龙芯世纪依靠成熟的解密方案和解密技术以及丰富的实际解密经验，将为您提供安全可靠、价格合理的优质解密服务。针对HD404889解密等日立HITACHI芯片解密，龙芯世纪IC解密中心早先就曾针对客户的解密需求进行过方案开发，在该系列芯片解密中的技术突破将为更多客户带来实实在在的利益。我们依靠技术攻关成果及丰富的解密实践经验，致力于为每一款芯片提供最具可靠性和经济价值的解密方案。
HD404889 Features
46 I/O pins (HD404889/HD404899/HD404878 Series)
41 I/O pins (HD404868 Series)
Large-current I/O pins (source: 10 mA max.):4
Large-current I/O pins (sink: 15 mA max.): 8 (HD404889/HD404899/HD404878 Series)
6 (HD404868 Series)
LCD segment multiplexed pins:16
Analog input multiplexed pins: 6 (HD404889 and HD404899 Series)
4 (HD404868 Series)
Four Timer/counters
8-bit timer: 2 (HD404889/HD404899/HD404878 Series)
1 (HD404868 Series)
16-bit timer:1 (Can also be used as two 8-bit timer)
8-bit input capture circuit (HD404889/HD404899/HD404878 Series)
Two timer outputs (including PWM out-put)
Two event counter inputs (edge-programmable) (HD404889/HD404899/HD404878 Series)
One event counter input (edge-programmable) (HD404868 Series)
Clock-synchronous 8-bit serial interface
A/D converter
6 channels × 8-bit (HD404889 Series)
6 channels × 10-bit (HD404899 Series)
4 channels × 10-bit (HD404868 Series)
LCD controller/driver (32 segments × 4 commons) (HD404889/HD404899/HD404878 Series)
(24 segments × 4 commons) (HD404868 Series)
On-chip oscillators
Main clock (ceramic resonator, crystal resonator, or external clock operation possible)
Sub-clock (32.768 kHz crystal resonator)
Interrupts
External: 3 (including one edge-programmable)
Internal : 6 (HD404889 and HD404899 Series)
: 5 (HD404878 and HD404868 Series)
Subroutine stack up to 16 levels, including interrupts
Four Low-power dissipation modes
Module standby (timers, serial interface, A/D converter)
System clock pision software switching (1/4 or 1/32)
Inputs for return from stop mode (wakeup): 4
Instruction execution time
Min. 0.89 μs (fOSC = 4.5 MHz)
Operation voltage
1.8 V to 5.5 V
以上我们仅针对HD404889单片机的主要性能特征进行了简单介绍，供大家参考借鉴，欲了解更多技术详情，如有HD404889芯片解密等日立HITACHI芯片解密芯片解密需求，欢迎与龙芯世纪商务中心联系。
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