FN8167.2 November 14, 2005 Increment/Decrement Timing NOTES: 1. Absolute linearity is utilized to determine actual wiper" />
參數(shù)資料
型號(hào)： X9252YV24IZ-2.7
廠商： Intersil
文件頁(yè)數(shù)： 18/20頁(yè)
文件大小： 0K
描述： IC POT DGTL QUAD 24-TSSOP
標(biāo)準(zhǔn)包裝： 62
系列： XDCP™
接片： 256
電阻（歐姆）： 2.8k
電路數(shù)： 4
溫度系數(shù)： 標(biāo)準(zhǔn)值 ±300 ppm/°C
存儲(chǔ)器類型： 非易失
接口： I²C（芯片選擇，設(shè)備位址，增/減）
電源電壓： 2.7 V ~ 5.5 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 24-TSSOP（0.173"，4.40mm 寬）
供應(yīng)商設(shè)備封裝： 24-TSSOP
包裝： 管件
產(chǎn)品目錄頁(yè)面： 1237 (CN2011-ZH PDF)
7
FN8167.2
November 14, 2005
Increment/Decrement Timing
NOTES:
1. Absolute linearity is utilized to determine actual wiper voltage versus expected voltage = [V(RW(n)(actual))-V(RW(n)(expected))]/MI
V(RW(n)(expected)) = n(V(RH)-V(RL))/255 + V(RL), with n from 0 to 255.
2. Relative linearity is a measure of the error in step size between taps = [V(RW(n+1))-(V(RW(n)) + MI)]/MI, with n from 0 to 254
3. 1 Ml = Minimum Increment = [V(RH)-V(RL)]/255.
4. Typical values are for TA = 25°C and nominal supply voltage.
5. This parameter is not 100% tested.
6. Ratiometric temperature coefficient = (V(RW)T1(n)-V(RW)T2(n))/[V(RW)T1(n)(T1-T2)] x 106, with T1 & T2 being 2 temperatures, and n from 0 to
255.
7. Measured with wiper at tap position 255, RL grounded, using test circuit.
8. tWC is the minimum cycle time to be allowed for any nonvolatile write by the user, unless Acknowledge Polling is used. It is the time from a valid
STOP condition at the end of a write sequence of a 2-wire interface write operation, or from the rising edge of CS of a valid “Store” operation of
the Up/Down interface, to the end of the self-timed internal nonvolatile write cycle.
9. The recommended power up sequence is to apply VCC/VSS first, then the potentiometer voltages. During power up, the data sheet parameters
for the DCP do not fully apply until tD after VCC reaches its final value. In order to prevent unwanted tap position changes, or an inadvertant
store, bring the CS pin high before or concurrently with the VCC pin on power up.
CS
SCL
U/D
RW
tCI
tIL
tIH
tCYC
tID
tDI
tIW
MI
(3)
tIC
tCPHS
tF
tR
10%
90%
tCPHNS
DS0, DS1
High-Voltage Write Cycle Timing
SYMBOL
PARAMETER
TYP
MAX
UNITS
tWC
(Notes 5, 8)
Non-volatile write cycle time
5
10
ms
XDCP Timing
SYMBOL
PARAMETER
MIN
MAX
UNITS
tWRL (Note 5) SCL rising edge to wiper code changed, wiper response time after instruction
issued (all load instructions)
520
s
X9252
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