| CPC H03H 9/13 (2013.01) [G06F 1/08 (2013.01); G06F 1/14 (2013.01); H03B 5/32 (2013.01); H03H 9/17 (2013.01)] | 6 Claims |
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1. A real-time clock device comprising:
a resonator;
an oscillation circuit that oscillates the resonator;
a clocking circuit that performs clocking based on a signal from the oscillation circuit and generates clocking information;
a functional circuit that performs information processing based on the clocking information;
a package that houses the resonator, the oscillation circuit, the clocking circuit, and the functional circuit, the package being substantially quadrangular-prism-shaped, the package having a bottom outer surface having a first side, a second side, a third side, and a fourth side, the first and second sides extending in a first direction, the third and fourth sides extending in a second direction perpendicular to the first direction, the first, second, third and fourth sides defining four corners of the bottom outer surface;
external terminals that are formed on the bottom outer surface of the package, five terminals of the external terminals being arranged side by side along each of the first side and the second side, the external terminals including an outer terminal group and an inner terminal group, the outer terminal group being arranged along each of the third and fourth sides or either of the third side or the fourth side, the inner terminal group being away from each of the third and fourth sides, wherein
the inner terminal group includes:
a high-potential power supply terminal coupled to a high-potential power supply;
a low-potential power supply terminal coupled to a low-potential power supply; and
a clocking signal terminal used at least for controlling the clocking circuit; and
the outer terminal group includes a functional signal terminal used for controlling the functional circuit; and
a switching circuit selectively electrically coupling the functional terminals to the functional circuit, wherein
the functional signal terminal is located at a first corner of the four corners of the bottom outer surface of the package, and the first corner has a configuration in which a tip of the first corner is cut off such that the first corner is configured with three lines,
edges of the functional signal terminal align with the cut-off tip of the first corner and the first and third sides of the bottom outer surface of the package,
a first width in the first direction of each terminal of the outer terminal group is larger than a second width in the first direction of each terminal of the inner terminal group, and
a terminal of the inner terminal group has a notch at a position on either of the first side or the second side of the bottom outer surface of the package.
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