參數(shù)資料
型號： OM13005,598
廠商： NXP Semiconductors
文件頁數(shù)： 29/51頁
文件大?。?/td> 0K
描述： BOARD EVAL EM773 METER US PLUG
其它有關(guān)文件： EM773 Energy Metering IC Training
設(shè)計資源： Plug Meter Schematics, Gerber Files
USB Dongle Schematics, Gerber Files
標(biāo)準(zhǔn)包裝： 1
主要目的： 電源管理，電度表/功率表
嵌入式： 是，MCU，32 位
已用 IC / 零件： EM773FHN33，551
已供物品： 板
相關(guān)產(chǎn)品： 568-5213-ND - IC ENERGY METER ARM 32VQFN
其它名稱： 568-6680
EM773
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2012. All rights reserved.
Product data sheet
Rev. 2 — 3 January 2012
35 of 51
NXP Semiconductors
EM773
Energy metering IC
10.4 Internal oscillators
[1]
Parameters are valid over operating temperature range unless otherwise specified.
[2]
Typical ratings are not guaranteed. The values listed are at room temperature (25
C), nominal supply
voltages.
[1]
Typical ratings are not guaranteed. The values listed are at room temperature (25
C), nominal supply
voltages.
[2]
The typical frequency spread over processing and temperature (Tamb = 40 C to +85 C) is 40 %.
[3]
See the EM773 user manual.
Table 10.
Dynamic characteristic: internal oscillators
Tamb = 40 C to +85 C; 2.7 V VDD 3.6 V.[1]
Symbol
Parameter
Conditions
Min
Typ[2]
Max
Unit
fosc(RC)
internal RC oscillator frequency -
11.88
12
12.12
MHz
Conditions: Frequency values are typical values. 12 MHz
1 % accuracy is guaranteed for
2.7 V
V
DD 3.6 V and Tamb = 40 C to +85 C. Variations between parts may cause the IRC to
fall outside the 12 MHz
1 % accuracy specification for voltages below 2.7 V.
Fig 18. Internal RC oscillator frequency versus temperature
Table 11.
Dynamic characteristics: Watchdog oscillator
Symbol Parameter
Conditions
Min
Max
Unit
fosc(int)
internal oscillator
frequency
DIVSEL = 0x1F, FREQSEL = 0x1
in the WDTOSCCTRL register;
-
kHz
DIVSEL = 0x00, FREQSEL = 0xF
in the WDTOSCCTRL register
1700
-
kHz
002aaf403
11.95
12.05
12.15
f
(MHz)
11.85
temperature (
°C)
40
85
35
10
60
15
VDD = 3.6 V
3.3 V
3.0 V
2.7 V
2.4 V
2.0 V
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