Microchip Announces the PIC12LF1840T48A

Published:2011/11/28 21:34:00 Author:Phyllis From:SeekIC

Microchip Technology’s PIC12LF1840T48A is the first single-chip devices that integrate an eXtreme Low Power (XLP), 8-bit PIC® microcontroller with a sub-GHz RF transmitter.

The transmitter is suitable for operation in the 418, 434 and 868 MHz license-free ISM bands. The modulation is On/Off Keying or Frequency-Shift Keying. The PIC12LF1840T48A is available in a 14-pin TSSOP package, and volume production is expected in January of 2012.

The PIC12LF1840T48A is well suited for use in space-, power- and cost-constrained applications such as remote keyless entry fobs for automobiles, garage doors and home security systems, as well as a range of other home and building automation systems.

The PIC12LF1840T48A family contains an enhanced mid-range 8-bit CPU core which has 49 instructions. Interrupt capability includes automatic context saving and the hardware stack is 16 levels deep and has Overflow and Underflow Reset capability.

The RF transmitter integrated into the PIC12LF1840T48A has two main functioning modes. One called Preset mode, allows the user to choose from two predefined modes of operation. The setting is done by either pulling the CTRL line low or high. One connection to the DATA line is required to send modulation data to the transmitter. If one of the pre-defined configurations is used, then there is no need to use an extra I/O pin to control the CTRL line of the transmitter. This pin must be either pulled high, or pulled low.

Another operation mode is called advanced mode. This mode is useful when the user needs a custom configuration that cannot be satisfied using one the two preset modes. This custom configuration can include custom settings, such as different transmitting frequency, RF output power, transmit power-off timer, fine tuning of the transmitting center frequency, different modulation format, and frequency deviation.

Microchip Technology Incorporated engages in the design, development, manufacture, and market of semiconductor products for embedded control applications. Its product portfolio includes microcontrollers and analog and interface products. It also licenses flash intellectual property solutions, and provides assembly and test services for semiconductor manufacturers. The company serves automotive, communications, computing, consumer, and industrial control markets.

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