Precision Analog Microcontroller, 12-Bit Analog
I/O, ARM7TDMI MCU with Enhanced IRQ Handler
Data Sheet
ADuC7023
FEATURES
APPLICATIONS
Analog I/O
Optical networking
Multichannel, 12-bit, 1 MSPS ADC
Up to 12 ADC channels
Fully differential and single-ended modes
0 V to VREF analog input range
12-bit voltage output DACs
4 DAC outputs available
On-chip voltage reference
On-chip temperature sensor
Voltage comparator
Microcontroller
Industrial control and automation systems
Smart sensors, precision instrumentation
Base station systems
GENERAL DESCRIPTION
The ADuC7023 is a fully integrated, 1 MSPS, 12-bit data
acquisition system, incorporating high performance multichannel
ADCs, 16-bit/32-bit MCUs, and Flash/EE memory on a single chip.
The ADC consists of up to 12 single-ended inputs. An additional four
inputs are available but are multiplexed with the four DAC output
pins. The ADC can operate in single-ended or differential input modes.
The ADC input voltage is 0 V to VREF. A low drift band gap reference,
temperature sensor, and voltage comparator complete the ADC
peripheral set.
ARM7TDMI core, 16-bit/32-bit RISC architecture
JTAG port supports code download and debug
Clocking options
Trimmed on-chip oscillator ( 3ꢀ%
External watch crystal
External clock source up to 44 MHz
41.78 MHz PLL with programmable divider
Memory
62 kB Flash/EE memory, 8 kB SRAM
In-circuit download, JTAG-based debug
Software-triggered in-circuit reprogrammability
Vectored interrupt controller for FIQ and IRQ
8 priority levels for each interrupt type
Interrupt on edge or level external pin inputs
On-chip peripherals
2× fully I2C-compatible channels
SPI (20 Mbps in master mode, 10 Mbps in slave mode%
With 4-byte FIFO on input and output stages
Up to 20 GPIO pins—Digital only GPIOs are 5 V tolerant
3× general-purpose timers
Watchdog timer (WDT%
Programmable logic array (PLA%
16 PLA elements
The DAC output range is programmable to one of two voltage ranges.
The DAC outputs have an enhanced feature of being able to retain
their output voltage during a watchdog or software reset sequence.
The devices operate from an on-chip oscillator and a PLL,
generating an internal high frequency clock of 41.78 MHz. This
clock is routed through a programmable clock divider from which
the MCU core clock operating frequency is generated. The
microcontroller core is an ARM7TDMI®, 16-bit/32-bit RISC
machine that offers up to 41 MIPS peak performance. Eight
kilobytes of SRAM and 62 kilobytes of nonvolatile Flash/EE
memory are provided on chip. The ARM7TDMI core views all
memory and registers as a single linear array.
The ADuC7023 contains an advanced interrupt controller. The
vectored interrupt controller (VIC) allows every interrupt to be
assigned a priority level. It also supports nested interrupts to a
maximum level of eight per IRQ and FIQ. When IRQ and FIQ
interrupt sources are combined, a total of 16 nested interrupt levels
are supported.
On-chip factory firmware supports in-circuit download via the I2C
serial interface port, and nonintrusive emulation is supported via
the JTAG interface. These features are incorporated into a low cost
QuickStart™ development system supporting this MicroConverter®
family. The part contains a 16-bit PWM with five output signals.
16-bit, 5-channel PWM
Power
Specified for 3 V operation
Active mode: 11 mA at 5 MHz, 28 mA at 41.78 MHz
Packages and temperature range
32-lead 5 mm × 5 mm LFCSP
40-lead LFCSP
For communication purposes, the part contains 2 × I2C channels that
can be individually configured for master or slave mode. An SPI
interface supporting both master and slave modes is also provided.
36-Lead WLCSP
The parts operate from 2.7 V to 3.6 V and are specified over an
industrial temperature range of −40°C to +125°C. e ADuC7023 is
available in either a 32-lead or 40-lead LFCSP package. A 36-ball
wafer level CSP package (WLCSP) is also available.
Fully specified for −40°C to +125°C operation
Tools
Low cost QuickStart development system
Full third-party support
Rev. E
Document Feedback
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