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| M052LDN Datasheet, PDF (26/86 Pages) List of Unclassifed Manufacturers – 32-bit Microcontroller | |||
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M051 DN/DE
6.2.3 System Power Architecture
In this chip, the power distribution is divided into two segments.
ï¬ Analog power from AVDD and AVSS provides the power for analog components
operation. AVDD must be equal to VDD to avoid leakage current.
ï¬ Digital power from VDD and VSS supplies the power to the I/O pins and internal
regulator which provides a fixed 1.8 V power for digital operation.
The output of internal voltage regulator, LDO_CAP, requires an external capacitor which should
be located close to the corresponding pin. Analog power (AVDD) should be the same voltage level
as the digital power (VDD). The following figure shows the power distribution of the NuMicro® M051
DN/DE series.
AVDD
AVSS
12-bit
SAR-ADC
Analog Comparator
Low
Voltage
Reset
Brown
Out
Detector
Temperature
Sensor
FLASH
Digital Logic
Internal
22.1184 MHz and
10 kHz Oscillator
1.8V
POR18
PLL
5V to 1.8V
LDO
IO cell
POR50
LDO_CAP
1uF
GPIO Pins
PVSS
M051 Series Power Distribution
VDD VSS
Figure 6-2 NuMicro® M051 DN/DE Series Power Architecture Diagram
Oct. 05, 2015
Page 26 of 86
Rev 1.03
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