PORTABLE ELECTRONIC DEVICE AND VOLTAGE CONVERTING CIRCUIT THEREOF
First Claim
Patent Images
1. A voltage converting circuit, comprising:
- a first port connected to a read/write control terminal of a central processing unit (CPU) through a 1-wire bus;
a second port connected to a signal terminal of a battery through a 1-wire bus, the battery comprising an erasable programmable read-only memory (EPROM) connected to the signal terminal of the battery;
a first power terminal connected to a first power supply that provides a first voltage about equal to a working voltage of the CPU;
a second power terminal connected to a second power supply that provides a second voltage about equal to a working voltage of the EPROM.
1 Assignment
0 Petitions
Accused Products
Abstract
A portable electronic device includes a battery, a central processing unit (CPU), and voltage converting circuit. The battery includes an erasable programmable read-only memory (EPROM) and a signal terminal connected to the EPROM. The CPU includes a read/write control terminal. The voltage converting circuit includes a first power terminal connected to a first power supply, a second power terminal connected to a second power supply, a first port connected to the read/write control terminal through a 1-wire bus, and a second port connected to the signal terminal.
-
Citations
18 Claims
-
1. A voltage converting circuit, comprising:
- a first port connected to a read/write control terminal of a central processing unit (CPU) through a 1-wire bus;
a second port connected to a signal terminal of a battery through a 1-wire bus, the battery comprising an erasable programmable read-only memory (EPROM) connected to the signal terminal of the battery;a first power terminal connected to a first power supply that provides a first voltage about equal to a working voltage of the CPU;
a second power terminal connected to a second power supply that provides a second voltage about equal to a working voltage of the EPROM. - View Dependent Claims (2, 3, 4, 5, 6)
- a first port connected to a read/write control terminal of a central processing unit (CPU) through a 1-wire bus;
-
7. A portable electronic device, comprising:
-
a battery comprising an erasable programmable read-only memory (EPROM) and a signal terminal connected to the EPROM; a central processing unit (CPU) comprising a read/write control terminal; and a voltage converting circuit, comprising; a first port connected to the read/write control terminal through a 1-wire bus; a second port connected to the signal terminal through a 1-wire bus; a first power terminal connected to a first power supply that provides a first voltage about equal to a working voltage of the CPU; a second power terminal connected to a second power supply that provides a second voltage about equal to a working voltage of the EPROM; wherein when the CPU execute a read operation to the EPROM, the voltage converting circuit converts a voltage of a signal output by the EPROM into a voltage that can be identified by the CPU;
when the CPU execute a write operation to the EPROM, the voltage converting circuit converts a voltage of a signal output by the CPU into a voltage that can be identified by the EPROM. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
Specification