The temperature reading is in 癈 using a 16-bit sign-
extended twos complement format. Table 1 shows
examples of temperature and the corresponding data
for 12-bit resolution. With twos complement, the sign
bit(s) is set if the value is negative. If the device is con-
figured for 12-bit resolution, all bits in the LS byte are
valid; for a reduced resolution, bit 0 (11-bit mode), bits
0 to 1 (10-bit mode), and bits 0 to 2 (9-bit mode) are
undefined.
The result of a temperature conversion is automatically
compared to the values in the alarm registers to deter-
mine whether an alarm condition exists. Alarm thresh-
olds are represented as twos complement number.
With 8 bits available for sign and value, alarm thresh-
olds can be set in increments of 1癈. An alarm condi-
tion exists if a temperature conversion results in a value
that is either higher than or equal to the value stored
in the TH register or lower than or equal to the value
stored in the TL register. If a temperature alarm condi-
tion exists, the device responds to the Conditional
Search ROM command. The alarm condition is cleared
if a subsequent temperature conversion results in a
temperature reading within the boundaries defined by
the data in the TH and TL registers.
1-Wire Digital Thermometer with
Sequence Detect and PIO
DS28EA00
8
Maxim Integrated
ADDRRESS
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
0h
2
3
2
2
2
1
2
0
2
-1
2
-2
2
-3
2
-4
LS BYTE
1h
S
S
S
S
S
2
6
2
5
2
4
MS BYTE
TEMPERATURE
(癈)
DIGITAL OUTPUT
(BINARY)
DIGITAL OUTPUT
(HEX)
+85*
0000 0101 0101 0000
0550h
+25.0625
0000 0001 1001 0001
0191h
+10.125
0000 0000 1010 0010
00A2h
+0.5
0000 0000 0000 1000
0008h
0
0000 0000 0000 0000
0000h
-0.5
1111 1111 1111 1000
FFF8h
-10.125
1111 1111 0101 1110
FF5Eh
-25.0625
1111 1110 0110 1111
FE6Fh
-40
1111 1101 1000 0000
FD80h
Table 1. Temperature/Data Relationship
*The power-on reset value of the Temperature Readout register is +85?/SPAN>C.
ADDRRESS
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
2h
S
2
6
2
5
2
4
2
3
2
2
2
1
2
0
HIGH ALARM (TH)
3h
S
2
6
2
5
2
4
2
3
2
2
2
1
2
0
LOW ALARM (TL)
Register Detailed Descriptions
Temperature Readout Register Bitmap
Temperature Alarm Registers Bitmap
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
DS3920T-001+
IC CURRENT MIRROR 5:1 SOT23-6
DS4560LS-LO+T
IC SWITCH HOT-PLUG 12V 8-SOIC
DS600U+T&R
IC SENSOR TEMP 8-USOP
DS620U+
IC THERMOMETER/STAT DIG 8MSOP
DS7505U+T&R
IC DGTL THERMOMETER 2WIRE 8-USOP
DS75LVU+T&R
IC SENSOR TEMP DIGITAL 8MSOP
DS75LXS+
IC THERMOMETER/STAT DIG 8-SOIC
DS75U+T&R
IC THERMOMETER/STAT DIG 8-MSOP
相关代理商/技术参数
DS28EA00U+TR
制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:1-Wire Digital Thermometer with Sequence Detect and PIO
DS28EC20
制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:DS28EC20_1203
DS28EC20 T
制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:DS28EC20_1203
DS28EC20_11
制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:20Kb 1-Wire EEPROM
DS28EC20_1203
制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:DS28EC20_1203
DS28EC20+
功能描述:电可擦除可编程只读存储器 20Kb 1-Wire 电可擦除可编程只读存储器 RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8
DS28EC20+T
功能描述:电可擦除可编程只读存储器 20Kb 1-Wire 电可擦除可编程只读存储器 RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8
DS28EC20-224-BB+
制造商:Maxim Integrated Products 功能描述:- Rail/Tube