when the SPI2CTx
register is empty.
6. SS is deasserted high.
7. Write to SPI2CTx SFR to clear the SPITxIRQ interrupt flag.
Figure 110 shows the SPI output for certain automatic chip select
and continuous mode selections. Note that if the continuous mode
is not used, a short delay is inserted between transfers.
SS
SCLK
In a multimaster system, the SS can be configured as an input so
that the SPI peripheral can operate as a slave in some situations
and as a master in others. In this case, the slave selects for the
AUTO_SS = 1
SPICONT = 1
DIN
DIN1
DIN2
slaves controlled by this SPI peripheral should be generated
with general I/O pins.
DOUT
DOUT1
DOUT2
SPI MASTER OPERATING MODES
The double buffered receive and transmit registers can be used to
maximize the throughput of the SPI peripheral by continuously
streaming out data in master mode. The continuous transmit mode
SS
SCLK
is designed to use the full capacity of the SPI. In this mode, the
master transmits and receives data until the SPI/I 2 C transmit
buffer SFR (SPI2CTx, Address 0x9A) is empty at the start of
AUTO_SS = 1
SPICONT = 0
DIN
DIN1
DIN2
a byte transfer. Continuous mode is enabled by setting the
SPICONT bit (Bit 7) in the SPI Configuration SFR 2 (SPIMOD2,
Address 0xE9). The SPI peripheral also offers a single byte
DOUT
DOUT1
DOUT2
read/write function.
In master mode, the type of transfer is handled automatically,
depending on the configuration of the SPICONT bit in the SPI
Configuration SFR 2 (SPIMOD2, 0xE9). The following
SS
SCLK
procedures show the sequence of events that should be
performed for each master operating mode. Based on the SS
AUTO_SS = 0
SPICONT = 0
(MANUAL SS CONTROL)
DIN
DIN1
DIN2
configuration, some of these events take place automatically.
Procedures for Using SPI as a Master
Single Byte Write Mode, SPICONT (SPIMOD2[7]) = 0
DOUT
DOUT1
DOUT2
1.
2.
3.
4.
5.
6.
Write to the SPI2CTx SFR.
SS is asserted low, and a write routine is initiated.
The SPITxIRQ interrupt flag is set when the SPI2CTx
register is empty.
SS is deasserted high.
Write to SPI2CTx SFR to clear the SPITxIRQ interrupt
flag.
Write to SPI2CTx SFR to clear the SPITxIRQ interrupt
Figure 110. Automatic Chip Select and Continuous Mode Output
Note that reading the content of the SPI/I 2 C receive buffer SFR
(SPI2CRx, Address 0x9B) should be done using a 2-cycle
instruction set such as MOV A or SPI2CRX. Using a 3-cycle
instruction such as MOV 0x3D or SPI2CRX does not transfer
the right information into the target register.
flag.
Rev. B | Page 137 of 152
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| ADE7156ASTZF8 | 功能描述:IC ENERGY METER 64-LQFP RoHS:是 类别:集成电路 (IC) >> PMIC - 能量测量 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:* |
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