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參數(shù)資料
| 型號(hào)： | DS28EA00U+T&R |
| 廠商： | Maxim Integrated |
| 文件頁數(shù)： | 8/29頁 |
| 文件大小： | 328K |
| 描述： | IC THERMOMETER 1-WIRE 8-USOP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 3,000 |
| 功能： | 溫度計(jì)，恒溫計(jì) |
| 傳感器類型： | 內(nèi)部 |
| 感應(yīng)溫度： | -40°C ~ 85°C |
| 精確度： | ±0.5°C（最小值） |
| 拓?fù)洌?/td> | 寄存器庫，變簽式暫存器 |
| 輸出類型： | 數(shù)字 |
| 輸出警報(bào)： | 是 |
| 輸出風(fēng)扇： | 無 |
| 電源電壓： | 3 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-TSSOP，8-MSOP（0.118"，3.00mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-uMAX |
| 包裝： | 帶卷 (TR) |
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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
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| DS28EC20+ | 功能描述:電可擦除可編程只讀存儲(chǔ)器 20Kb 1-Wire 電可擦除可編程只讀存儲(chǔ)器 RoHS:否 制造商:Atmel 存儲(chǔ)容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 |
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