Integrated circuit device having data signal output at voltage level of the device coupled thereto
AssigneeNokia Corporation
InventorChristopher Atkinson
Life of this patent
Estimating the term…
Abstract
An integrated circuit device 1 such as a current sensor includes a circuit configuration 3 which is driven from supply rails (P1, P2) at a given operational voltage. The integrated circuit device 1 includes control circuitry (R1, T1) responsive to an enabling signal from a micro-controller 2 applied to pin P8 to ensure that data supplied at pin P7 to the micro-controller is at a voltage compatible with a running voltage of the micro-controller 2 that is different from that of the device 1. No pin to receive a rail voltage corresponding to the running voltage for the micro-controller 2 is needed for the integrated circuit device 1.
Claims16
An integrated circuit device comprising:
- a circuit configuration to be driven from supply rails at a given operational voltage, pins for connection to supply rails for the device to receive said operational voltage, a data pin to supply data to another device that may operate at a running voltage different from said operational voltage, an enable pin to receive an enabling signal from the other device at the running voltage thereof, the circuit configuration being enabled to supply data for the other device to the data pin in response to the enabling signal applied to the enable pin, and control circuitry responsive to the enabling signal to control the voltage of the data fed by the circuit configuration to the data pin at the voltage of the enable pin to be compatible with the running voltage of the other device.
An electrical circuit including an integrated circuit device, said integrated circuit device comprising:
- a circuit configuration to be driven from supply rails at a given operational voltage, pins for connection to supply rails for the device to receive said operational voltage, a data pin to supply data to another device that may operate at a running voltage different from said operational voltage, an enable pin to receive an enabling signal from said other device at the running voltage thereof, the circuit configuration being enabled to supply data for said other device to the data input in response to the enabling signal applied to the enable pin, and control circuitry responsive to the enabling signal to control the voltage of the data fed by the circuit configuration to the data pin at the voltage of the enable pin to be compatible with the running voltage of said other device, and said other device connected to said integrated circuit device.
An integrated circuit device comprising a circuit configuration to be driven from supply rails at a given operational voltage, external connections for receiving the operational voltage from the supply rails, an external data connection for supplying data to another device that may operate at a running voltage different from the operational voltage, and an enable connection to receive an enabling signal from the other device at the running voltage thereof, the circuit configuration being enabled for operation so as to supply data for the other device to the data connection selectively in response to the enabling signal being applied to the enable connection, wherein there is no external connection to receive a continuous rail voltage corresponding to the running voltage from the other device, and the integrated circuit device includes control circuitry responsive to the enabling signal applied to the enable connection to control the voltage of data fed by the circuit configuration to the data connection to be compatible with the running voltage of the other device.
A portable electronic apparatus including an electrical circuit having an integrated circuit device wherein said integrated circuit device further comprises:
- a circuit configuration to be driven from supply rails at a given operational voltage, pins for connection to supply rails for the device to receive said operational voltage, a data pin to supply data to another device that may operate at a running voltage different from said operational voltage, an enable pin to receive an enabling signal from said other device at the running voltage thereof, the circuit configuration being enabled to supply data for said other device to the data pin in response to the enabling signal applied to the enable pin, and control circuitry responsive to the enabling signal to control the voltage of the data fed by the circuit configuration to the data pin at the voltage of the enable pin to be compatible with the running voltage of said other device, and said other device connected to said integrated circuit device.
Dependencies are inferred from the claim text.