M-Bus远程抄表系统（symphonicmbus），是欧洲标准的2线的二总线，主要用于消耗测量仪器诸如热表和水表系列。
doc file on AMBA...advanced microcontroller bus architecture ...basic og amba ahb, asb, apb
GPIO (General Purpose Input and Output ports) with microprocessor programmable tri-state bus interface
The Definitive Guide to SOA: Oracle® Service Bus, Second Edition targets professional software developers and archi...
The PCA9673 provides general purpose remote I/O expansion for most microcontrollerfamilies vi
The PCA9537 is a 10-pin CMOS device that provides 4 bits of General Purpose parallelInput/Out
The PCA9672 provides general purpose remote I/O expansion for most microcontrollerfamilies vi
The PCA9538 is a 16-pin CMOS device that provides 8 bits of General Purpose parallelInput/Out