Datasheet

Figure 7-2. Using a Crystal as the Hibernation Clock Source with a Single Battery Source
Open drain
external wake
up circuit
3V
Battery
GND
C
2
C
1
X
1
VBAT
EN
Input
Voltage
Regulator
or Switch
XOSC1
XOSC0
VDD
HIB
WAKE
OUTIN
R
PU
GNDX
R
BAT
C
BAT
Tiva™ Microcontroller
Note: Some devices may not supply the GNDX signal. See “Signal Tables” on page 2034 for pins specific
to your device.
X
1
= Crystal frequency is f
XOSC_XTAL
.
C
1,2
= Capacitor value derived from crystal vendor load capacitance specifications.
R
PU
= Pull-up resistor is 200 kΩ
R
BAT
= 51Ω ±5%
C
BAT
= 0.1µF ±20%
See “Hibernation Clock Source Specifications” on page 2117 for specific parameter values.
Figure 7-3. Using a Dedicated Oscillator as the Hibernation Clock Source with VDD3ON Mode
Open drain
external wake
up circuit
GND
Input
Voltage
Regulator
Clock
Source
(f
EXT_OSC
)
N.C.
XOSC1
XOSC0
VDD
HIB
WAKE VBAT
OUT
IN
R
PU
GNDX
3V
Battery
R
BAT
C
BAT
Tiva™ Microcontroller
Note: Some devices may not supply a GNDX signal. See “Signal Tables” on page 2034 for pins specific to
your device.
R
PU
= Pull-up resistor is 1 MΩ
R
BAT
= 51Ω ±5%
C
BAT
= 0.1µF ±20%
567December 13, 2013
Texas Instruments-Advance Information
Tiva
™
TM4C129XNCZAD Microcontroller