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Page 2

Contents

1.

Product Characteristics .........................................................................................1

2.

Product Information ...............................................................................................5

3.

Pin Information........................................................................................................6

Pin Distribution..........................................................................................................6

Pin Function Description...........................................................................................7

4.

Function Description............................................................................................10

System Architecture................................................................................................10

4.1.1. System block diagram ............................................................................................10

4.1.2. Address mapping.................................................................................................... 11

Core ........................................................................................................................12

Interrupt controller...................................................................................................12

4.3.1. Nested Vector Interrupt Controller (NVIC)..............................................................12

4.3.2. External interrupt controller (EINT).........................................................................12

Memory ...................................................................................................................12

Clock .......................................................................................................................13

4.5.1. Clock tree................................................................................................................14

Power management................................................................................................14

4.6.1. Power supply scheme.............................................................................................14

4.6.2. Power supply monitor .............................................................................................14

Low power consumption mode...............................................................................15

General purpose input/output port (GPIO) .............................................................15

Communication interface ........................................................................................16

4.9.1. Universal asynchronous transceiver (USART).......................................................16

4.9.2. I2C bus....................................................................................................................16

4.9.3. Serial peripheral interface (SPI) .............................................................................17

Analog/digital converter (ADC) ...............................................................................17

Timer .......................................................................................................................18

4.11.1.Advanced control timer (TMR1 and TMR1A) .........................................................18