參數(shù)資料
型號(hào): LTC2990CMS#PBF
廠商: LINEAR TECHNOLOGY CORP
元件分類: 電源管理
英文描述: 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO10
封裝: LEAD FREE, PLASTIC, MSOP-10
文件頁數(shù): 6/24頁
文件大小: 236K
代理商: LTC2990CMS#PBF
LTC2990
14
2990fa
APPLICATIONS INFORMATION
Figure 8. LTC2990 Serial Bus Repeated Read Byte Protocol
S
A
A S
W#
ADDRESS
COMMAND
A
0
1 0
DATA
b7:b0
0
10011a1:a0
ADDRESS
10011a1:a0
XXXXXb3:b0
1
2990 F07
P
A#
R
Figure 7. LTC2990 Serial Bus Read Byte Protocol
S
A
A S
W#
ADDRESS
COMMAND
A
0
1 0
A
0
DATA
b7:b0
0
10011a1:a0
ADDRESS
10011a1:a0
XXXXXb3:b0
1
2990 F08
P
A#
DATA
b7:b0
R
Table 3. LTC2990 Register Address and Contents
REGISTER ADDRESS*
REGISTER NAME
READ/WRITE
DESCRIPTION
00h
STATUS
R
Indicates BUSY State, Conversion Status
01h
CONTROL
R/W
Controls Mode, Single/Repeat, Celsius/Kelvin
02h
TRIGGER**
R/W
Triggers an Conversion
03h
N/A
Unused Address
04h
TINT (MSB)
R
Internal Temperature MSB
05h
TINT (LSB)
R
Internal Temperature LSB
06h
V1 (MSB)
R
V1, V1 – V2 or TR1 MSB
07h
V1 (LSB)
R
V1, V1 – V2 or TR1 LSB
08h
V2 (MSB)
R
V2, V1 – V2 or TR1 MSB
09h
V2 (LSB)
R
V2, V1 – V2 or TR1 LSB
0Ah
V3 (MSB)
R
V3, V3 – V4 or TR2 MSB
0Bh
V3 (LSB)
R
V3, V3 – V4 or TR2 LSB
0Ch
V4 (MSB)
R
V4, V3 – V4 or TR2 MSB
0Dh
V4 (LSB)
R
V4, V3 – V4 or TR2 LSB
0Eh
VCC (MSB)
R
VCC MSB
0Fh
VCC (LSB)
R
VCC LSB
*Register Address MSBs b7-b4 are ignored.
**Writing any value triggers a conversion. Data Returned reading this register address is the Status register.
Power-on reset sets all registers to 00h.
Table 2. I2C Base Address
HEX I2C BASE ADDRESS
BINARY I2C BASE ADDRESS
ADR1
ADR0
98h
1001 100X*
0
9Ah
1001 101X*
0
1
9Ch
1001 110X*
1
0
9Eh
1001 111X*
1
*X = R/W Bit
S
A
A DATA
W#
ADDRESS
COMMAND
A
0
0 b7:b0
DATA
b7:b0
0
10011a1:a0
XXXXXb3:b0
0
2990 F06
P
A
Figure 6. LTC2990 Serial Bus Repeated Write Byte Protocol
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