參數(shù)資料
型號(hào): ISL90842UIV1427Z
廠商: INTERSIL CORP
元件分類: 數(shù)字電位計(jì)
英文描述: Quad Digitally Controlled Variable Resistors
中文描述: QUAD 50K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 256 POSITIONS, PDSO14
封裝: ROHS COMPLIANT, PLASTIC, TSSOP-14
文件頁(yè)數(shù): 5/10頁(yè)
文件大?。?/td> 678K
代理商: ISL90842UIV1427Z
5
FN8096.1
January 16, 2006
SDA vs SCL Timing
A0 and A1 Pin Timing
NOTES:
1. Typical values are for T
A
= 25°C and 3.3V supply voltage.
2. MI =
|
R
255
– R
0
|
/ 255. R
255
and R
0
are the measured resistances for the DCP register set to FF hex and 00 hex, respectively.
3. Roffset = R
255
/ MI, when measuring between R
W
and R
H
.
4. RDNL = (R
i
– R
i-1
) /
MI, for i = 32 to 255.
5. RINL = [R
i
– (MI i) – R
0
] / MI, for i = 32 to 255.
6. R
MATCH
= (R
i,x
– R
i,y
)
/ MI, for i = 0 to 255, x = 0 to 3 and y = 0 to 3.
6
125°C
7.
for i = 32 to 255, T = -40°C to 85°C. Max ( ) is the maximum value of the resistance and Min ( ) is the
minimum value of the resistance over the temperature range.
8. This parameter is not 100% tested.
t
SU:A
A1 and A0 setup time
Before START condition
600
ns
t
HD:A
A1 and A0 hold time
After STOP condition
600
ns
Operating Specifications
Over the recommended operating conditions unless otherwise specified.
(Continued)
SYMBOL
PARAMETER
TEST CONDITIONS
MIN
TYP
(NOTE 1)
MAX
UNIT
t
SU:STO
t
DH
t
HIGH
t
SU:STA
t
HD:STA
t
HD:DAT
t
SU:DAT
SCL
SDA
(INPUT TIMING)
SDA
(OUTPUT TIMING)
t
F
t
LOW
t
BUF
t
AA
t
R
t
HD:A
SCL
SDA IN
A0, A1
t
SU:A
CLK 1
START
STOP
TC
R
Max Ri
+
Min Ri
]
)
)
[
]
2
------------------------------–
----------------
×
=
ISL90842
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