Data Sheet ADuCRF101
GENERAL DESCRIPTION
The ADuCRF101 is a fully integrated, data acquisition solution
that is designed for low power, wireless applications. It features
a 12-bit analog-to-digital converter (ADC), a low power ARM®
Cortex®-M3 processor, a 862 MHz to 928 MHz and 431 MHz
to 464 MHz RF transceiver, and Flash®/EE memory. The
ADuCRF101 is packaged in a 9 mm × 9 mm LFCSP.
The data acquisition section consists of a 12-bit SAR ADC.
The six inputs can be configured in single-ended or differential
mode. When configured in single-ended mode, they can be
used for ratiometric measurements on sensors that are powered,
when required, from the internal low dropout regulator (LDO).
An internal battery monitor channel and an on-chip tempera-
ture sensor are also available.
This wireless data acquisition system is designed to operate in
battery-powered applications where low power is critical. The
device can be configured in normal operating mode or different
low power modes under direct program control. In flexi mode,
any peripheral can wake up the device and operate it. In hibernate
mode, the internal wake-up timer remains active. In shutdown
mode, only an external interrupt can wake up the device.
The ADuCRF101 integrates a low power ARM Cortex-M3
processor. It is a 32-bit RISC machine, offering up to 1.25 DMIPS
peak performance. The ARM Cortex-M3 processor also has a
flexible 14-channel direct memory access (DMA) controller that
supports communication peripherals, serial peripheral interface
(SPI), UART, and I
2
C. Also provided on chip are 128 kB of
nonvolatile Flash/EE memory and 16 kB of SRAM.
A 16 MHz on-chip oscillator generates the system clock. This
clock can be internally divided for the processor to operate at
a lower frequency, thus saving power. A low power, internal
32 kHz oscillator is available and can be used to clock the four
timers, as follows: two general-purpose timers, a wake-up timer,
and a system watchdog timer.
A range of communication peripherals can be configured, as
required, in a specific application. These peripherals include
UA RT, I
2
C, SPI, GPIO ports, PWM, and RF transceivers.
The RF transceiver communicates in the 862 MHz to 928 MHz
and 431 MHz to 464 MHz frequency bands using multiple
configurations.
On-chip factory firmware supports in-circuit serial download
via the UART, and nonintrusive emulation and program download
are also supported via the serial wire interface. These features
are incorporated into a low cost development system supporting
this precision analog microcontroller family.
The ADuCRF101 operates from 2.2 V to 3.6 V and is specified
over an industrial temperature range of −40°C to +85°C. It is
available in a 64-lead LFCSP package.
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