EMC EM78612 Manuale Utente Scaricare il pdf (Pagina 2)

EM78612

Universal Serial Bus Microcontroller Series

This specification may change without further notice. 2 3/5/2003 (V1.0)

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Built-in 8-bit RISC MCU

 5 level stacks for subroutine and interrupt

 6 available interrupts

 8-bit real time clock/counter (TCC) with overflow interrupt

 Built-in RC oscillator free running for WatchDog Timer and Dual clock mode

 Two independent programmable prescalers for WDT and TCC

 Two methods of power saving:

1. Power-down mode (SLEEP mode)

2. Low frequency mode.

 Two clocks per instruction cycle

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I/O Ports

 Up to 12 general purposes I/O pins grouped into two ports (Port 6 and 7).

 Up to 2 LED sink pins

 Each GPIO pin of Ports 6 & Port 7 has an internal programmable pull-high resistor

(200K Ohms)

 Each GPIO pin wakes up the MCU from sleep mode by input state change

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Internal Memory

 Built-in 2048K*13 bits MASK ROM

 Built-in 80 bytes general purpose registers (SRAM)

 Built-in USB Application FIFOs.

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Operation Frequency

 Normal Mode: MCU runs on the external oscillator frequency

 Dual Clock Mode: MCU runs at the frequency of 256KHz (or 32KHz, 4KHz, 500Hz),

emitted by the internal oscillator with the external ceramic resonator (or crystal)

turned off to save power.

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Built-in 3.3V Voltage Regulator

 For MCU power supply

 Pull-up source for the external USB resistor on D-pin.

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Package Type

 16 pin PDIP/SOP

 18 pin PDIP/SOP

 20 pin PDIP/SOP

 20 pin SSOP

1 2 3 4 5 6 7 ... 28 29

EM78612 1
R3 (Status Register) 7

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