EM78M612中文资料USB MCU数据手册Elan规格书

描述 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, theseseries of microcontrollers can automatically identify and decode Standard USBCommand to EndPoint Zero.
The EM78M612 is implemented on a RISC architecture. It has five-level stack andeight interrupt sources. The amount of General purpose Input/Output pins is up to 15.Each device has 112 bytes SRAM and is embedded with 4 bytes of E2PROM. TheROM size of the EM78M612 is 2K.
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 widthWidth Modulation that can generate a duty-cycle-programmable signalAD converter with up to 10 bits resolution.

特性 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 2 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
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:
   - Power-down mode (SLEEP mode)
   - 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 2048*13 bits Program ROM
* Built-in 112 bytes general purpose registers (SRAM)
* Built-in USB Application FIFOs.
* Built-in 4 bytes E2PROM (EM78M612 x B, EM78M612 x 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 of PWM duty cycles.
* Up to 8 selections of PWM frequency.
Built-in 15-Channel Analog-to-Digital Converter (ADC)
* Built-in AD Converter with 10-bit resolution
* 4 ADC conversion rates: 20K/10K/5K/2.5K
Built-in 3.3V Voltage Regulator
* For MCU power supply
* Pull-up source for the external USB resistor on D-pin.
Package Type
* 16 pin PDIP 300mil EM78M612 (A/D) AP
* 16 pin SOP 150mil EM78M612 (A/D) AM
* 18 pin PDIP/SOP 300mil (EM78M612(A/D) B P/M)
* 20 pin PDIP/SOP 300mil (EM78M612(A/D) C P/M)
* 20 pin SSOP 150mil EM78M612 (A/D) GM
* 24 pin PDIP/SOP 300mil (EM78M612(A/D) D K/M)
* 24 pin PDIP 600mil EM78M612 (A/D) DP
* 24 pin SSOP 150mil EM78M612 (A/D) HM
* 32 pin QFN 5*5*0.8mm EM78M612 (A/D) AW