首页- 新闻中心- 正文

EM78447S芯片解密

来源:芯片解密-龙芯世纪   时间:2010-06-30   阅读:1114

EM78447S 芯片解密是龙芯世纪在 研究中成功破解的典型芯片型号,针对该芯片,我们解密周 期短、价格低、可靠性强。这里,我们将针对EM78447S芯片的主要技术特征做简单介绍,这里我们仅提供对EM78447S芯片的主要 功能特征介绍,供客户及各类芯片解密工程师与电子工程师参考借鉴,有芯片解密,ic解密 需求者请直接与我们联系咨询。
 
下面是关于EM78447S芯片的主要性能特征介绍,我们提供给广大客户及其他各类技术工程师参考借鉴。
EM78447S is an 8-bit microprocessor with low-power and high-speed CMOS technology. Integrated into a single chip are on-chip watchdog timer (WDT), RAM, ROM, real time clock/counter, external and interrupt, power down mode, and tri-state I/O.
EM78447S  FEATURES
Operating voltage range: 2.3V~5.5V.
Operating in temperature range: 0°C~70°C.
Operating frequency range ( base on 2 clocks)
* Crystal mode: DC~20MHz at 5V, DC~8MHz at 3V, DC~4MHz at 2.3V.
* RC mode: DC~4MHz at 5V, DC~4MHz at 3V, DC~4MHz at 2.3V.
Low power consumption:
* Less then 2.2 mA at 5V/4MHz
* Typically 30 mA at 3V/32KHz
* Typically 1 mA during sleep mode
4K ? 13 bits on chip ROM
One configuration register to accommodate user’s requirements
148? 8 bits on chip registers (SRAM, general purpose register)
3 bi-directional I/O ports
5 level stacks for subroutine nesting
8-bit real time clock/counter (TCC) with selective signal sources, trigger edges, and overflow interrupt
Two clocks per instruction cycle
Power down (SLEEP) mode
Two available interruptions
* TCC overflow interrupt
* External interrupt
Programmable free running watchdog timer
10 programmable pull-high pins
2 programmable open-drain pins
2 programmable R-option pins
Package types:
* 28 pin DIP 600mil :EM78447SAP
* 28 pin SOP(SOIC) 300mil :EM78447SAM
* 28 pin SSOP 209mil :EM78447SAS
* 32 pin DIP 300mil :EM78447SBP
* 32 pin SOP(SOIC) 450mil :EM78447SBWM
99.9% single instruction cycle commands
The transient point of system frequency between HXT and LXT is around 400KHz
 
更多芯片解密ic解密资料请留意http://www.icinf.com