參數(shù)資料
型號(hào)： DS7505U+T&R
廠商： Maxim Integrated
文件頁(yè)數(shù)： 12/14頁(yè)
文件大?。?/td> 197K
描述： IC DGTL THERMOMETER 2WIRE 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： -55°C ~ 125°C
精確度： ±2°C（最小值）
拓?fù)洌?/td> ADC（三角積分型），比較器，寄存器庫(kù)
輸出類型： I²C?/SMBus?
輸出警報(bào)： 無(wú)
輸出風(fēng)扇： 無(wú)
電源電壓： 1.7 V ~ 3.7 V
工作溫度： -55°C ~ 125°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)
Copy Data [48h]
0100 1000
Copies data from all SRAM shadow registers to
EEPROM. It is recommended that a Copy Data com-
mand be performed after writing EEPROM-backed
memory locations to guarantee data integrity in the
event of a power loss. The master sends a START fol-
lowed by an address byte containing the DS7505 bus
address. The R/W bit must be a 0. The DS7505
responds with an ACK. If the next byte is a 0x48, the
DS7505 copies all Shadow RAM locations in EEPROM
memory.
Software POR [54h]
0101 0100
The master sends a START followed by an address
byte containing the DS7505 bus address. The R/W bit
must be a 0. The DS7505 responds with an ACK. If the
next byte is a 0x54, the DS7505 resets as if power had
been cycled, which stops temperature conversions and
resets all registers to their power-up states. No ACK is
sent by the IC after the POR command is received.
Afterwards, the DS7505 makes a single temperature
conversion or continuous temperature conversions,
depending on the state of the SD bit.
Digital Thermometer and Thermostat
12   ______________________________________________________________________________________
SCL
START
ADDRESS BYTE
A) READ 2 BYTES FROM THE TEMPERATURE, T
OS
, OR T
HYST
 REGISTER (CURRENT POINTER LOCATION)
SDA    S  1   0   0   1  A2  A1  A0  R   A
A
N
P
D7  D6  D5  D4  D3  D2 D1  D0
D7  D6  D5  D4  D3  D2  D1  D0
MS DATA BYTE
(FROM SLAVE)
LS DATA BYTE
(FROM SLAVE)
ACK
(SLAVE)
ACK
(MASTER)
NACK
(MASTER)
STOP
SCL
START
ADDRESS BYTE
E) READ FROM THE CONFIGURATION REGISTER (CURRENT POINTER LOCATION)
SDA    S  1   0   0   1  A2  A1  A0  R   A
N
P
D7  D6  D5  D4  D3  D2 D1  D0
MS DATA BYTE
(FROM SLAVE)
ACK
(SLAVE)
NACK
(MASTER)
STOP
SCL
START
ADDRESS BYTE
B) WRITE TO THE CONFIGURATION REGISTER
SDA    S  1   0   0   1  A2  A1  A0  W   A
A
A
P
0   0   0   0   0   0   0   1
D7  D6  D5  D4  D3  D2  D1  D0
POINTER BYTE
DATA BYTE
(FROM MASTER)
ACK
(SLAVE)
ACK
(SLAVE)
ACK
(SLAVE)
STOP
SCL
START
ADDRESS BYTE
C) WRITE TO THE T
OS
 OR T
HYST
 REGISTER
SDA    S  1   0   0   1  A2  A1  A0  W   A
A
0   0   0   0   0   0  P1  P0
D7  D6  D5  D4  D3  D2  D1  D0
POINTER BYTE
MS DATA BYTE
(FROM MASTER)
ACK
(SLAVE)
ACK
(SLAVE)
A
A
P
D7  D6  D5  D4  D3  D2  D1
LS DATA BYTE
(FROM MASTER)
ACK
(SLAVE)
ACK
(SLAVE)
STOP
SCL
START
ADDRESS BYTE
D) READ SINGLE BYTE (NEW POINTER LOCATION)
SDA    S  1   0   0   1  A2  A1  A0  W   A
A   S
0  0   0   0   0   0  P1  P0
1   0   0   1  A2  A1  A0
POINTER BYTE
ADDRESS BYTE
ACK
(SLAVE)
ACK
(SLAVE)
REPEAT
START
R   A
N
P
D7 D6  D5  D4  D3  D2  D1 D0
DATA BYTE
(FROM SLAVE)
ACK
(SLAVE)
NACK
(MASTER)
STOP
Figure 9. 2-Wire Interface Timing
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