EM78612
Universal Serial Bus Microcontroller
Product Specification (V1.0)03.2 2.2006 •
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(This specification is subject to change without further notice)
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Up to 12 general purposes I/O pins grouped into two p orts (Port 6 and 7).
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Up to 2 LED sink pins
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Each GPIO pin of Ports 6 & Port 7 has an internal programmab le pull-high
resistor
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Each GPIO pin of Ports 6 has an internal programmable pull- low resistor
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Each GPIO pin wakes up the MCU from sleep mode by i nput state change
Internal Memory
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Built-in 2048*13 bits MASK ROM
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Built-in 80 bytes general purpose registers (SRAM)
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Built-in USB Application FIFOs.
Operation Frequency
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Normal Mode: MCU runs on the external oscillator frequenc y
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Dual Clock Mode: MCU runs at the frequency of 256 KH z (or 32KHz, 4KHz,
500Hz), emitted by the internal oscillator with the external ceramic resonator
turned off to save power.
Built-in 3.3V Voltage Regulator
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For MCU power supply
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Pull-up source for the external USB resistor on D-pin.
Package Type
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16 pin PDIP(300MIL) / SOP(150MIL) (EM78612 AP / AM)
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18 pin PDIP(300MIL) / SOP(300MIL) (EM78612 BP / BM)
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20 pin PDIP(300MIL) / SOP(300MIL) (EM78612 CP / CM)
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20 pin SSOP(209MIL) (EM78612 FM)
3 Applications
This microcontroller is des igned for USB low speed device application or non-USB
embedded device. It is also suitable for PS/2 mouse application.