ADUC7021BCPZ62

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1. DESCRIPTION

The ADUC7021BCPZ62 are fully integrated, 1 MSPS, 12-bit data acquisition systems 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 four DAC outputs are available only on certain models . However, in many cases where the DAC outputs are not present, these pins can still be used as additional ADC inputs, giving a maximum of 16 ADC input channels. The ADC can operate in single-ended or differential input mode. 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. Depending on the part model, up to four buffered voltage output DACs are available on-chip. The DAC output range is programmable to one of three voltage ranges. The devices operate from an on-chip oscillator and a PLL generating an internal high frequency clock of 41.78 MHz (UCLK). 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, which 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. On-chip factory firmware supports in-circuit serial download via the UART or I2C serial interface port; nonintrusive emulation is also supported via the JTAG interface. These features are incorporated into a low cost QuickStart™ development system supporting this MicroConverter® family. 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. When operating at 41.78 MHz, the power dissipation is typically 120 mW. The ADUC7021BCPZ62 are available in a variety of memory models and packages. 

2. FEATURES

    1. Analog I/O

        - Multichannel, 12-bit, 1 MSPS ADC Up to 16 ADC channels1

        - Fully differential and single-ended modes

        - 0 V to VREF analog input range

        - 12-bit voltage output DACs Up to 4 DAC outputs available

        - On-chip voltage reference

        - On-chip temperature sensor (±3°C)

        - Voltage comparator

    2. Microcontroller

        - ARM7TDMI core, 16-bit/32-bit RISC architecture

        - JTAG port supports code download and debug

    3. Clocking options

        - Trimmed on-chip oscillator (±3%)

        - External watch crystal

        - External clock source up to 44 MHz

        - 41.78 MHz PLL with programmable divider

    4. Memory

        - 62 kB Flash/EE memory, 8 kB SRAM

        - In-circuit download, JTAG-based debug

        - Software-triggered in-circuit reprogrammability

    5. On-chip peripherals

        - UART, 2× I2C and SPI serial I/O

        - Up to 40-pin GPIO port1

        - 4× general-purpose timers

        - Wake-up and watchdog timers (WDT)

        - Power supply monitor

        - 3-phase, 16-bit PWM generator1

        - Programmable logic array (PLA)

        - External memory interface, up to 512 kB

    6. Power

        - Specified for 3 V operation

        - Active mode: 11 mA at 5 MHz, 40 mA at 41.78 MHz

    7. Packages and temperature range

        - From 40-lead 6 mm × 6 mm LFCSP to 80-lead LQFP1

        - Fully specified for –40°C to +125°C operation

    8. Tools

        - Low cost QuickStart development system

        - Full third-party support

3. APPLICATIONS

    1. Industrial control and automation systems

    2. Smart sensors, precision instrumentation

    3. Base station systems, optical networking