公开(公告)号：WO1993010492A1

公开(公告)日：1993-05-27

申请号：PCT/US1992009464

申请日：1992-11-12

Applicant: MICROCHIP TECHNOLOGY INC.

Inventor： MICROCHIP TECHNOLOGY INC. ,  CHEN, Chao-Wu ,  ROSENHAGEN, Kurt ,  ITALIANO, Greg ,  MITRA, Sumit

IPC: G06F09/06

CPC classification number: G06F9/24 ,  G06F9/445

Abstract: A microcontroller (10) fabricated on a semiconductor chip is adapted, when operating, to execute programs (17) and instructions and, in response, to generate control signals to selectively control external apparatus. A clock (15) generates timing signals to control the timing of the microcontroller execution and operation. An on-chip program memory (17) has space available 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.

Abstract translation: 制造在半导体芯片上的微控制器（10）在操作时适于执行程序（17）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（15）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（17）具有可用于在程序存储器的连续地址位置中按顺序存储要由微控制器执行的程序的空间。 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，并使程序由微控制器执行 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。

公开(公告)号：WO1993010493A1

公开(公告)日：1993-05-27

申请号：PCT/US1992009463

申请日：1992-11-12

Applicant: MICROCHIP TECHNOLOGY INC.

Inventor： MICROCHIP TECHNOLOGY INC. ,  YACH, Randy, L. ,  MITRA, Sumit

IPC: G06F11/00

CPC classification number: G06F1/24 ,  G06F11/221

Abstract: A microcontroller (10) is adapted, when operating, to execute programs and instructions and, in response, to generate control signals to selectively control external apparatus. The microcontroller (10) includes a power supply (70, 85) for supplying power to the overall device within a predetermined range suitable for its operation, and a clock for supplying a clock frequency to the microcontroller with a stability suitable for precise timing and counting within the device. The microcontroller (10) is selectively reset to prevent it from executing programs and instructions for purposes of generating the control signals, and is maintained in the reset condition despite initiation of a removal from the reset condition, until the power supplied by the power supply (70, 85) is in a predetermined range and the clock frequency supplied by the clock is stable.

Abstract translation: 微控制器（10）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。 微控制器（10）包括用于在适合于其操作的预定范围内向整个装置供电的电源（70,85）和用于向微控制器提供时钟频率的时钟，其具有适于精确定时和计数的稳定性 在设备内。 微控制器（10）被选择性地复位以防止它执行用于产生控制信号的程序和指令，并且尽管开始从复位状态移除直到电源提供的电力 70,85）处于预定范围，并且由时钟提供的时钟频率是稳定的。

公开(公告)号：WO1993010501A1

公开(公告)日：1993-05-27

申请号：PCT/US1992009466

申请日：1992-11-12

Applicant: MICROCHIP TECHNOLOGY INC.

Inventor： MICROCHIP TECHNOLOGY INC. ,  BERMAN, Eric ,  ITALIANO, Greg ,  PADGAONKAR, Ajay ,  ALLEN, Ray

IPC: G06F15/20

CPC classification number: G06F9/30145 ,  G06F9/30167 ,  G06F11/2236 ,  G06F11/261 ,  G06F15/7814

Abstract: A microcontroller (10) fabricated on a semiconductor chip has an on-chip EPROM program memory (17) with programmable EPROM configuration fuses located in a limited number of addresses (32) of the on-chip EPROM program memory, the condition of each of EPROM fuses being defined as blown or not blown according to the value of the bit stored in the respective address on the on-chip EPROM 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 on-chip EPROM 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 EPROM fuses, and the latches are precluded from further emulating the EPROM fuses.

Abstract translation: 制造在半导体芯片上的微控制器（10）具有片上EPROM程序存储器（17），其具有位于片上EPROM程序存储器的有限数量的地址（32）中的可编程EPROM配置熔丝，每个 根据存储在片上EPROM程序存储器的相应地址中的位的值，EPROM保险丝被定义为被烧断或不被吹送。 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。 通过使用片上EPROM程序存储器外的锁存器来模拟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，可以实现至少一些操作模式下的微控制器的测试。 完成测试后，微控制器的工作模式的控制返回到EPROM保险丝，锁存器不再进一步仿真EPROM保险丝。

公开(公告)号：WO1993010498A1

公开(公告)日：1993-05-27

申请号：PCT/US1992009465

申请日：1992-11-12

Applicant: MICROCHIP TECHNOLOGY INC.

Inventor： MICROCHIP TECHNOLOGY INC. ,  BURGHARDT, Martin ,  BERMAN, Eric ,  PADGAONKAR, Ajay ,  ALLEN, Ray

IPC: G06F12/14

CPC classification number: G06F12/1433

Abstract: A microcontroller fabricated on a semiconductor chip has an on-chip EPROM program memory. The microcontroller operates in any one plurality of operating modes, including a secure microcontroller mode. A plurality of EPROM configuration fuses are mapped into the on-chip EPROM program memory as bits in respective address locations for configuring and protecting the microcontroller program memory from read, verify or write instructions initiated from other than a secure area of the chip. The value of a bit representing one of said fuses reflects the condition of the respective fuse. That condition is observed by reading the value of the respective bit for that fuse stored in the EPROM program memory. The chip security is enabled by configuring the microcontroller in a code protected mode by programming the bits representing the desired fuses in the EPROM program memory to blow or erase each fuse according to the desired configuration.

Abstract translation: 在半导体芯片上制造的微控制器具有片上EPROM程序存储器。 微控制器以任何多种操作模式工作，包括安全的微控制器模式。 多个EPROM配置熔丝被映射到片上EPROM程序存储器中，作为用于配置和保护微控制器程序存储器的读取，验证或写入从芯片的安全区域以外的指令发起的相应地址位置中的位。 代表所述保险丝之一的位的值反映了各个保险丝的状态。 通过读取存储在EPROM程序存储器中的该熔丝的相应位的值来观察该条件。 通过在EPROM程序存储器中编程表示所需保险丝的位来根据所需的配置对每个保险丝进行烧断或擦除，通过将代码保护模式下的微控制器配置为使能芯片的安全性。