Single-Chip Architecture Provides eXtreme Low Power MCU, 418/434/868 MHz RF Transmitter and KEELOQ Technology for a Broad Range of Remote-Access Applications
Microchip Technology Inc. announced the PIC12LF1840T48A—the first in a family of single-chip devices that integrate an eXtreme Low Power (XLP), 8-bit PIC microcontroller with a sub-GHz RF transmitter. The PIC12LF1840T48A’s combination of features in a single, 14-pin TSSOP package makes it ideal for space-, power- and cost-constrained applications, such as remote keyless entry fobs for automobiles, garage doors and home security systems, as well as a broad range of other home and building automation systems. Additionally, the device is optimized to run Microchip’s royalty-free KEELOQ advanced code-hopping technology, a proven security technology used worldwide by leading manufacturers.
In addition to being optimized for secure wireless communication, the PIC12LF1840T48A is designed to maximize battery life via an extremely low operating voltage of 1.8V. Furthermore, the XLP microcontroller has extremely low sleep current consumption, and is efficiently integrated with the transmitter to enable fast wake-up and send functionality that takes full advantage of the MCU’s 8 MIPS operation.
PIC12LF1840T48A Features:
- Enhanced Mid-range Core with 49 Instruction, 16 Stack Levels
- Flash Program Memory with self read/write capability
- Internal 32MHz oscillator
- Data Signal Modulator Module
- MI2C, SPI, EUSART w/auto baud
- ECCP (Enhanced/Capture Compare PWM) Module
- Comparator with selectable Voltage Reference
- 4 Channel 10b ADC with Voltage Reference
- 25mA Source/Sink current I/O
- Two 8-bit Timers (TMR0/TMR2)
- One 16-bit Timer (TMR1)
- Extended Watchdog Timer (EWDT)
- Enhanced Power-On/Off-Reset
- Brown-Out Reset (BOR)
- In Circuit Serial Programming (ICSP)
- On Board In-Circuit Debug
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RF Transmitter:
- Fully Integrated Transmitter
- FSK Operation up to 100 kbps
- OOK Operation up to 10 kbps
- Operation in 418, 434 and 868 MHz Bands: - 8 Selectable center frequencies
- +10 dBm or 0 dBm Configurable Output Power: - Up to 100 kbps bit rate in FSK, 10 kbps bit rate in OOK Low-Power Features:
- Standby Current: - 30 nA @ 3.0V, typical, RF off - 530 nA @ 3.0V, typical, RF Sleep
- Operating Current: - 0.67 mA @ 8 MHz, 3.0V, RF off, typical - 9.67 mA @ 8 MHz, 3.0V, RF on at 0 dBm, typical - 17.17 mA @ 8 MHz, 3.0V, RF on at 10 dBm, typical
- Low-Power Watchdog Timer Current: - 500 nA @ 3.0V, typical
Development Support
The AN1393 Using the PIC12LF1840T48A Microcontroller With Integrated Sub-GHz Transmitter application note is available for download today, to assist engineers in developing their remote-control designs.
Pricing & Availability
The PIC12LF1840T48A is available in a 14-pin TSSOP package, for $1.06 each in 10,000-unit quantities. Samples are available today, and volume production is expected in January.
