ADuC7025BSTZ62:  Precision Analog Microcontroller, 12-Bit Analog I/O, ARM7TDMI® MCU

The ADuC7019/ADuC7020/ADuC7021/ADuC7022/ADuC7024/ADuC7025/ADuC7026/ADuC7027/ADuC7028 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 only available on certain models (ADuC7020 and ADuC7026). 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 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.

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. 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. ADuC7019/20/21/22/24/25/26/27/28是全集成的1 MSPS,12-bit数据采集系统,在单芯片上集成了高性能的多通道ADC、16-bit/32-bit MCU,以及Flash/EE存储器。

ADC具有多达12个单端输出。另外还可提供与4个DAC输出引脚复用的4个输入。4个DAC输出只在特定型号(ADuC7020与ADuC7026)的器件中提供。在无需提供DAC输出的情况下,这些引脚仍然可用作ADC输入,这样便可获得最大的16个ADC输入通道。ADC可工作在单端或差分输入模式,输入电压范围为0 V ~ VREF。ADC外设集包括低漂移带隙基准源、温度传感器以及电压比较器。

根据器件型号的不同,芯片上最多可以提供内置4个缓冲的电压输出型DAC。DAC的输出范围被编程为三个电压范围之一。

通过片上振荡器和锁相环(PLL),可生成一个高达41.78 MHz的内部高频时钟信号。这个时钟信号通过一个可编程时钟分频器进行中继,生成MCU内核的时钟工作频率。微控制器内核是ARM7TDMI, 它是一款可提供41 MIPS峰值性能的16-bit/32-bit RISC机器。芯片内还具有8 kB SRAM与62 kB非易失Flash/EE存储器。ARM7TDMI内核将所有的存储器与寄存器看作是一个线性阵列。

产品应用领域 Applications
产品应用领域 Applications
ADuC7025BSTZ62 特点
Analog I/O On-chip peripherals 模拟I/O 片上外设
ADuC7025BSTZ62 功能框图

ADuC7025 芯片订购指南
产品型号 产品状态 封装 引脚 温度范围
ADuC7025BCPZ32 量产 64 ld LFCSP (9x9mm, 4.70mm exposed pad) 64 工业
ADuC7025BCPZ32-RL 量产 64 ld LFCSP (9x9mm, 4.70mm exposed pad) 64 工业
ADuC7025BCPZ62 量产 64 ld LFCSP (9x9mm, 4.70mm exposed pad) 64 工业
ADuC7025BCPZ62-RL 量产 64 ld LFCSP (9x9mm, 4.70mm exposed pad) 64 工业
ADuC7025BSTZ62 量产 64 ld LQFP (10x10mm) 64 工业
ADuC7025BSTZ62-RL 量产 64 ld LQFP (10x10mm) 64 工业
ADuC7025BSTZ62 应用技术支持与电子电路设计开发资源下载
  1. ADuC7025 数据手册DataSheet 下载 . pdf
  2. ADI 模拟器件公司比较器产品选型指南 . pdf
  3. Analog Devices, Inc. 美国模拟器件公司产品订购手册 .pdf