HT32F2755 Просмотр технического описания (PDF) - Holtek Semiconductor
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HT32F2755 Datasheet PDF : 45 Pages
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32-bit ARM Cortex™-M3 MCU
HT32F1755/HT32F1765/HT32F2755
Power Management
▀ Single 3.3V power supply: 2.7V to 3.6V
▀ Integrated 1.8V LDO regulator for core and peripheral power supply
▀ VBAT battery power supply for RTC and backup registers
▀ Three power domains: 3.3V, 1.8V and Backup
▀ Four power saving modes: Sleep, Deep-Sleep1, Deep-Sleep2, Power-Down
The Power consumption can be regarded as one of the most important issues for many embedded
system applications. Accordingly the Power Control Unit, PWRCU, in these devices provides many
types of power saving modes such as Sleep, Deep-Sleep1, Deep-Sleep2 and Power-Down mode.
These operating modes reduce the power consumption and allow the application to achieve the best
trade-off between the conflicting demands of CPU operating time, speed and power consumption.
Analog to Digital Converter
▀ 12-bit SAR ADC engine
▀ Up to 1Msps conversion rate – 1μs at 56MHz, 1.17μs at 72MHz
▀ 8 external analog input channels
▀ Supply voltage range: 2.7V ~ 3.6V
▀ Conversion range: VREF+ ~ VREF-
A 12-bit multi-channel ADC is integrated in the device. There are a total of 10 multiplexed
channels, which include 8 external channels on which the external analog signals can be measured,
and 2 internal channels. If the input voltage is required to remain within a specific threshold
window, an Analog Watchdog function will monitor and detect these signals. An interrupt will
then be generated to inform the device that the input voltage is not within the preset threshold
levels. There are three conversion modes to convert an analog signal to digital data. The ADC can
be operated in one shot, continuous and discontinuous conversion modes.
Analog Operational Amplifier/Comparator
▀ Two Operational Amplifiers or Comparator functions which are software configurable
▀ Supply voltage range: 2.7V ~ 3.6V
Two Operational Amplifiers/Comparators (OPA/CMP) are implemented within the devices. They
can be configured either as Operational Amplifiers or as Analog Comparators. When configured as
comparators, they are capable of generating interrupts to the NVIC.
Rev. 1.00
9 of 45
August 13, 2012
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