Self-progamming of on-chip program memory for microcontroller at

Details Self-progamming of on-chip program memory for microcontroller at Self-progamming of on-chip program memory for microcontroller at

1994-02-07

1996-04-02

Kim, Ken S.

Boots, shoes, and leggings

395500, 395800, 3642802, 364DIG1, G06F 906

Patent

active

055049036

ABSTRACT:
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.

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