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ADUCM322I Datasheet(PDF) 3 Page - Analog Devices

Part # ADUCM322I
Description  general-purpose timers
Download  23 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADUCM322I Datasheet(HTML) 3 Page - Analog Devices

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Data Sheet
Rev. 0 | Page 3 of 23
The ADuCM322i is a fully integrated, single package device
that incorporates high performance analog peripherals together
with digital peripherals controlled by an 80 MHz ARM®
Cortex™-M3 processor and integral flash for code and data.
The ADC on the ADuCM322i provides 12-bit, 1 MSPS data
acquisition on up to 16 input balls. Additionally, chip temperature
and supply voltages can be measured.
The ADC input voltage range is 0 V to VREF. A sequencer is
provided, which allows a user to select a set of ADC channels to
measure in sequence without software involvement during the
sequence. The sequence can optionally repeat automatically at a
user selectable rate. Up to eight VDACs are provided with
output ranges that are programmable to one of two voltage
The ADuCM322i can be configured so that the digital and
analog outputs retain their output voltages through a watchdog
or software reset sequence. Thus, a product can remain
functional even while the ADuCM322i is resetting itself.
The ADuCM322i has a low power ARM Cortex-M3 processor
and a 32-bit RISC machine that offers up to 100 MIPS peak
performance. Also integrated on-chip are 2 × 128 kB Flash/EE
memory blocks and 32 kB of SRAM. The flash comprises two
separate 128 kB blocks supporting execution from one flash
block and simultaneous writing/erasing of the other flash block.
The ADuCM322i operates from an on-chip oscillator or a 16 MHz
external crystal and a PLL at 80 MHz. This clock can optionally
be divided down to reduce current consumption. Additional low
power modes can be set via software. In normal operating mode,
the ADuCM322i digital core consumes about 300 µA per MHz.
The device includes an MDIO interface capable of operating at
up to 4 MHz. The capability to simultaneously execute from
one flash block and write/erase the other flash block makes the
ADuCM322i ideal for 10G, 40G, and 100G optical applications.
The nonerasable kernel code plus flags in user flash provide
assistance by allowing user code to robustly switch between the
two blocks of user flash code and data spaces.
The ADuCM322i integrates a range of on-chip peripherals that
can be configured under software control, as required in the
application. These peripherals include 1 × UART, 2 × I2C, and 2 ×
SPI serial input/output communication controllers, GPIO,
32-element PLA, three general-purpose timers, plus a wake-up
timer and system watchdog timer. A
16-bit PWM with seven output channels is also provided.
GPIO balls on the device power up in high impedance input
mode. In output mode, the software chooses between open-
drain mode and push-pull mode. The pull-up resistors can be
disabled and enabled in software. In GPIO output mode, the
inputs can remain enabled to monitor the balls. The GPIO balls
can also be programmed to handle digital or analog peripheral
signals; in such cases, the ball characteristics are matched to the
specific requirement.
A large support ecosystem is available for the ARM Cortex-M3
processor to ease product development of the ADuCM322i.
Access is via the ARM serial wire debug port (SW-DP). On-
chip factory firmware supports in-circuit serial download via
I2C. These features are incorporated into a QuickStart™
development system, supporting this precision analog
microcontroller family.

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