LM3S1150-IQC50-A1 Luminary Micro, Inc., LM3S1150-IQC50-A1 Datasheet - Page 442

• Manufacturer Part Number: LM3S1150-IQC50-A1
• Description: Microcontroller
• Manufacturer: Luminary Micro, Inc.

Electrical Characteristics
21.2.5
442
b. Because I2CSCL and I2CSDA are open-drain-type outputs, which the controller can only actively drive Low, the time
c. Specified at a nominal 50 pF load.
Figure 21-2. I
Hibernation Module
The Hibernation Module requires special system implementation considerations since it is intended
to power-down all other sections of its host device. The system power-supply distribution and
interfaces of the system must be driven to 0 V
by HIB.
The regulators controlled by HIB are expected to have a settling time of 250 μs or less.
Table 21-11. Hibernation Module Characteristics
a. This parameter is highly sensitive to PCB layout and trace lengths, which may make this parameter time longer. Care
Figure 21-3. Hibernation Module Timing
Parameter No
32.768 KHz
(internal)
period. The actual position is affected by the value programmed into the TPR; however, the numbers given in the above
values are minimum values.
I2CSCL or I2CSDA takes to reach a high level depends on external signal capacitance and pull-up resistor values.
must be taken in PCB design to minimize trace lengths and RLC (resistance, inductance, capacitance).
/WAKE
H1
H2
H3
H4
H5
H6
I2CSDA
I2CSCL
/HIB
t
t
HIB_REG_WRITE
2
t
WAKE_ASSERT
XOSC_SETTLE
Luminary Micro Confidential-Advance Product Information
Parameter
t
C Timing
I1
WAKETOHIB
t
t
HIB_HIGH
HIB_LOW
H1
Internal 32.768 KHz clock reference rising edge to /HIB asserted
Internal 32.768 KHz clock reference rising edge to /HIB deasserted
/WAKE assertion time
/WAKE assert to /HIB desassert
XOSC settling time
Time for a write to non-volatile registers in HIB module to complete
I2
I4
a
DC
Parameter Name
I6
or powered down with the same regulator controlled
I7
H3
H4
I5
I8
H2
I3
Min
62
62
20
92
-
-
Nom
June 14, 2007
200
30
-
-
-
-
Max
124
I9
-
-
-
-
-
Unit
ms
μs
μs
μs
μs
μs