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EM78M611E

The EM78M611E is an integrated USB MTP controller IC. It has a built-in USB transceiver, built-in 4-bit EEPROM, built-in PWM function and built-in AD converter. The EM78M611E can be a USB & PS/2 Keyboard & Mouse controller.

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The EM78M611E is an integrated USB MTP controller IC. It has a built-in USB transceiver, built-in 4-bit EEPROM, built-in PWM function and built-in AD converter. The EM78M611E can be a USB & PS/2 Keyboard & Mouse controller.

Features

Fully compliant with the Universal Serial Bus Specification, version 1.1
USB keyboard design is compliant with USB Device Class Definition for Human
Interface Device (HID), Firmware Specification, and version 1.1
Two 8-bit transmit FIFOs
One 8-bit bidirectional FIFO
6K x 13 on-chip Program ROM
144 bytes of General Purpose RAM
11 LED direct sink pins with internal serial resistor (P70-P72, P76-P77, P90-P93,
P95-P96)
Built-in 4-bit EEPROM with a minimum of 10K write/erase cycles (achieved by
F/W)
Built-in PWM (Pulse Width Modulation) function
Built-in 24 channels Analog-to-Digital converter with 10-bit resolution
8-level stack for subroutine nesting
RC Oscillator with internal RC
Ports 5, 6, 8, 9, P74~P77 with pull-up resistors
Wake-up pins in Ports 6, 9, P74~P77
Operates at 6MHz or 12MHz frequency
* 6MHz Frequency: 2.5V~5.5V
* 12MHz Frequency: 4.0V~5.5V only
Available in 40-pin DIP, 44-pin QFP, 20-pin PDIP/SOP/SSOP, 24-pin PDIP/SOP
Built-in 20MHz Low Pass Filter in Oscillator (maximum MCU frequency is 12MHz)

Applications

USB Keyboard only
Keyboard switch with USB or PS/2
USB keyboard with PS/2 mouse port
USB joystick

? ? ? 芯片資料下載:
? ? ?EM78M611E芯片手冊

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