EVAL-ADuC7028QSZ: 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
- 工业控制与自动化系统
- 智能传感器、精密仪表
- 基站系统、光网络
产品应用领域 Applications
- Industrial control and automation systems
- Smart sensors, precision instrumentation
- Base station systems, optical networking
EVAL-ADuC7028QSZ 特点
- Microcontroller
ARM7TDMI core, 16-bit/32-bit RISC architecture
JTAG port supports code download and debug - Clocking options
Trimmed on-chip oscillator (±3%)
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
- 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 available1 - On-chip voltage reference
- On-chip temperature sensor (±3°C)
- Voltage comparator
- Power
Specified for 3 V operation
Active mode: 11 mA @ 5 MHz, 40 mA @ 41.78 MHz - Packages and temperature range
From 40-lead 6 mm x 6 mm LFCSP to 80-lead LQFP1
Fully specified for –40°C to +125°C operation - Tools
Low cost QuickStart™ development system
Full third-party support
- UART, 2 x I²C® and SPI® serial I/O
- Up to 40-pin GPIO port1
- 4x 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
- 微控制器
ARM7TDMI内核,16-bit/32-bit RISC架构
JTAG端口支持代码下载与调试 - 时钟选择
微调片上振荡器（±3%）
外部晶体
高达44 MHz的外部时钟源
41.78 MHz锁相环（PLL）,包含可编程分频器 - 存储器
62 kB Flash/EE存储器,8 kB SRAM
在线下载,基于JTAG的调试
软件触发在线重新编程
- 多通道,12-bit,1 MSPS ADC
多达16个ADC通道1 - 全差分与单端模式
- 模拟输入范围：0 V～VREF
- 12-bit电压输出DAC
多达4个DAC输出1 - 内置电压基准源
- 内置温度传感器（±3°C）
- 电压比较器
- 电源
工作电压：3 V
工作模式：11 mA @ 5 MHz,40 mA @ 41.78 MHz - 封装与温度范围
从6 mm x 6 mm的40引脚LFCSP封装到80引脚LQFP封装1
工作温度范围：-40°C ～ +125°C - 工具
低成本QuickStart™开发工具
完全第三方支持
- UART, 2 x I²C® and SPI® serial I/O
- Up to 40-pin GPIO port1
- 4x 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 kB1
EVAL-ADuC7028QSZ 功能框图
| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 |
|---|---|---|---|---|
| ADuC7028BBCZ62 | 量产 | 64 Ball CSPBGA (6x6mm, 1.4mm thick) | 64 | 工业 |
| ADuC7028BBCZ62-RL | 量产 | 64 Ball CSPBGA (6x6mm, 1.4mm thick) | 64 | 工业 |
| EVAL-ADuC7028QSZ | 量产 | 评估板 | - | 待定 |
