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参数资料
| 型号： | 71M6521BE-IGT/F |
| 厂商： | Maxim Integrated |
| 文件页数： | 42/97页 |
| 文件大小： | 0K |
| 描述： | IC ENERGY METER 8K FLASH 64-LQFP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 160 |
| 系列： | Single Converter Technology® |
| 测量误差： | 0.4% |
| 电源电压： | 3 V ~ 3.6 V |
| 测量仪表类型： | 单相，双相 |
| 工作温度： | -40°C ~ 85°C |
| 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 |
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71M6521BE
Energy Meter IC
DATA SHEET
JANUARY 2008
A byte is read by writing the ‘Receive’ command (CMD = 0001) to EECTRL and waiting for the BUSY bit to fall. Upon comple-
tion, the received data is in EEDATA . The serial transmit and receive clock is 78kHz during each transmission, and the clock is
held in a high state until the next transmission. The bits in EECTRL are shown in Table 56.
The EEPROM interface can also be operated by controlling the DIO4 and DIO5 pins directly. However, controlling
DIO4 and DIO5 directly is discouraged, because it may tie up the MPU to the point where it may become too
busy to process interrupts .
Status
Bit
7
6
5
4
Name
ERROR
BUSY
RX_ACK
TX_ACK
Read/
Write
R
R
R
R
Reset
State
0
0
1
1
Polarity
Positive
Positive
Negative
Negative
Description
1 when an illegal command is received.
1 when serial data bus is busy.
0 indicates that the EEPROM sent an ACK bit.
0 indicates when an ACK bit has been sent to the EEPROM
CMD
0000
Operation
No-op. Applying the no-op command will stop the I 2 C clock
(SCK, DIO4). Failure to issue the no-op command will keep
the SCK signal toggling.
Positive,
0010
Receive a byte from EEPROM and send ACK.
3-0
CMD[3:0]
W
0000
see CMD
Table
0011
0101
Transmit a byte to EEPROM.
Issue a ‘STOP’ sequence.
0110
1001
Others
Receive the last byte from EEPROM and do not send ACK.
Issue a ‘START’ sequence.
No Operation, set the ERROR bit.
Table 56: EECTRL Status Bits
Three-Wire EEPROM Interface
A 500kHz three-wire interface, using SDATA, SCK, and a DIO pin for CS is available. The interface is selected with
DIO_EEX =3. The same 2-wire EECTRL register is used, except the bits are reconfigured, as shown in Table 57. When EECTRL
is written, up to 8 bits from EEDATA are either written to the EEPROM or read from the EEPROM, depending on the values of
the EECTRL bits.The timing diagrams in Figure 9 through Figure 13 describe the 3-wire EEPROM interface behavior. All
commands begin when the EECTRL register is written. Transactions start by first raising the DIO pin that is connected to CS.
Multiple 8-bit or less commands such as those shown in Figure 9 through Figure 13 are then sent via EECTRL and EEDATA .
When the transaction is finished, CS must be lowered. At the end of a Read transaction, the EEPROM will be driving SDATA,
but will transition to HiZ (high impedance) when CS falls. The firmware should then immediately issue a write command with
CNT=0 and HiZ=0 to take control of SDATA and force it to a low-Z state.
Page: 42 of 97
? 2005-2008 TERIDIAN Semiconductor Corporation
V1.0
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相关代理商/技术参数 |
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|---|---|
| 71M6521BE-IGTR/F | 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 |
| 71M6521BE-IGTR/F1 | 功能描述:计量片上系统 - SoC 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 |
| 71M6521DE | 制造商:TERIDIAN 制造商全称:TERIDIAN 功能描述:Energy Meter IC |
| 71M6521DE-DB | 制造商:Maxim Integrated Products 功能描述:Development Boards & Kits - 8051 71M6521DE Demo Brd |
| 71M6521DE-IGT/F | 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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