欢迎访问ic37.com |
会员登录 免费注册
发布采购

EM78808 参数 Datasheet PDF下载

EM78808图片预览
型号: EM78808
PDF下载: 下载PDF文件 查看货源
内容描述: [8-BITMICRO-CONTROLLER]
分类和应用:
文件页数/大小: 63 页 / 469 K
品牌: ELAN [ ELAN MICROELECTRONICS CORP ]
 浏览型号EM78808的Datasheet PDF文件第1页浏览型号EM78808的Datasheet PDF文件第2页浏览型号EM78808的Datasheet PDF文件第3页浏览型号EM78808的Datasheet PDF文件第5页浏览型号EM78808的Datasheet PDF文件第6页浏览型号EM78808的Datasheet PDF文件第7页浏览型号EM78808的Datasheet PDF文件第8页浏览型号EM78808的Datasheet PDF文件第9页  
EM78808  
8-bit Micro-controller  
I.General Description  
The EM78808 is an 8-bit CID (Call Identification) RISC type microprocessor with low power, high speed  
CMOS technology. Integrated onto a single chip are on chip watchdog (WDT), RAM, program ROM, data  
ROM, programmable real time clock/counter, external/internal interrupt, power down mode, LCD driver, FSK  
decoder, Call waiting decoder, Energy Detector (DED) , DTMF receiver, Programming Tone generator,  
build-in KEY TONE clock generation, Comparator and tri-state I/O. The EM78808 provides a single chip  
solution to design a CID of calling message display.  
II.Feature  
CPU  
Operating voltage range : 2.2V~5.5V(Normal mode), 2.0V~5.5V(Green mode)  
32K×13 on chip Program ROM  
256K×8 on chip data ROM (2.5V ~ 5.5V for main clock 3.5826MHz)  
8K×8 on chip data RAM  
144 byte working register  
Up to 51 bi-directional tri-state I/O ports (32 shared with LCD Segment pins)  
IO with internal Pull high, wake-up and interrupt functions  
STACK: 32 level stack for subroutine nesting  
TCC: 8-bit real time clock/counter (TCC) with 8-bit prescaler  
COUNTER1: 8-bit counter with 8-bit prescaler can be an interrupt source  
COUNTER2: 8-bit counter with 8-bit prescaler can be an interrupt source  
Watch Dog : Programmable free running on chip watchdog timer  
CPU modes:  
Mode  
Sleep mode  
Green mode  
CPU status  
Turn off  
Turn on  
Main clock  
Turn off  
Turn off  
Turn on  
32.768kHz clock status  
Turn off  
Turn on  
Normal mode Turn on  
Turn on  
13 interrupt source , 8 external , 5 internal  
Key Scan : Port key scan function up to 16x4 keys  
Sub-Clock: 32.768KHz crystal  
Main-clock: 3.5862MHz multiplied by 0.25, 0.5, 1 or 3 generated by internal PLL  
Key tone output :4KHz, 2KHz ,1KHz (shared with IO)  
Comparator: 3-channel comparators: internal (16 level) or external reference voltage. (shared with IO)  
Serial Peripheral Interface (SPI): Interrupt flag available for the read buffer full, Programmable baud rates of  
communication, Three-wire synchronous communication. (shared with IO)  
An OP inside (shared with IO)  
Current D/A  
Operation Voltage : 2.5V5.5V  
7-bit resolution and 3-bit output level control  
Current DA output can drive speaker through a transistor for sound playing. (shared with IO)  
Programmable Tone Generators  
Operation Voltage 2.2V5.5V  
Programmable Tone1 and Tone2 generators  
Independent single tone generation for Tone1 and Tone2  
Mixed dual tone generation by Tone1 and Tone2 with 2dB difference  
Can be programmed for DTMF tone generation  
Can be programmed for FSK signal (Bell202 or V.23) generation  
CID  
Operation Voltage 2.7V5.5V for FSK  
Operation Voltage 2.7V5.5V for DTMF receiver  
Compatible with Bellcore GR-30-CORE (formerly as TR-NWT-000030)  
Compatible with British Telecom (BT) SIN227 & SIN242  
______________________________________________________________________________________________________________________________________________________  
* This specification is subject to change without notice.  
8/1/2004 (V3.1)  
4