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EMC EM78612 Bedienungsanleitung

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EM78612
Universal Serial Bus Microcontroller Series
This specification may change without further notice. 1 3/5/2003 (V1.0)
1 General Description
The EM78612 is a series of Universal Serial Bus 8-bit RISC Mask Rom microcontrollers. It is
specifically designed for USB low speed device application and to support legacy device
such as PS/2 mouse. The EM78612 also support one device address and two endpoints.
With no firmware involved, these series of microcontrollers can automatically identify and
decode Standard USB Command to EndPoint Zero.
The EM78612 is implemented on a RISC architecture. It has five-level stack and eight
interrupt sources. The amount of General Input/Output pins is up to 16. Each device has 112
bytes SRAM and is embedded with 4 bytes of E
2
PROM. The ROM size of the EM78612 is
12K.
These series of chips have special features that accommodate your needs. These features
are:
Dual Clock mode which allows the device to run on very low power saving frequency
Pattern Detecting Application function which is used in a serial transmission to count
waveform width
Width Modulation that can generate a duty-cycle-programmable signal
AD converter with up to 10 bits resolution.
2 Features
Low-cost solution for low-speed USB devices, such as mouse, joystick, and gamepad.
USB Specification Compliance
Universal Serial Bus Specification Version 1.1
USB Device Class Definition for Human Interface Device (HID), Firmware
Specification Version 1.1
Support 1 device address and 1 endpoints
USB Application
USB protocol handling
USB device state handling
Identifies and decodes Standard USB commands to EndPoint Zero
PS/2 Application Support
Auto-detects PS/2 or USB port
Built-in PS/2 port interface
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Inhaltsverzeichnis

Seite 1 - EM78612

EM78612 Universal Serial Bus Microcontroller Series This specification may change without further notice. 1 3/5/2003 (V1.

Seite 2

EM78612 Universal Serial Bus Microcontroller Series This specification may change without further notice. 10 3/5/2003 (V1

Seite 3

EM78612 Universal Serial Bus Microcontroller Series This specification may change without further notice. 11 3/5/2003 (V1

Seite 4

EM78612 Universal Serial Bus Microcontroller Series This specification may change without further notice. 12 3/5/2003 (V1

Seite 5

EM78612 Universal Serial Bus Microcontroller Series This specification may change without further notice. 13 3/5/2003 (V1

Seite 6

EM78612 Universal Serial Bus Microcontroller Series This specification may change without further notice. 14 3/5/2003 (V1

Seite 7 - R3 (Status Register)

EM78612 Universal Serial Bus Microcontroller Series This specification may change without further notice. 15 3/5/2003 (V1

Seite 8

EM78612 Universal Serial Bus Microcontroller Series This specification may change without further notice. 16 3/5/2003 (V1

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EM78612 Universal Serial Bus Microcontroller Series This specification may change without further notice. 18 3/5/2003 (V1

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EM78612 Universal Serial Bus Microcontroller Series This specification may change without further notice. 2 3/5/2003 (V1.

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EM78612 Universal Serial Bus Microcontroller Series This specification may change without further notice. 4 3/5/2003 (V1.

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EM78612 Universal Serial Bus Microcontroller Series This specification may change without further notice. 5 3/5/2003 (V1.

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EM78612 Universal Serial Bus Microcontroller Series 6 3/5/2003 (V1.0) This specification may change without further no

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EM78612 Universal Serial Bus Microcontroller Series This specification may change without further notice. 7 3/5/2003 (V1.

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EM78612 Universal Serial Bus Microcontroller Series 8 3/5/2003 (V1.0) This specification may change without further no

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EM78612 Universal Serial Bus Microcontroller Series This specification may change without further notice. 9 3/5/2003 (V1.

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