UPMU-M3L1xLCD-B-EK Silicon Labs, UPMU-M3L1xLCD-B-EK Datasheet - Page 37

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UPMU-M3L1xLCD-B-EK

Manufacturer Part Number
UPMU-M3L1xLCD-B-EK
Description
Daughter Cards & OEM Boards UDP SiM3L1xx MCU Card (with LCD)
Manufacturer
Silicon Labs
Datasheet

Specifications of UPMU-M3L1xLCD-B-EK

Product
MCU Cards
Core
ARM Cortex M3
Data Bus Width
32 bit
Description/function
MCU Card (with Static LCD) to use with UDP Motherboard
Interface Type
I2C, SPI, UART
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Tool Is For Evaluation Of
SiM3L1xx
For Use With
SiM3L1xx
4.1.6. Process/Voltage/Temperature Monitor (TIMER2 and PVTOSC0)
The Process/Voltage/Temperature monitor consists of two modules (TIMER2 and PVTOSC0) designed to monitor
the digital circuit performance of the SiM3L1xx device.
The PVT oscillator (PVTOSC0) consists of two oscillators, one operating from the memory LDO and one operating
from the digital LDO. These oscillators have two independent speed options and provide the clocks for two 16-bit
timers in the TIMER2 module using the EX input. By monitoring the resulting counts of the TIMER2 timers,
firmware can monitor the current device performance and increase the scalable LDO regulator (LDO0) output
voltages as needed or decrease the output voltages to save power.
The PVT monitor has the following features:



Two separate oscillators and timers for the memory and digital logic voltage domains.
Two oscillator output divider settings.
Provides a method for monitoring digital performance to allow firmware to adjust the scalable LDO
regulator output voltages to the lowest level possible, saving power.
Rev 0.5
SiM3L1xx
37

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