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参数资料
| 型号： | DS1615 |
| 厂商： | DALLAS SEMICONDUCTOR |
| 元件分类： | 模拟信号调理 |
| 英文描述： | Temperature Recorder(温度记录器) |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDIP16 |
| 封装： | 0.300 INCH, DIP-16 |
| 文件页数： | 13/20页 |
| 文件大小： | 138K |
| 代理商： | DS1615 |
DS1615
052698 13/20
Samples Counter. These two counters can be used to
guarantee that the DS1615 data has not been cleared at
any time during a given period of time. The Current
Samples Counter counts the number of samples that
have occurred since the most recent data acquisition
operation was started (i.e., the number of samples since
the Sample Rate register was written to a non–zero
value). The Total Samples Counter counts the total
number of samples that have been recorded in the life of
the device (assuming the lithium energy source has not
been removed during that time). If the end user knows
the value in the Total Samples Counter before the data
acquisition operation is started, he can guarantee that
the DS1615 has not been cleared. If the Current Sam-
ples count equals the difference between the ending
value and beginning value of the Total Samples
Counter, then the DS1615 data has not been cleared
during that time frame.
As a fourth security measure, changing any value in the
RTC and Control registers (with the exception of the
Status register) will stop datalogging and clear the Mis-
sion–in–Progress (MIP) bit.
SERIAL INTERFACE
The DS1615 provides two different serial communica-
tions options; asynchronous and synchronous.
The mode of communication is selected via the COM-
SEL pin. When this pin is pulled high, the DS1615 oper-
ates in synchronous mode. In this mode, communica-
tion with the DS1615 is facilitated by the SCLK, I/O, and
RST pins. When COMSEL is pulled low or floated,
asynchronous communications is selected and com-
munication with the device occurs over the TX and RX
pins. The operation of each mode is discussed in further
detail below.
Asynchronous Communication
In asynchronous mode, the DS1615 operates as a
slave peripheral device which is read and written over a
half duplex asynchronous data interface at the fixed rate
of 9,600 bits per second. Data is received and trans-
mitted in 8–bit bytes using a standard asynchronous
serial communications format as shown in Figure 3.
This format is easily generated by the UART in most
systems. The DS1615 data format implements 10 bit
words including one start bit, eight data bits, and one
stop bit. Data is received by the DS1615 on the RX pin
and transmitted by the TX pin.
COMMUNICATION WORD FORMAT
Figure 3
START
BIT
DATA
BIT
STOP
BIT
D0
D1
D2
D3
D4
D5
D6
D7
Synchronous Communication
Synchronous communication is accomplished over the
3–wire bus which is composed of three signals. These
are the RST (reset), the SCLK (serial clock), and I/O
(data I/O) pins. The 3–wire bus operates at a maximum
data rate of 2 Mbps. All data transfers are initiated by
driving the RST input high and are terminated by driving
RST low. (See Figures 6 and 7.) 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. Data bits are output on the falling edge of the
clock and remain valid through the rising edge.
When reading data from the DS1615, the I/O pin goes to
a high impedance state when the clock is high. Taking
RST low will terminate any communication and cause
the I/O pin to go to a high impedance state.
General Communications Format
Communication with the DS1615 in both synchronous
and asynchronous modes is accomplished by first writ-
ing a command to the device. The command is then fol-
lowed by the parameters and/or data required by the
command. The command set for the DS1615 can be
seen in Table 3. Reads and writes to the DS1615 differ
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1615K | 功能描述:KIT EVAL TEMPERATURE RECORDER RoHS:否 类别:编程器，开发系统 >> 过时/停产零件编号 系列:- 标准包装:1 系列:- 传感器类型:CMOS 成像，彩色（RGB） 传感范围:WVGA 接口:I²C 灵敏度:60 fps 电源电压:5.7 V ~ 6.3 V 嵌入式:否 已供物品:成像器板 已用 IC / 零件:KAC-00401 相关产品:4H2099-ND - SENSOR IMAGE WVGA COLOR 48-PQFP4H2094-ND - SENSOR IMAGE WVGA MONO 48-PQFP |
| DS1615S | 功能描述:板上安装温度传感器 RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| DS1615S/T&R | 制造商:Maxim Integrated Products 功能描述:IC RECORDER TEMP 5V 16-SOIC |
| DS1615S/T&R | 功能描述:IC RECORDER TEMP 5V 16-SOIC RoHS:否 类别:集成电路 (IC) >> 时钟/计时 - 实时时钟 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- 类型:时钟/日历 特点:警报器，闰年，SRAM 存储容量:- 时间格式:HH:MM:SS（12/24 小时） 数据格式:YY-MM-DD-dd 接口:SPI 电源电压:2 V ~ 5.5 V 电压 - 电源，电池:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-WDFN 裸露焊盘 供应商设备封装:8-TDFN EP 包装:管件 |
| DS1615X | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:Temperature Recorder |
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