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參數(shù)資料
| 型號(hào)： | MAX6629-MAX6632 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | BACKSHELL |
| 中文描述： | 12位注冊(cè)數(shù)字溫度傳感器的串行接口 |
| 文件頁(yè)數(shù)： | 6/8頁(yè) |
| 文件大?。?/td> | 152K |
| 代理商： | MAX6629-MAX6632 |
MAX6629–MAX6632
12-Bit + Sign Digital Temperature Sensors
with Serial Interface
6
_______________________________________________________________________________________
finish. CS’s falling edge stops any conversion in
progress, and data is latched into the shift register.
Then the data clocks out at SO on SCK’s falling edge
with the sign bit (D15) first, followed by the MSB. Data
is sent in one 16-bit word, and CS must remain low until
all 16 bits are transferred. If CS goes high in the middle
of a transmission, it is necessary to wait the conversion
time (less than 300ms) before attempting a new read.
The serial data is composed of 12 + 1 data bits
(D15–D3) and 3 trailing bits (D2–D0). D2 is always low,
serving as the confirmation bit that the device has been
communicated with. The last 2 bits, D0 and D1, are
undefined and are always in high-impedance mode
(Table 1). The power-up state for SO is high imped-
ance. Figure 3 shows the detailed serial timing specifi-
cations for the SPI port. The temperature data format is
in two's complement format (Table 2).
Power Shutdown Mode
The MAX6629–MAX6632 do not have a built-in power
software shutdown mode. However, a power shutdown
mode is easily implemented utilizing an unused logic
gate. A typical CMOS or TTL logic output has enough
drive capability to serve as the power source if its out-
put voltage level exceeds 3V, as shown in Figure 1.
Drive the logic output low to provide a hardware shut-
down mode.
Idle Mode
The MAX6629–MAX6632 can be put into idle mode by
pulling CS low. Data can be clocked out when the
device is in idle mode.
Power-On Reset (POR)
The POR supply voltage of the MAX6629–MAX6632 is
typically 1.6V. Below this supply voltage the interface is
inactive and the data register is set to the POR state,
0°C.
When power is first applied and VCC rises above 1.6V
(typ), the device starts to convert, although temperature
reading is not recommended at VCC levels below 3.0V.
Figure 3. SPI Timing Diagram
D15
D0
D1
D2
D3
SCK
SO
tDV
tCSS
tDO
CS
tTR
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Sign
MSB
Data
LSB
Data
Low
High-Z
Table 1. Data Output Format
Table 2. Temperature Data Format
(Two’s Complement)
DIGITAL OUTPUT (BINARY)
TEMPERATURE
(°C)
D15–D3
D2
D1, D0
150
0,1001,0110,0000
0
XX
125
0,0111,1101,0000
0
XX
25
0,0001,1001,0000
0
XX
0.0625
0,0000,0000,0001
0
XX
0
0,0000,0000,0000
0
XX
-0.0625
1,1111,1111,1111
0
XX
-25
1,1110,0111,0000
0
XX
-55
1,1100,1001,0000
0
XX
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| MAX6629MTT+ | 制造商:Maxim Integrated Products 功能描述:TEMP SENSOR DGTL 3-WIRE/SPI 6TDFN EP - Rail/Tube |
| MAX6629MTT+T | 功能描述:板上安裝溫度傳感器 12-Bit + Sign Temperature Sensor RoHS:否 制造商:Omron Electronics 輸出類(lèi)型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
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| MAX6629MUT#TG16 | 功能描述:板上安裝溫度傳感器 12-Bit + Sign Temperature Sensor RoHS:否 制造商:Omron Electronics 輸出類(lèi)型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
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