ULPMark™-PeripheralProfile

An EEMBC Benchmark

Overview

ULPMark-PP focuses on the MCU's commonly used peripherals like pulse-width modulation (PWM), analog-to-digital conversion (ADC), the serial peripheral interface (SPI), and a real-time clock (RTC). This benchmark defines ten one-second activity slots each with variable usage of ADC, SPI, PWM, RTC, allowing the MCU and peripherals to sleep after their activities have completed. The following table gives an overview of the activity in each slot. As soon as the device finishes the peripheral operation for that slot it can enter sleep. This means faster peripherals will most likely score higher since they can remain off longer.

Peripheral Profile Slot Descriptions

SlotADCPWMSPIRTC
1
# samples: 64
Conversion rate: 1 kHz
Freq: 32,786 Hz, period: 255
Duty: 10%, fixed
# pulses: 20
Setup & Start Timer
2
# samples: 64
Conversion rate: 1 kHz
Buffered evaluation
Freq: 32,786 Hz, period: 255
Duty: 20%, increase
# pulses: 40
3
# samples: 1
Conversion rate: 1 Hz
Freq: 32,786 Hz, period: 255
Duty: 30%, fixed
# pulses: 40
4
# samples: 1
Conversion rate: 1 Hz
Freq: 32,786 Hz, period: 255
Duty: 40%, fixed
# pulses: 100
Tx 128 B
5
# samples: 1
Conversion rate: 1 Hz
Freq: 32,786 Hz, period: 255
Duty: 50%, fixed
# pulses: 100
Check last Rx
Tx 128 B
6
# samples: 1
Conversion rate: 1 Hz
Freq: 32,786 Hz, period: 255
Duty: 60%, fixed
# pulses: 100
Check last Rx
Tx 128 B
7
# samples: 1
Conversion rate: 1 Hz
Freq: 32,786 Hz, period: 255
Duty: 70%, fixed
# pulses: 100
Check last Rx
Tx 128 B
8
# samples: 1
Conversion rate: 1 Hz
Freq: 32,786 Hz, period: 255
Duty: 80%, fixed
# pulses: 100
Check last Rx
Tx 128 B
9
# samples: 1
Conversion rate: 1 Hz
Freq: 1 MHz, period: 10,000
Duty: 10%, increase
# pulses: 30
Check last Rx
Tx 128 B
10
Off
Check slots' 3-9 data
Off
Check last Rx
Stop & check

Framework Update

ULPMark has been redesigned since it's first release in 2014. It now works with the EEMBC benchmark framework, the same one used by IoTMark and SecureMark, with a super-thin API that enables any MCU to execute next generation EEMBC benchmarks. The STMicroelectronics PowerShield provides the backbone of the framework's energy measurement, with sub-100nJ accuracy on your desktop for around US$100.

The framework used for ULPMark creates an extensible framework for probing an embedded system. Block diagram (left), actual implementation (right). Click to enlarge. Note that for ULPMark-CP and ULPMark-PP, the Radio Manager and IO Manager are not required.

Obtaining the Benchmark

In order to run the benchmark and submit scores, you must obtain a license. EEMBC is a US 501(c)6 non-profit, funded by membership dues and licensing fees. Please fill out an information request to obtain information on licensing.


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