|
|
PDF EM78612 Data sheet ( Hoja de datos )
| Número de pieza | EM78612 | |
| Descripción | Universal Serial Bus Microcontroller | |
| Fabricantes | ELAN Microelectronics | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de EM78612 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
|
No Preview Available !
EM78612
Universal Serial
Bus Microcontroller
Product
Specification
DOC. VERSION 1.4
ELAN MICROELECTRONICS CORP.
November 2011
1 page  
EM78612
Universal Serial Bus Microcontroller
1 General Description
The EM78612 is a series of 8-bit Universal Serial Bus (USB), RISC architecture
microcontroller. 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.
The EM78612 has 5-level stacks and 6 interrupt sources. It has a maximum of 12
General Input/Output pins. Each device has 80 bytes SRAM. The ROM capacity of the
EM78612 is 2K.
These series of ICs have Dual Clock mode which allows the device to run on low power
saving frequency.
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
• Supports 1 device address and 2 endpoints (EP0 and EP1)
USB Application
• USB protocol handling
• USB device state handling
• Identifies and decodes Standard USB commands to EndPoint Zero
PS/2 Application Support
• Built-in PS/2 port interface
Built-in 8-bit RISC MCU
• 5-level stacks for subroutine and interrupt
• 6 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 power saving methods:
1. Power-down mode (Sleep mode)
2. Low frequency mode
• Two clocks per instruction cycle
I/O Ports
Product Specification (V1.4) 11.23.2011
(This specification is subject to change without further notice)
•1
5 Page 
EM78612
Universal Serial Bus Microcontroller
at R2, while the one MSB Bit 10, is located at R3 [5].The Program Counter is cleared
after Power-on reset or Watchdog reset. The first instruction that is executed after a
reset is located at Address 00h.
R3 07 06 05 04 03 02 01 00
CALL
R2 10 09 08 07 06 05 04 03 02 01 00
PAGE0 0
PAGE1 1
0000 ~ 03FF
0400 ~ 07FF
RET
RETL
RETI
Stack1
Stack2
Stack3
Stack4
Stack5
E
Figure 6-3 The Structure of ROM Page
R3 (Status Register) Default Value:(0B_0001_1000)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
- - PS0 T P Z
Bit 1
DC
Bit 0
C
R3 [0] Carry / Borrow flag. For ADD, SUB Instructions
0: No carry-out from the Most Significant bit of the result occurred
1: A carry-out from the Most Significant bit of the result occurred
NOTE
For Borrow, the polarity is reversed. For rotate (RRC, RLC) instructions, this
bit is loaded with either the high or low-order bit of the source register.
R3 [1] Auxiliary carry / borrow flag. For ADD, SUB Instructions
0: No carry-out from the 4th low-order bit of the result
1: A carry-out from the 4th low-order bit of the result occurred
NOTE
For Borrow, the polarity is reversed.
R3 [2] Zero flag. It will be set to 1 when the result of an arithmetic or logic operation is
zero.
R3 [3] Power down flag. It will be set to 1 during Power-on phase or by “WDTC”
command and cleared when the MCU enters into Power down mode. It remains
in previous state after Watchdog Reset.
0: Power down
1: Power-on
Product Specification (V1.4) 11.23.2011
(This specification is subject to change without further notice)
•7
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet EM78612.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| EM78611 | Universal Serial Bus Series Microcontroller | ELAN Microelectronics |
| EM78611E | Universal Serial Bus Series Microcontroller | ELAN Microelectronics |
| EM78612 | Universal Serial Bus Microcontroller | ELAN Microelectronics |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |