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WM8321 数据表(PDF) 9 Page - Wolfson Microelectronics plc

部件名 WM8321
功能描述  Processor Power Management Subsystem
PDF  253 Pages
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制造商  WOLFSON [Wolfson Microelectronics plc]
网页  http://www.wolfsonmicro.com
标志 WOLFSON - Wolfson Microelectronics plc

WM8321 数据表(HTML) 9 Page - Wolfson Microelectronics plc

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Production Data
WM8321
w
PD, February 2012, Rev 4.0
9
3
PIN DESCRIPTION
Notes:
1.
Pins are sorted by functional groups.
2.
The power domain associated with each pin is noted; VPMIC is the domain powered by LDO12 for the ‘always-on’
functions internal to the WM8321.
3.
Note that an external level-shifter may be required when interfacing between different power domains.
PIN
NAME
TYPE
POWER
DOMAIN
DESCRIPTION
Clocking and Real Time Clock
Y12
XTO
Analogue Output
VPMIC
Crystal Drive Output
Y11
XTI
Analogue Input
Crystal Drive Input or 32.768kHz CMOS Clock Input
W11
XOSCGND
Supply
Crystal Oscillator Ground
H1
CLKOUT
Digital Output
DBVDD
CMOS Clock Output
Configurable Open Drain / CMOS mode. (External
4.7kΩ pull-up recommended in Open Drain mode.)
General Purpose Input / Output and Auxiliary ADC
D3
GPIO1
Digital I/O
DBVDD or
VPMIC
GPIO Pin 1
Selectable pull-up/pull-down.
F2
GPIO2
Digital I/O
GPIO Pin 2
Selectable pull-up/pull-down.
F3
GPIO3
Digital I/O
GPIO Pin 3
Selectable pull-up/pull-down.
W4
GPIO4
Digital I/O
DBVDD or
PVDD
GPIO Pin 4
Selectable pull-up/pull-down.
Y4
GPIO5
Digital I/O
GPIO Pin 5
Selectable pull-up/pull-down.
W5
GPIO6
Digital I/O
GPIO Pin 6
Selectable pull-up/pull-down.
H2
GPIO7
Digital I/O
DBVDD or
VPMIC
GPIO Pin 7
Selectable pull-up/pull-down.
H3
GPIO8
Digital I/O
GPIO Pin 8
Selectable pull-up/pull-down.
K3
GPIO9
Digital I/O
GPIO Pin 9
Selectable pull-up/pull-down.
Y5
GPIO10
Digital I/O
DBVDD or
PVDD
GPIO Pin 10 / Auxiliary ADC input
Selectable GPIO pull-up/pull-down.
Y6
GPIO11
Digital I/O
GPIO Pin 11 / Auxiliary ADC input
Selectable GPIO pull-up/pull-down.
W6
GPIO12
Digital I/O
GPIO Pin 12 / Auxiliary ADC input
Selectable GPIO pull-up/pull-down.



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