TY - GEN
T1 - Hardware/firmware co-design in an 8-bits microcontroller to solve the system-level ESD issue on keyboard
AU - Ker, Ming-Dou
AU - Sung, Yu Yu
PY - 1999/9/28
Y1 - 1999/9/28
N2 - A hardware/firmware co-design solution in an 8-bits microcontroller has been proposed to practically fix the system-level ESD (electrostatic discharge) issue on the keyboard products. By including the especial ESD sensors and an additional ESD flag into the chip, the fast electrical transient due to the system-level ESD zapping on the keyboard can be detected. The firmware stored in the ROM of the 8-bits microcontroller is designed to automatically check the ESD flag to monitor the abnormal conditions in system operations. If the keyboard is upset or locked up by a system-level ESD transient, the microcontroller can be quickly recovered to a known and stable state. The 8-bits microcontroller with such a hardware/firmware co-design solution has been fabricated in a 0.45-μm CMOS process. The system-level ESD susceptibility of the keyboard with this 8-bits microcontroller has been improved from the original 2 kV (4 kV) to become greater than 8 kV (15 kV) in the contact-discharge (air-discharge) ESD zapping.
AB - A hardware/firmware co-design solution in an 8-bits microcontroller has been proposed to practically fix the system-level ESD (electrostatic discharge) issue on the keyboard products. By including the especial ESD sensors and an additional ESD flag into the chip, the fast electrical transient due to the system-level ESD zapping on the keyboard can be detected. The firmware stored in the ROM of the 8-bits microcontroller is designed to automatically check the ESD flag to monitor the abnormal conditions in system operations. If the keyboard is upset or locked up by a system-level ESD transient, the microcontroller can be quickly recovered to a known and stable state. The 8-bits microcontroller with such a hardware/firmware co-design solution has been fabricated in a 0.45-μm CMOS process. The system-level ESD susceptibility of the keyboard with this 8-bits microcontroller has been improved from the original 2 kV (4 kV) to become greater than 8 kV (15 kV) in the contact-discharge (air-discharge) ESD zapping.
UR - http://www.scopus.com/inward/record.url?scp=0033279560&partnerID=8YFLogxK
U2 - 10.1109/EOSESD.1999.819083
DO - 10.1109/EOSESD.1999.819083
M3 - Conference contribution
AN - SCOPUS:0033279560
SN - 158537007X
T3 - Electrical Overstress/Electrostatic Discharge Symposium Proceedings
SP - 352
EP - 360
BT - Electrical Overstress/Electrostatic Discharge Symposium Proceedings
PB - ESD Assoc
T2 - Proceedings of the 1999 EOS/ESD Symposium 'Electrical Overstress/Electrostatic Discharge'
Y2 - 28 September 1999 through 30 September 1999
ER -