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WM8993 bảng dữ liệu(PDF) 159 Page - Wolfson Microelectronics plc

tên linh kiện WM8993
Giải thích chi tiết về linh kiện  Audio Hub CODEC for Multimedia Phones
PDF  229 Pages
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nhà sản xuất  WOLFSON [Wolfson Microelectronics plc]
Trang chủ  http://www.wolfsonmicro.com
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WM8993 bảng dữ liệu(HTML) 159 Page - Wolfson Microelectronics plc

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Production Data
WM8993
w
PD, November 2010, Rev 4.0
159
reached their respective power on thresholds, POR
¯¯¯ is released high, all registers are in their default
state, and writes to the control interface may take place.
Note that a minimum power-on reset period, TPOR, applies even if AVDD1, AVDD2 and DCVDD have
zero rise time. (This specification is guaranteed by design rather than test.)
On power down, POR
¯¯¯ is asserted low when any of AVDD1, AVDD2 or DCVDD falls below their
respective power-down thresholds.
Typical Power-On Reset parameters for the WM8993 are defined in Table 109.
SYMBOL
DESCRIPTION
MIN
TYP
MAX
UNIT
Vpora_on
Power-On threshold (AVDD1 or AVDD2)
1.52
V
Vpora_off
Power-Off threshold (AVDD1 or AVDD2)
1.5
V
Vpord_on
Power-On threshold (DCVDD)
0.92
V
Vpord_off
Power-Off threshold (DCVDD)
0.9
V
TPOR
Minimum Power-On Reset period
100
ns
Table 109 Typical Power-On Reset parameters



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