ADUC7128 Series

Precision Analog Microcontroller ARM7TDMI®MCU with 12-Bit ADC and DDS DAC

Catalog

Precision Analog Microcontroller ARM7TDMI®MCU with 12-Bit ADC and DDS DAC

Part	Oscillator Type	Connectivity	Number of I/O	RAM Size	Supplier Device Package	Core Processor	Speed	Peripherals	Operating Temperature [Min]	Operating Temperature [Max]	Mounting Type	Core Size [Min]	Core Size [Max]	Data Converters	Package / Case	Program Memory Type	Program Memory Size
Analog Devices ADUC7128BCPZ126-RL	Internal	I2C SPI UART/USART	28	2 K	64-LFCSP-VQ (9x9)	ARM7®	41.78 MHz	PLA POR PSM PWM Temp Sensor WDT	-40 °C	125 °C	Surface Mount	16 Bit	32 Bit	A/D 10x12b D/A 1x10b	64-VFQFN Exposed Pad CSP	FLASH	126 KB

Catalog

Precision Analog Microcontroller ARM7TDMI®MCU with 12-Bit ADC and DDS DAC

Key Features

• Analog I/OMulti-Channel, 12-bit, 1MSPS ADCUp to 14 analog-to-digital converter (ADC) channelsFully differential and single-ended modes0 to VREFAnalog Input Range10-bit digital-to-analog converter (DAC)32-bit 21 MHz direct digital synthesis (DDS)Current-to-Voltage (I/V) ConversionIntegrated second-order low-pass filter (LPF)DDS Input to DAC100 Ω line driver

• On-Chip Voltage Reference

• On-Chip Temperature Sensor (±3°C)

• Voltage Comparator

• MicrocontrollerARM7TDMI Core, 16/32-bit RISC architectureJTAG Port supports code download and debugExternal Watch crystal/ Clock Source41.78 MHz PLL with 8-way programmable dividerOptional trimmed on-chip oscillator

• See datasheet for additional features

Description

The ADuC7128 /ADuC7129are fully integrated, 1 MSPS, 12-bit data acquisition systems incorporating a high performance, multi-channel analog-to-digital converter (ADC), DDS with line driver, 16-/32-bit MCU, and Flash/EE memory on a single chip.The ADC consists of up to 14 single-ended inputs. The ADC can operate in single-ended or differential input modes. The ADC input voltage is 0 to VREF. Low drift band gap reference, temperature sensor, and voltage comparator complete the ADC peripheral set.The ADuC7128/ADuC7129 integrate a differential line driver output. This line driver transmits a sine wave whose values are calculated by an on-chip DDS or a voltage output determined by the DACDAT MMR.The devices operate from an on-chip oscillator and 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-/32-bit reduced instruction set computer (RISC), offering up to 41 MIPS peak performance. There are 126 kB of nonvolatile Flash/EE provided on-chip, as well as 8 kB of SRAM. 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 serial interface port, and 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 3.0 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 135 mW. The line driver output, if enabled, consumes an additional 30 mW.