收藏本站
71M6545/71M6545H Data Sheet
Status
Bit
Name
Read/
Write
Reset
State
Polarity
Description
0110
1001
Others
Receive the last byte from the
EEPROM and do not send ACK.
Issue a START sequence.
No operation, set the ERROR bit.
The EEPROM interface can also be operated by controlling the DIO2 and DIO3 pins directly. The
direction of the DIO line can be changed from input to output and an output value can be written
with a single write operation, thus avoiding collisions (see Table 14 Port Registers (DIO0-14) ).
Therefore, no resistor is required in series SDATA to protect against collisions.
Three-Wire (μ-Wire) EEPROM Interface with Single Data Pin
A 500 kHz three-wire interface, using SDATA, SDCK, and a DIO pin for CS is available. The interface is
selected by setting DIO_EEX[1:0] = 10. The EECTRL bits when the three-wire interface is selected are
shown in Table 49 . 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.
Three-Wire (μ-Wire/SPI) EEPROM Interface with Separate Di/DO Pins
If DIO_EEX[1:0] = 11, the 71M6545/H three-wire interface is the same as above, except DI and DO are
separate pins. In this case, DIO3 becomes DO and DIO8 becomes DI. The timing diagrams are the
same as for DIO_EEX[1:0] = 10 except that all output data appears on DO and all input data is expected
on DI. In this mode, DI is ignored while data is being received on DO. This mode is compatible with SPI
modes 0,0 and 1,1 where data is shifted out on the falling edge of the clock and is strobed in on the rising
edge of the clock.
Table 49: EECTRL Bits for the 3-wire Interface
Control
Bit
7
6
5
4
3:0
Name
WFR
BUSY
HiZ
RD
CNT[3:0]
Read/
Write
W
R
W
W
W
Description
Wait for Ready. If this bit is set, the trailing edge of BUSY is delayed until
a rising edge is seen on the data line. This bit can be used during the
last byte of a Write command to cause the INT5 interrupt to occur when
the EEPROM has finished its internal write sequence. This bit is
ignored if HiZ=0.
Asserted while the serial data bus is busy. When the BUSY bit falls, an
INT5 interrupt occurs.
Indicates that the SD signal is to be floated to high impedance immediately
after the last SDCK rising edge.
Indicates that EEDATA ( SFR 0x9E ) is to be filled with data from EEPROM.
Specifies the number of clocks to be issued. Allowed values are 0
through 8. If RD = 1, CNT bits of data are read MSB first, and right
justified into the low order bits of EEDATA . If RD = 0, CNT bits are sent
MSB first to the EEPROM, shifted out of the MSB of EEDATA . If
CNT[3:0] is zero, SDATA simply obeys the HiZ bit.
The timing diagrams in Figure 15 through Figure 19 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 15 through Figure 19
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
drives SDATA, but transitions 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.
58
v2
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
720-10007-00300 CBL D-SUB 9PIN FMAL-25PIN FML 3M
720-10010-00025 CBL DSUB 9PIN FML-25PIN MAL .25M
720-10020-00300 CBL DSUB 9PIN FML-9PIN MALE 3M
720-10021-00300 CBL DSUB 9PIN FML-9PIN FEMAL 3M
72231-0881 8 POS T/P SHLD 4 GR ASSY
7250B PANEL KIT BOTTOM FOR R-1220 CASE
731-10061-00200 CBL DSUB HD 15FEMAL-15MALE 2.0M
73304-111 MJ HOR ESMT 8/8 H/O T&R
相关代理商/技术参数
71M6545-IGTR/F 功能描述:计量片上系统 - SoC Metrology Proc. (3P 64K Flsh .1%) 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
71M6545T-IGT/F 制造商:Maxim Integrated Products 功能描述:METROLOGY PROCESSORS - Rail/Tube
71M6545T-IGTR/F 制造商:Maxim Integrated Products 功能描述:3-PHASE AFE, 32KB FLASH, PRES TEMP SENSOR - Tape and Reel
71M6601 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:On-Chip Temperature Sensor Enables Localized Digital Temperature On-Chip Power Monitoring
71M6601-IF 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:On-Chip Temperature Sensor Enables Localized Digital Temperature On-Chip Power Monitoring
71M6601-IL 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:On-Chip Temperature Sensor Enables Localized Digital Temperature On-Chip Power Monitoring
71M6601-IL/F 功能描述:模数转换器 - ADC Isolated Sensor IC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32
71M6601-ILF 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:On-Chip Temperature Sensor Enables Localized Digital Temperature On-Chip Power Monitoring