LM3S8971 Luminary Micro, Inc, LM3S8971 Datasheet - Page 65
LM3S8971
Manufacturer Part Number
LM3S8971
Description
Lm3s8971 Arm Microcontroller
Manufacturer
Luminary Micro, Inc
Datasheet
1.LM3S8971.pdf
(602 pages)
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6.1.3
July 26, 2008
The watchdog reset timing is shown in Figure 23-14 on page 571.
Power Control
The Stellaris
power to the majority of the controller's internal logic. The LDO regulator provides software a
mechanism to adjust the regulated value, in small increments (VSTEP), over the range of 2.25 V
to 2.75 V (inclusive)—or 2.5 V ± 10%. The adjustment is made by changing the value of the VADJ
field in the LDO Power Control (LDOPCTL) register. Figure 6-2 on page 66 shows the power
architecture.
Note:
On the printed circuit board, use the LDO output as the source of VDD25 input. In addition,
the LDO requires decoupling capacitors. See “On-Chip Low Drop-Out (LDO) Regulator
Characteristics” on page 559.
®
microcontroller provides an integrated LDO regulator that may be used to provide
Preliminary
LM3S8971 Microcontroller
65
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