th July 2011 10 www.semtech.com SX8657/SX8658 Haptics " />
參數(shù)資料
型號： SX8658IWLTRT
廠商： Semtech
文件頁數(shù)： 2/61頁
文件大?。?/td> 0K
描述： IC TOUCH SCREEN 12BIT 20QFN
標(biāo)準(zhǔn)包裝： 1
類型： 電阻式，觸感驅(qū)動器
觸摸面板接口： 4，5 線
輸入數(shù)/鍵： 1 TSC，雨刷，鑰匙
分辨率（位）： 12 b
評估套件： *
數(shù)據(jù)接口： I²C，串行
電壓基準(zhǔn)： 內(nèi)部
電源電壓： 2.3 V ~ 3.6 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 20-WFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝： 20-QFN（4x4）
包裝： 標(biāo)準(zhǔn)包裝
其它名稱： SX8658IWLDKR
ADVANCED COMMUNICATIONS & SENSING
Rev 1 – 25
th July 2011
10
www.semtech.com
SX8657/SX8658
Haptics Enabled 4/5-Wire
Resistive Touchscreen Controller with Proximity Sensing
Symbol
Description
Conditions
Min
Typ.
Max
Unit
Reset
VPOR
Power-On-Reset voltage
Cf. §10
-
1.3
-
V
tRESET
Reset time after POR
Cf. §10
-
1
ms
tPULSE
Reset pulse from host uC
Cf. §10
1
-
us
I2C Interface
fSCL
SCL clock frequency
-
400
kHz
tHD;STA
Hold time (repeated) START
condition
-
0.6
-
s
tLOW
LOW period of the SCL clock
-
1.3
-
s
tHIGH
HIGH period of the SCL clock
-
0.6
-
s
tSU;STA
Set-up time for a repeated
START condition
-
0.6
-
s
tHD;DAT
Data hold time
-
0
-
s
tSU;DAT
Data set-up time
-
100
-
ns
tr
Rise time of both SDA and SCL
-
20+0.1Cb
-
300
ns
tf
Fall time of both SDA and SCL
-
20+0.1Cb
-
300
ns
tSU;STO
Set-up time for STOP condition
-
0.6
-
s
tBUF
Bus free time between a STOP
and START condition
-
1.3
-
s
Cb
Capacitive load for each bus line
-
400
pF
tSP
Pulse width of spikes
suppressed by the input filter
Up to 0.3xVDD from
GND, down to 0.7xVDD
from VDD
50
-
ns
Miscellaneous
FOSCL
Low frequency internal oscillator
-
32
-
kHz
FOSCH
High frequency internal oscillator
-
1.8
-
MHz
(1)
Guaranteed by design.
(2)
PWM mode can introduce an additional error of 2.5% of full scale.
Table 4 – Electrical Specifications
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