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S87C552芯片解密

来源:芯片解密-龙芯世纪   时间:2010-07-06   阅读:1074

87C552 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S87C552芯片的主要技术特征做简单介绍,这里我们仅提供对S87C552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S87C552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。
S87C552 FEATURES:
80C51 central processing unit
8k × 8 ROM expandable externally to 64k
bytes
ROM code protection
An additional 16-bit timer/counter coupled
to four capture registers and three compare
registers
Two standard 16-bit timer/counters
256 × 8 RAM, expandable externally to 64k
bytes
Capable of producing eight synchronized,
timed outputs
A 10-bit ADC with eight multiplexed analog
inputs
Two 8-bit resolution, pulse width
modulation outputs
Five 8-bit I/O ports plus one 8-bit input port
shared with analog inputs
I2C-bus serial I/O port with byte oriented
master and slave functions
Full-duplex UART compatible with the
standard 80C51
On-chip watchdog timer
Three speed ranges:
– 3.5 to 16MHz
– 3.5 to 24MHz (ROM, ROMless only)
– 3.5 to 30MHz (ROM, ROMless only)
Three operating ambient temperature
ranges:
– P83C552xBx: 0°C to +70°C
– P83C552xFx: –40°C to +85°C
(XTAL frequency max. 24 MHz)
– P83C552xHx: –40°C to +125°C
(XTAL frequency max. 16 MHz)

 

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