SIM3L144-C-GM Silicon Labs, SIM3L144-C-GM Datasheet - Page 37

• Manufacturer Part Number: SIM3L144-C-GM
• Description: ARM Microcontrollers - MCU 64KB, DC-DC, AES QFN40
• Manufacturer: Silicon Labs

Specifications of SIM3L144-C-GM

• Rohs: yes
• Core: ARM Cortex M3
• Processor Series: SiM3L1xx
• Data Bus Width: 32 bit
• Maximum Clock Frequency: 50 MHz
• Program Memory Size: 64 KB
• Data Ram Size: 16 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 1.8 V to 3.8 V
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: QFN-40
• Mounting Style: SMD/SMT
• A/d Bit Size: 12 bit
• A/d Channels Available: 20
• Interface Type: I2C, SPI
• Length: 4.65 mm
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 28
• Number Of Timers: 3
• On-chip Dac: Yes
• Program Memory Type: Flash
• Supply Voltage - Max: 3.8 V
• Supply Voltage - Min: 1.8 V

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:
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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