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1. 发明授权

US5504903A Self-progamming of on-chip program memory for microcontroller at clock start-up 失效
标题翻译：在时钟启动时，用于微控制器的片上程序存储器的自动编程
公开(公告)号：US5504903A
公开(公告)日：1996-04-02
申请号：US192958
申请日：1994-02-07
申请人： Chao-Wu Chen , Kurt Rosenhagen , Greg Italiano , Sumit Mitra
发明人： Chao-Wu Chen , Kurt Rosenhagen , Greg Italiano , Sumit Mitra
IPC分类号： G06F9/24 , G06F9/445 , G06F9/06
CPC分类号： G06F9/24 , G06F9/445
摘要： A microcontroller fabricated on a semiconductor chip is adapted, when operating, to execute programs and instructions and, in response, to generate control signals to selectively control external apparatus. A clock generates timing signals to control the timing of the microcontroller execution and operation. An on-chip program memory has space avilable for storing a program to be executed by the microcontroller in sequential steps in successive address locations of the program memory. An instruction stored in unerasable memory on the chip initiates self-programming of the program memory with the program to be executed by the microcontroller by enabling a pointer timed by the clock to alternately read addresses containing steps of the program to be executed from off-chip memories and to write same into successive addresses of the on-chip program memory by incrementing the latter addresses with each step to be written therein.
摘要翻译：制造在半导体芯片上的微控制器在操作时适于执行程序和指令，并且作为响应，适于产生控制信号以选择性地控制外部设备。时钟产生定时信号以控制微控制器执行和操作的时序。片上程序存储器具有可用于存储由微控制器在程序存储器的连续地址位置中的连续步骤执行的程序的空间。存储在芯片上的不可擦除存储器中的指令通过使由时钟指针定时的指针交替地读取包含要从芯片外执行的程序的步骤的地址，从而启动程序存储器的自编程，并由要由微控制器执行的程序存储器，并且通过用要在其中写入的每个步骤递增后一个地址，将其写入片上程序存储器的连续地址。

2. 发明授权

US5455937A Microcontroller with fuse-emulating latches 失效
标题翻译：具有保险丝仿真锁存器的微控制器
公开(公告)号：US5455937A
公开(公告)日：1995-10-03
申请号：US268673
申请日：1994-06-30
申请人： Eric Berman , Greg Italiano , Ajay Padgaonkar , Ray Allen
发明人： Eric Berman , Greg Italiano , Ajay Padgaonkar , Ray Allen
IPC分类号： G06F9/30 , G06F9/38 , G06F11/26 , G06F11/267 , G06F15/78 , G11C7/00 , G01R31/28
CPC分类号： G06F9/30145 , G06F11/2236 , G06F11/261 , G06F15/7814 , G06F9/30167
摘要： A microcontroller fabricated on a semiconductor chip has an on-chip EPROM program memory with programmable EPROM configuration fuses located in a limited number of addresses of the on-chip program memory, the condition of each of EPROM fuse being defined as blown or not blown according to the value of the bit stored in the respective address of the on-chip program memory. The operating modes of the microcontroller are configurable by appropriately programming at least some of the EPROM fuses. Testing of the microcontroller in at least some of the operating modes is achieved by using latches outside the program memory to emulate the EPROM fuses, while suppressing the capability to set the condition of the EPROM fuses during the testing. Upon completion of the testing, control of the operating modes of the microcontroller is returned to the EPROM fuses, and the latches are precluded from further emulating the EPROM fuses.
摘要翻译：在半导体芯片上制造的微控制器具有片上EPROM程序存储器，其具有位于片上程序存储器的有限地址中的可编程EPROM配置熔丝，每个EPROM保险丝的条件被定义为被吹制或不被吹制到存储在片上程序存储器的相应地址中的位的值。微控制器的工作模式可以通过适当地编程至少一些EPROM保险丝进行配置。在至少一些操作模式下对微控制器的测试通过使用程序存储器外部的锁存器来模拟EPROM保险丝，同时抑制在测试期间设置EPROM保险丝的状态的能力来实现。完成测试后，控制微控制器的工作模式返回到EPROM保险丝，锁存器不再进一步仿真EPROM保险丝。

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