EM77950 datasheet(10/102 Pages) EMC

10 / 102 page

EM77950

BB Controller

•

Product Specification (V1.0) 10.09.2007

(This specification is subject to change without further notice)

Power consumption:

< 4 mA @ 3.3V, 6 MHz

< 60

μA @ 3.0V, (RC = 32.768 kHz)

< 1

μA standby current

52/44-pin QFP package

2.2 Oscillators/System Clocks

Three oscillator options:

•

Crystal/Resonate oscillator of high frequency

•

PLL oscillator: 6MHz, 12 MHz, 24 MHz, and 48 MHz

(External crystal should be 6 MHz)

•

External RC oscillator

Three modes of system clocks:

•

Sleep mode

•

Green mode

•

Normal mode

Internal RC oscillator for Power-on Reset (POR) and Watchdog Timer (WDT)

2.3 Input and Output (I/O) Pins

40 I/O pins max.

Pull-up resistor options

Key Wake-up function

Open drain output options

2.4 Timers and Counters

Programmable 8-bit real Time Clock/Counter (TCC) with prescaler and overflow

interrupt

16-bit Free Run Counter (FRC) with overflow interrupt

2.5 Interrupt Sources and Features

Hardware priority check

Different interrupt vectors

Interrupts

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Key Wake-up function

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External pin interrupt

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16-bit Free Run Counter Overflow

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TCC (time-base) overflow;

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Read Buffer Full Interrupt in Serial Peripheral Interface (SPI)

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An analog to digital converting (ADC) complete

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One period of Pulse Width Modulation (PWM) complete

EM77950 Datasheet(PDF) 10 Page - ELAN Microelectronics Corp

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