CPC H03H 11/54 (2013.01) [H03H 11/28 (2013.01); H03K 19/0005 (2013.01); G11C 2207/2254 (2013.01)] | 18 Claims |
1. An apparatus, comprising:
a current source circuit configured to generate a reference current that is at a constant value for a predetermined temperature range;
a reference calibration circuit configured to generate a calibration current based on the reference current; and
a terminal calibration circuit for calibrating a data bus termination based on the calibration current,
wherein the reference calibration circuit includes a programmable resistance circuit and the reference calibration circuit is configured to program a resistance of the programmable resistance circuit using the reference current, and
wherein the calibration current is based on the resistance of the programmable resistance circuit.
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