Non-intrusive in-system programming using in-system programming

Details Non-intrusive in-system programming using in-system programming Non-intrusive in-system programming using in-system programming

1997-12-12

2000-02-01

Lee, Thomas C.

Electrical computers and digital data processing systems: input/

Input/output data processing

Peripheral configuration

710 14, 712 32, 712 37, 712 43, G06F 104, G06F 1576

Patent

active

060214473

ABSTRACT:
A method and apparatus for In-System Programming which overcomes the above-described disadvantages. The method and apparatus of the ISP system interfaces with the two oscillator (instead of I/O) pins on the microcontroller. By interfacing with the two oscillator pins, the need for extra isolation circuitry to isolate other circuits from the ISP circuits is avoided in most circumstances, without incurring the expense of an expensive JTAG tester or extra dedicated pins. The amount of isolation circuitry necessary is reduced because the two oscillator pins are usually connected to passive components (registers, capacitors, or crystals) which cannot be damaged by the relatively high programming voltages and which do not produce signals that would interfere with the ISP programming signals.

REFERENCES:
patent: 4646280 (1987-02-01), Toyosawa
patent: 4727514 (1988-02-01), Bhuva et al.
patent: 5157781 (1992-10-01), Harwood et al.
patent: 5278759 (1994-01-01), Berra et al.
patent: 5473758 (1995-12-01), Allen et al.
patent: 5686844 (1997-11-01), Hull et al.
patent: 5724009 (1998-03-01), Collins et al.
patent: 5748981 (1998-05-01), Patchen et al.
patent: 5790833 (1998-08-01), Gulick et al.
patent: 5841996 (1998-11-01), Nolan et al.
patent: 5864486 (1999-01-01), Deming et al.

Affiliated with

Also associated with

Rating

Non-intrusive in-system programming using in-system programming does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Non-intrusive in-system programming using in-system programming , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-intrusive in-system programming using in-system programming will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-945889