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PDF EM78P611G Data sheet ( Hoja de datos )
| Número de pieza | EM78P611G | |
| Descripción | Universal Serial Bus Series Microcontroller | |
| Fabricantes | ELAN Microelectronics | |
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EM78P611G
Universal Serial Bus
Series Microcontrollers
Product
Specification
DOC. VERSION 1.3
ELAN MICROELECTRONICS CORP.
December 2011
1 page  
EM78P611G
Universal Serial Bus Series Microcontrollers
1 General Description
The EM78P611G is a series of One-Time Programmable (OTP) microcontrollers
equipped with 8-bit Universal Serial Bus RISC architecture. It is specifically designed
for USB low speed device applications and supports standard devices, such as PS/2
keyboards. It also supports one device address and three endpoints USB device
communications. With no firmware involved, these microcontrollers can automatically
identify and decode Standard USB Command to Endpoint Zero.
The microcontroller has 8-level stacks and 6 interrupt sources with 144 bytes of
General Purpose SRAM and 6K words of OTP ROM. It runs with either an external
ceramic resonator with a 6 or 12 MHz or internal high frequency oscillator (IRC) by
setting Code Option 11.
2 Features
Operating voltage: 4.0V ~ 5.5V
All GPIO are 5V
Low-cost solution for low-speed USB devices, such as keyboard, 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
• Supports one device address and three endpoints
USB Application
• P75 (D-) has an internal pull-high resistor (1.4 KΩ)
• USB protocol handling
• USB device state handling
• Identifying and decoding of Standard USB commands to EndPoint Zero
PS/2 Application Support
• Built-in PS/2 port interface for keyboard and mouse
Built-in 8-bit RISC MCU
• 8-level stacks for subroutine nesting and interrupt
• 8-bit real time clock/counter (TCC) with overflow interrupt
• Six available interrupts
• Built-in free running RC oscillator for Watchdog Timer and Dual Clock mode
• Two independent programmable prescalers for WDT and TCC
Product Specification (V1.3) 12.08.2011
(This specification is subject to change without further notice)
•1
5 Page 
EM78P611G
Universal Serial Bus Series Microcontrollers
Figure 7-2 EM78P611G Data RAM Organization
7.2.2 Operational Registers
The following subsections describe each of the Operational Registers of the Special
Purpose Registers. The Operational Registers are arranged according to the order of
the registers’ address. Note that some registers are read only, while others are both
readable and writable.
7.2.2.1 R0 (Indirect Addressing Register) Default Value: (0B_0000_0000)
R0 is not a physically implemented register. Its major function is to serve as an indirect
addressing pointer. Any instruction using R0 as a pointer actually accesses the data
pointed to by the RAM Select Register (R4).
Product Specification (V1.3) 12.08.2011
(This specification is subject to change without further notice)
•7
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet EM78P611G.PDF ] | |
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