参数资料
型号: 71M6531F-IMR/F
厂商: Maxim Integrated
文件页数: 49/121页
文件大小: 0K
描述: IC ENERGY METER 256KB 68-QFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
系列: *
FDS 6531/6532 005
Data Sheet 71M6531D/F-71M6532D/F
EECTRL Byte Written
READ
SCLK (output)
CNT Cycles (8 shown)
INT5
SDATA (input)
D7
D6
D5
D4
D3
D2
D1
D0
SDATA output Z
(HiZ)
BUSY (bit)
Figure 13: 3-Wire Interface. Read Command.
EECTRL Byte Written
Write -- No HiZ
SCLK (output)
SDATA (output)
INT5 not issued
CNT Cycles (0 shown)
D7
EECTRL Byte Written
Write -- HiZ
SCLK (output)
SDATA (output)
INT5 not issued
CNT Cycles (0 shown)
SDATA output Z
BUSY (bit)
(LoZ)
SDATA output Z
BUSY (bit)
(HiZ)
Figure 14: 3-Wire Interface. Write Command when CNT=0
EECTRL Byte Written
Write -- With HiZ and WFR
SCLK (output)
CNT Cycles (6 shown)
INT5
SDATA (out/in)
D7
D6
D5
(From 6520)
D4
D3
D2
BUSY
(From EEPROM)
READY
SDATA output Z
(LoZ)
(HiZ)
BUSY (bit)
Figure 15: 3-Wire Interface. Write Command when HiZ=1 and WFR=1
1.5.15 SPI Slave Port
The slave SPI port communicates directly with the MPU data bus and is able to read and write Data RAM
locations. It is also able to send commands to the MPU. The interface to the slave port consists of the
PCSZ, PCLK, PSDI and PSDO pins. These pins are multiplexed with the LCD segment driver pins SEG3
to SEG6. The port pins default to LCD driver pins. The port is enabled by setting the SPE bit.
A typical SPI transaction is as follows. While PCSZ is high, the port is held in an initialized/reset state.
During this state, PSDO is held in HiZ state and all transitions on PCLK and PSDI are ignored. When
PCSZ falls, the port will begin the transaction on the first rising edge of PCLK. A transaction consists of
an 8-bit command, a 16-bit address and then one or more bytes of data. The transaction ends when
PCSZ is raised. Some transactions may consist of a command only.
The last SPI command and address (if part of the command) are available to the MPU in registers
SP_CMD and SP_ADDR .
The SPI port supports data transfers at 1 Mb/s in mission mode and 16 kb/s in BROWNOUT mode. The
SPI commands are described in Table 49 and in Figure 16 illustrate the SPI Interface read and write tim-
ing.
Rev 2
49
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71M6531F-MR/F/PE3 功能描述:计量片上系统 - SoC Residential Energy Meter IC RoHS:否 制造商:Maxim Integrated 核心:80515 MPU 处理器系列:71M6511 类型:Metering SoC 最大时钟频率:70 Hz 程序存储器大小:64 KB 数据 RAM 大小:7 KB 接口类型:UART 可编程输入/输出端数量:12 片上 ADC: 安装风格:SMD/SMT 封装 / 箱体:LQFP-64 封装:Reel
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