LM3S8971 Luminary Micro, Inc, LM3S8971 Datasheet - Page 559

• Manufacturer Part Number: LM3S8971
• Description: Lm3s8971 Arm Microcontroller
• Manufacturer: Luminary Micro, Inc

23.1.3
23.1.4
July 26, 2008
a. V
On-Chip Low Drop-Out (LDO) Regulator Characteristics
Table 23-3. LDO Regulator Characteristics
Power Specifications
The power measurements specified in the tables that follow are run on the core processor using
SRAM with the following specifications (except as noted):
■
■
■
■
■
■
■
■
■
Parameter
Parameter
V
V
LDOOUT
C
V
V
V
V
OL
t
V
V
V
V
V
Temperature = 25°C
Clock Source (MOSC) =3.579545 MHz Crystal Oscillator
Main oscillator (MOSC) = enabled
Internal oscillator (IOSC) = disabled
t
I
PON
t
I
OFF
STEP
OH
OL
OH
ON
LDO
SIH
OL
SIL
DD
DD25
BAT
DDA
DDPHY
and V
a
a
= 3.3 V
= 3.0 V
= 3.3 V
= 2.50 V
Parameter Name
High-level input voltage for Schmitt trigger inputs
Low-level input voltage for Schmitt trigger inputs
High-level output voltage
Low-level output voltage
High-level source current, V
Low-level sink current, V
OH
Parameter Name
Programmable internal (logic) power supply output value
Output voltage accuracy
Power-on time
Time on
Time off
Step programming incremental voltage
External filter capacitor size for internal power supply
= 3.3 V
shift to 1.2 V when using high-current GPIOs.
OL
=0.4 V
OH
=2.4 V
Preliminary
2-mA Drive
4-mA Drive
8-mA Drive
2-mA Drive
4-mA Drive
8-mA Drive
0.8 * V
Min
2.4
2.0
4.0
8.0
2.0
4.0
8.0
0
-
DD
2.25
Min
1.0
-
-
-
-
-
Nom
-
-
-
-
-
-
-
-
-
-
Nom
2.5
2%
50
-
-
-
-
0.2 * V
Max
2.75
100
200
100
Max
3.0
V
0.4
-
-
DD
-
-
-
-
-
-
-
DD
Unit
mV
µs
µs
µs
µF
%
V
LM3S8971 Microcontroller
mA
mA
mA
mA
mA
mA
Unit
V
V
V
V
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