- 您现在的位置：买卖IC网 > PDF目录69018 > MAXQ3120-FFN (MAXIM INTEGRATED PRODUCTS INC) 16-BIT, FLASH, 8 MHz, RISC MICROCONTROLLER, PQFP80 PDF资料下载
参数资料
| 型号： | MAXQ3120-FFN |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 16-BIT, FLASH, 8 MHz, RISC MICROCONTROLLER, PQFP80 |
| 封装： | 14 X 20 MM, MQFP-80 |
| 文件页数： | 9/12页 |
| 文件大小： | 266K |
| 代理商： | MAXQ3120-FFN |
DS1620
6 of 12
1SHOT = One–Shot Mode. If 1SHOT is 1, the DS1620 will perform one temperature conversion upon
reception of the Start Convert T protocol. If 1SHOT is 0, the DS1620 will continuously perform
temperature conversion. This bit is stored in nonvolatile E2 memory, capable of at least 50,000 writes. The
DS1620 is shipped with 1SHOT=0.
For typical thermostat operation, the DS1620 will operate in continuous mode. However, for applications
where only one reading is needed at certain times or to conserve power, the one–shot mode may be used.
Note that the thermostat outputs (THIGH, TLOW, TCOM) will remain in the state they were in after the last
valid temperature conversion cycle when operating in one–shot mode.
OPERATION IN STAND–ALONE MODE
In applications where the DS1620 is used as a simple thermostat, no CPU is required. Since the
temperature limits are nonvolatile, the DS1620 can be programmed prior to insertion in the system. In
order to facilitate operation without a CPU, the CLK/ CONV pin (pin 2) can be used to initiate
conversions. Note that the CPU bit must be set to 0 in the configuration register to use this mode of
operation. Whether CPU=0 or 1, the 3–wire port is active. Setting CPU=1 disables the stand–alone mode.
To use the CLK/ CONV pin to initiate conversions, RST must be low and CLK/ CONV must be high. If
CLK/ CONV is driven low and then brought high in less than 10 ms, one temperature conversion will be
performed and then the DS1620 will return to an idle state. If CLK/ CONV is driven low and remains low,
continuous conversions will take place until CLK/ CONV is brought high again. With the CPU bit set to 0,
the CLK/ CONV will override the 1SHOT bit if it is equal to 1. This means that even if the part is set for
one–shot mode, driving CLK/ CONV low will initiate conversions.
3–WIRE COMMUNICATIONS
The 3–wire bus is comprised of three signals. These are the RST (reset) signal, the CLK (clock) signal,
and the DQ (data) signal. All data transfers are initiated by driving the RST input high. Driving the RST
input low terminates communication. (See Figures 4 and 5.) A clock cycle is a sequence of a falling edge
followed by a rising edge. For data inputs, the data must be valid during the rising edge of a clock cycle.
Data bits are output on the falling edge of the clock and remain valid through the rising edge.
When reading data from the DS1620, the DQ pin goes to a high-impedance state while the clock is high.
Taking RST low will terminate any communication and cause the DQ pin to go to a high-impedance
state.
Data over the 3–wire interface is communicated LSB first. The command set for the 3–wire interface as
shown in Table 4 is as follows.
Read Temperature [AAh]
This command reads the contents of the register which contains the last temperature conversion result.
The next nine clock cycles will output the contents of this register.
Write TH [01h]
This command writes to the TH (HIGH TEMPERATURE) register. After issuing this command the next
nine clock cycles clock in the 9–bit temperature limit which will set the threshold for operation of the
THIGH output.
相关PDF资料 |
PDF描述 |
|---|---|
| MAXQ7666BATM+ | RISC MICROCONTROLLER, QCC48 |
| MB-91110PMT2 | 32-BIT, MROM, 50 MHz, RISC MICROCONTROLLER, PQFP144 |
| MB86602CPF | SCSI BUS CONTROLLER, PQFP100 |
| MB86604LPFV | SCSI BUS CONTROLLER, PQFP100 |
| MB86605PMT | SCSI BUS CONTROLLER, PQFP144 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAXQ3120-FFN+ | 功能描述:IC MCU 32KB FLASH 80-MQFP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:MAXQ® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:260 系列:73S12xx 核心处理器:80515 芯体尺寸:8-位 速度:24MHz 连通性:I²C，智能卡，UART/USART，USB 外围设备:LED，POR，WDT 输入/输出数:9 程序存储器容量:64KB（64K x 8） 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:2K x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 5.5 V 数据转换器:- 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:68-VFQFN 裸露焊盘 包装:管件 |
| MAXQ3120-KIT | 制造商:Maxim Integrated Products 功能描述:MAXQ3120 EVALUATION KIT - Bulk |
| MAXQ314 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Single-Phase Power-Measurement IC with I2C Interface |
| MAXQ314+ | 功能描述:16位微控制器 - MCU Integrated Circuits (ICs) PMIC - Energy Metering - IC PWR MEASUREMENT 1PH 10-TQFN RoHS:否 制造商:Texas Instruments 核心:RISC 处理器系列:MSP430FR572x 数据总线宽度:16 bit 最大时钟频率:24 MHz 程序存储器大小:8 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:VQFN-40 安装风格:SMD/SMT |
| MAXQ314-KIT | 功能描述:开发板和工具包 - 其他处理器 MAXQ314 Eval Kit RoHS:否 制造商:Freescale Semiconductor 产品:Development Systems 工具用于评估:P3041 核心:e500mc 接口类型:I2C, SPI, USB 工作电源电压: |
发布紧急采购，3分钟左右您将得到回复。