FN6912.1 April 15, 2010 SDA vs SCL Timing tR (Note 19) SDA and SCL Rise Time
參數(shù)資料
型號(hào)： ISL22317TFRTZ-TK
廠商： Intersil
文件頁(yè)數(shù)： 12/15頁(yè)
文件大小： 0K
描述： IC POT DGTL 128TP LN LP 10-TDFN
產(chǎn)品培訓(xùn)模塊： Solutions for Industrial Control Applications
標(biāo)準(zhǔn)包裝： 1,000
系列： XDCP™
接片： 128
電阻（歐姆）： 100k
電路數(shù)： 1
溫度系數(shù)： 標(biāo)準(zhǔn)值 ±10 ppm/°C
存儲(chǔ)器類型： 非易失
接口： I²C（設(shè)備位址）
電源電壓： 2.7 V ~ 5.5 V
工作溫度： -40°C ~ 125°C
安裝類型： 表面貼裝
封裝/外殼： 10-WFDFN 裸露焊盤
供應(yīng)商設(shè)備封裝： 10-TDFN-EP（3x3）
包裝： 帶卷 (TR)
6
FN6912.1
April 15, 2010
SDA vs SCL Timing
tR
(Note 19)
SDA and SCL Rise Time
From 30% to 70% of VCC
20 +
0.1*Cb
250
ns
tF
(Note 19)
SDA and SCL Fall Time
From 70% to 30% of VCC
20 +
0.1*Cb
250
ns
Cb
(Note 19)
Capacitive Loading of SDA or SCL
Total on-chip and off-chip
10
400
pF
Rpu
(Note 19)
SDA and SCL Bus Pull-up Resistor
Off-chip
Maximum is determined by tR and tF
For Cb = 400pF, max is about 2k
Ω ~ 2.5kΩ
For Cb = 40pF, max is about 15k
Ω ~ 20kΩ
1k
Ω
tSU:A
A1 Setup Time
Before START condition
600
ns
tHD:A
A1 Hold Time
After STOP condition
600
ns
NOTES:
7. Typical values are for TA = +25°C and 3.3V supply voltage.
8. LSB: [V(RW)127 – V(RW)0]/127. V(RW)127 and V(RW)0 are V(RW) for the DCP register set to 7F hex and 00 hex respectively. LSB is the
incremental voltage when changing from one tap to an adjacent tap.
9. ZSERROR = V(RW)0/LSB.
10. FSerror = [V(RW)127 – VCC]/LSB.
11. DNL = [V(RW)i – V(RW)i-1]/LSB-1, for i = 1 to 127, where i is the DCP register setting.
12. INL = [V(RW)i – i LSB – V(RW)0]/LSB for i = 1 to 127
13.
for i = 15 to 127 decimal, T = -40°C to +125°C. Max( ) is the maximum value of the wiper
voltage and Min ( ) is the minimum value of the wiper voltage over the temperature range.
14. MI =
|RW127 – RW0|/127. MI is a minimum increment. RW127 and RW0 are the measured resistances for the DCP register set to 7F hex and
00 hex respectively.
15. ROFFSET = RW0/MI, when measuring between RW and RL.
16. RDNL = (RWi – RWi-1)/MI -1, for i = 1 to 127.
17. RINL = [RWi – (MI i) – RW0]/MI, for i = 1 to 127.
18.
for i = 15 to 127, T = -40°C to +125°C. Max( ) is the maximum value of the resistance and Min ( ) is
the minimum value of the resistance over the temperature range.
19. Limits should be considered typical and are not production tested.
20. In rheostat mode, if a current is injected into the RW terminal, the magnitude of the current should be such that the developed potential difference
between RW and RL terminals is at least 300mV, even at the minimum wiper setting. This ensures that the recommended operating condition
of V(RW)
≥ V(RL) + 0.3V is satisfied and the part operates in its most accurate resistance. Minimum and Maximum wiper setting can be
calculated as follow, MIN code = (0.3V*127)/(Iw*Rtotal), Max code = [(VCC - 0.3V)*127]/(IW*RTOTAL).
21. tWC is the time from a valid STOP condition at the end of a Write sequence of I2C serial interface, to the end of the self-timed internal non-volatile
write cycle.
22. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by
characterization and are not production tested.
Operating Specifications Over the recommended operating conditions unless otherwise specified. (Continued)
SYMBOL
PARAMETER
TEST CONDITIONS
MIN
(Note 22)
TYP
(Note 7)
MAX
(Note 22)
UNIT
TCV
Max V RW
()
i
() Min V RW
()
i
()
–
Max V RW
()
i
() Min V RW
()
i
()
+
[] 2
----------------------------------------------------------------------------------------------
106
165°C
-----------------
×
=
+
TCR
Max Ri
() Min Ri
()
–
[]
Max Ri
() Min Ri
()
+
[] 2
----------------------------------------------------------------
10
6
165°C
-----------------
×
=
+
tSU:STO
tDH
tHIGH
tSU:STA
tHD:STA
tHD:DAT
tSU:DAT
SCL
SDA
(INPUT TIMING)
SDA
(OUTPUT TIMING)
tF
tLOW
tBUF
tAA
tR
tsp
ISL22317
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