th July 2011 11 www.semtech.com SX8654/SX8655/SX8656 H" />
參數(shù)資料
型號: SX8655IWLTRT
廠商: Semtech
文件頁數(shù): 3/62頁
文件大小: 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: SX8655IWLDKR
ADVANCED COMMUNICATIONS & SENSING
Rev 1 – 25
th July 2011
11
www.semtech.com
SX8654/SX8655/SX8656
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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