N32905U2DN datasheet(10/47 Pages) ETC2

10 / 47 page

N3290X DATASHEET

Nuvoton Technology Corp.

Release Date: May. 2013

http://www.nuvoton.com/

Rev. A5.1



A normal UART supported:



Baud rate is up to 115.2K bps



2 signals TX and RX supported only



SPI



One SPI controller is supported



Both master and slave mode are supported in SPI interface



Two chip selection signals for two SPI devices



I2C



One I2C channel supported



Compatible with Philips’s I2C standard and only master mode supported



Multi-master operation supported



Advanced Interrupt Controller



Total 32 interrupt source supported



Configurable interrupt type:



Low-active level triggered interrupt



High-active level triggered interrupt



Low-active edge (falling edge) triggered interrupt



High-active edge (rising edge) triggered interrupt



Individual interrupt mask bit for each interrupt source



8 different priority levels supported



Daisy-chain priority mechanism supported for interrupts with same priority level



Low priority interrupt automatic masking supported for interrupt nesting



RTC



Independent power plane supported



32.768 KHz crystal oscillation circuit supported



Time counter (second, minute, hour) and Calendar counter (day, month, year) supported



Alarm supported (second, minute, hour, day, month and year)



12/24-hour mode and Leap year supported



Alarm to wake chip up from Standby mode or from Power-down mode supported



Wake chip up from Power-down mode by input pin supported



Power-off chip by register setting supported



Power-on timeout is supported for low battery protection



GPIO



80 programmable general purpose I/Os supported and separated into 5 groups



Individual configuration supported for each I/O signal



Configurable interrupt control functions supported



Configurable de-bounce circuit supported for interrupt function



ADC



Multi-channel, 10-bit ADC supported



2 channels dedicated for 4-wire resistive touch sensor inputs



2 channels dedicated for Audio ADC with Microphone pre-Amp & AGC



3 channels reserved for various purposes, like LVD (Low Voltage Detection), keypad

input, and light sensor



Input voltage range from 0V ~ 3.3V supported

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