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EM78M612

Features: `PS/2 Application Support`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` Suppo...

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SeekIC No. : 004336069 Detail

EM78M612: Features: `PS/2 Application Support`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...

EM78M612 Data Sheet

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Part Number:
EM78M612
Supply Ability:
5000

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  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

`PS/2 Application Support
`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 2 endpoints
*USB Application
*USB protocol 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
`Built-in 8-bit RISC MCU
*5 level stacks for subroutine and interrupt
*8 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
*Multi-time programmable
`I/O Ports
*Up to 15 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 has an internal programmable pull-high resistor (200K Ohms)
*Each GPIO pin wakes up the MCU from sleep mode by input state change
`Internal Memory
*Built-in 2048K*13 bits Program ROM
*Built-in 112 bytes general purpose registers (SRAM)
*Built-in USB Application FIFOs.
*Built-in 4 bytes E2PROM (EM78M612*B, EM78M612*D)
`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.
`Built-in Pattern Detecting Application for serial signal transmission
`Built-in Pulse Width Modulation (PWM)
*Up to 2 channels PWM function on P.64 (PWM1) and P.65 (PWM2).
*Up to 8-bit resolution PWM output
*Up to 8 selections of duty cycles
`Built-in 15-Channel Analog-to-Digital Converter (ADC)
`Built-in AD Converter with 10-bit resolution


Pinout

Connection Diagram


Specifications

Symbol
Min
Max
Unit
Temperature under bias
0
70
ºC
Storage temperature
-65
150
ºC
Input voltage
-0.5
6.0
V
Output voltage
-0.5
6.0
V



Description

The EM78M612 is a series of Universal Serial Bus 8-bit RISC Multi-Time Programming (MTP) microcontrollers. It is specifically designed for USB low speed device application and to support legacy device such as PS/2 mouse. The EM78M612 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 EM78M612 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 15. Each device has 112 bytes SRAM and is embedded with 4 bytes of E2PROM. The ROM size of the EM78M612 is 2K.

These EM78M612 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.




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