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WM8311 bảng dữ liệu(PDF) 28 Page - Wolfson Microelectronics plc

tên linh kiện WM8311
Giải thích chi tiết về linh kiện  Processor Power Management Subsystem
PDF  302 Pages
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nhà sản xuất  WOLFSON [Wolfson Microelectronics plc]
Trang chủ  http://www.wolfsonmicro.com
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WM8311 bảng dữ liệu(HTML) 28 Page - Wolfson Microelectronics plc

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WM8311
Pre-Production
w
PP, May 2012, Rev 3.1
28
7.12 TOUCH PANEL CONTROLLER
Unless otherwise noted: TJ = +25ºC
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Supply voltage
VSYSVDD
TPVDD connected to
LDO13VOUT
2.5
V
Input voltage range
VGPIO13, 14, 15, 16
VAUXADCIN4
0
VTPVDD
V
Programmable pull-up resistor
RPU
TCH_RPU = 0000
64
kΩ
TCH_RPU = 0111
8
TCH_RPU = 1111
4
Pen down detection threshold
VPDD_THR
TPVDD/
2
V
Pressure measurement current
(4-wire mode only)
ITCH_PRESS
TCH_ISEL = 0
200
A
TCH_ISEL = 1
400
Switch matrix internal
impedance
RTCH_SW
12
Ω
ADC Resolution
12
bits
ADC Conversion Time
(including default settling time)
TCH_DELAY = 010
160
s
ADC accuracy
-2.5
+2.5
%
7.13 SYSTEM STATUS LED DRIVERS
Unless otherwise noted: TJ = +25ºC
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
LED1 and LED2
Sink current
10
mA
7.14 CLOCKING
Unless otherwise noted: TJ = +25ºC
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
FLL input reference
32.768kHz
FLL_CLK_SRC=00
32.768
kHz
CLKIN
FLL_CLK_SRC=01
32
25000
kHz
FLL output frequency
CLKOUT
CLKOUT_SRC=0
32
25000
kHz



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