EM773FHN33 NXP Semiconductors, EM773FHN33 Datasheet - Page 35

• Manufacturer Part Number: EM773FHN33
• Description: The EM773 is an ARM Cortex-M0 based, low-cost 32-bit energy metering IC, designed for 8/16-bit smart metering applications
• Manufacturer: NXP Semiconductors

NXP Semiconductors
EM773
Product data sheet
10.4 Internal oscillators
Table 10.
T
[1]
[2]
Table 11.
[1]
[2]
[3]
Symbol
f
Symbol Parameter
f
osc(RC)
osc(int)
amb
Fig 18. Internal RC oscillator frequency versus temperature
Parameters are valid over operating temperature range unless otherwise specified.
Typical ratings are not guaranteed. The values listed are at room temperature (25 C), nominal supply
voltages.
Typical ratings are not guaranteed. The values listed are at room temperature (25 C), nominal supply
voltages.
The typical frequency spread over processing and temperature (T
See the EM773 user manual.
= 40 C to +85 C; 2.7 V  V
(MHz)
12.15
12.05
11.95
11.85
f
internal oscillator
frequency
Conditions: Frequency values are typical values. 12 MHz  1 % accuracy is guaranteed for
2.7 V  V
fall outside the 12 MHz  1 % accuracy specification for voltages below 2.7 V.
Parameter
internal RC oscillator frequency -
−40
Dynamic characteristic: internal oscillators
Dynamic characteristics: Watchdog oscillator
All information provided in this document is subject to legal disclaimers.
DD
 3.6 V and T
VDD = 3.6 V
Rev. 2 — 3 January 2012
−15
3.3 V
3.0 V
2.7 V
2.4 V
2.0 V
Conditions
DIVSEL = 0x1F, FREQSEL = 0x1
in the WDTOSCCTRL register;
DIVSEL = 0x00, FREQSEL = 0xF
in the WDTOSCCTRL register
amb
DD
= 40 C to +85 C. Variations between parts may cause the IRC to
 3.6 V.
10
Conditions
[1]
35
Min
11.88
amb
[2][3]
[2][3]
= 40 C to +85 C) is 40 %.
Min
-
-
60
Typ
12
temperature (°C)
[2]
Energy metering IC
Typ
7.8
1700
© NXP B.V. 2012. All rights reserved.
002aaf403
[1]
Max
12.12
EM773
85
Max
-
-
35 of 51
Unit
MHz
Unit
kHz
kHz