参数资料
型号: ADE7518ASTZF16
厂商: Analog Devices Inc
文件页数: 112/128页
文件大小: 0K
描述: IC ENERGY METER MCU 16K 64LQFP
产品变化通告: Product Discontinuance 27/Oct/2011
特色产品: ADE7518: Single-phase Energy-Measurement IC
标准包装: 160
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: 托盘
产品目录页面: 797 (CN2011-ZH PDF)

ADE7518
SERIAL PERIPHERAL INTERFACE (SPI)
The ADE7518 integrates a complete hardware serial peripheral
interface on-chip. The SPI is full duplex so that eight bits of data
are synchronously transmitted and simultaneously received.
This SPI implementation is double buffered, allowing users to
read the last byte of received data while a new byte is shifted in.
The next byte to be transmitted can be loaded while the current
byte is shifted out.
The SPI port can be configured for master or slave operation. The
physical interface to the SPI is via the MISO (P0.5), MOSI (P0.4),
SPI REGISTERS
Table 126. SPI SFR List
SCLK (P0.6), and SS (P0.7) pins, whereas the firmware interface
is via the SPI Configuration SFR 1 (SPIMOD1, 0xE8), the SPI
Configuration SFR 2 (SPIMOD2, 0xE9), the SPI Interrupt
Status SFR (SPISTAT, 0xEA), the SPI/I 2 C Transmit Buffer SFR
(SPI2CTx, 0x9A), and the SPI/I 2 C Receive Buffer SFR
(SPI2CRx, 0x9B).
Note that the SPI pins are shared with the I 2 C pins. Therefore, the
user can enable only one interface at a time. The SCPS bit in the
Configuration SFR (CFG, 0xAF) selects which peripheral is active.
SFR Address
0x9A
0x9B
0xE8
0xE9
0xEA
Name
SPI2CTx
SPI2CRx
SPIMOD1
SPIMOD2
SPISTAT
R/W
W
R
R/W
R/W
R/W
Length (Bits)
8
8
8
8
8
Default
0
0
0x10
0
0
Description
SPI/I 2 C Transmit Buffer (see Table 127).
SPI/I 2 C Receive Buffer (see Table 128).
SPI Configuration SFR 1 (see Table 129).
SPI Configuration SFR 2 (see Table 130).
SPI Interrupt Status (see Table 131).
Table 127. SPI/I 2 C Transmit Buffer SFR (SPI2CTx, 0x9A)
Bit
7 to 0
Mnemonic
SPI2CTx
Default
0
Description
SPI or I 2 C Transmit Buffer. When SPI2CTx SFR is written, its content is transferred to the transmit FIFO
input. When a write is requested, the FIFO output is sent on the SPI or I 2 C bus.
Table 128. SPI/I 2 C Receive Buffer SFR (SPI2CRx, 0x9B)
Bit
7 to 0
Mnemonic
SPI2CRx
Default
0
Description
SPI or I 2 C Receive Buffer. When SPI2CRx SFR is read, one byte from the receive FIFO output is
transferred to the SPI2CRx SFR. A new data byte from the SPI or I 2 C bus is written to the FIFO input.
Rev. 0 | Page 112 of 128
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