ADUC847 MicroConverter® Multichannel24-/16-Bit ADCs with Embedded 62 kB Flash and Single-Cycle MCU

The ADuC845, ADuC847, and ADuC848 are single-cycle, 12.58 MIPs, 8052 core upgrades to the ADuC834 and ADuC836. They include additional analog inputs for applications requiring more ADC channels.

The ADuC845, ADuC847, and ADuC848 are complete smart transducer front ends. The family integrates high resolution Σ-Δ ADCs with flexible, up to 10-channel, input multiplexing, a fast 8-bit MCU, and program and data Flash/EE memory on a single chip.

The ADuC845 includes two (primary and auxiliary) 24-bit Σ-Δ ADCs with internal buffering and PGA on the primary ADC. The ADuC847 includes the same primary ADC as the ADuC845 (auxiliary ADC removed). The ADuC848 is a 16-bit ADC version of the ADuC847.

The ADCs incorporate flexible input multiplexing, a temperature sensor (ADuC845 only), and a PGA (primary ADC only) allowing direct measurement of low-level signals. The ADCs include on-chip digital filtering and programmable output data rates that are intended for measuring wide dynamic range and low frequency signals, such as those in weigh scale, strain gage, pressure transducer, or temperature measurement applications.

The devices operate from a 32 kHz crystal with an on-chip PLL generating a high frequency clock of 12.58 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 optimized single-cycle 8052 offering up to 12.58 MIPs performance while maintaining 8051 instruction set compatibility.

The available nonvolatile Flash/EE program memory options are 62 kbytes, 32 kbytes, and 8 kbytes. 4 kbytes of nonvolatile Flash/EE data memory and 2304 bytes of data RAM are also provided on-chip. The program memory can be configured as data memory to give up to 60 kbytes of NV data memory in data logging applications.

On-chip factory firmware supports in-circuit serial download and debug modes (via UART), as well as single-pin emulation mode via the EA pin. The ADuC845, ADuC847, and ADuC848 are supported by the QuickStart™ development system featuring low cost software and hardware development tools.

Applications

Features and Benefits
  • High resolution Σ-Δ ADCs
  • Single 24-bit ADC
  • Up to 10 ADC input channels on all devices
  • 24-bit no missing codes
  • 22-bit rms (19.5 bit p-p) effective resolution
  • Offset drift 10 nV/°C, gain drift 0.5 ppm/°C chop enabled
  • Memory
    • 62-kbyte on-chip Flash/EE program memory
    • 4-kbyte on-chip Flash/EE data memory
    • Flash/EE, 100-year retention, 100 kcycle endurance
    • 3 levels of Flash/EE program memory security
    • In-circuit serial download (no external hardware)
    • High speed user download (5 sec)
    • 2304 bytes on-chip data RAM
  • 62-kbyte on-chip Flash/EE program memory
  • 4-kbyte on-chip Flash/EE data memory
  • Flash/EE, 100-year retention, 100 kcycle endurance
  • 3 levels of Flash/EE program memory security
  • In-circuit serial download (no external hardware)
  • High speed user download (5 sec)
  • 2304 bytes on-chip data RAM
  • See data sheet for additional features
    • Processors & DSP
    Data Sheets
    Documentnote
    ADuC845/ADuC847/ADuC848: MicroConverter® Multi-Channel 24-/16-Bit ADCs with Embedded 62 kB FLASH and Single-Cycle MCU Data Sheet (Rev. D)
    ADuC845/ADuC847/ADuc848: Anomoly Sheet for Silicon Rev. C (Rev B, 08/2004)    		PDF 1.07 M
    Application Notes
    Documentnote
    AN-282: Fundamentals of Sampled Data SystemsPDF 2131 kB
    AN-660: XY-Matrix Keypad Interface to MicroConverter® (Rev. 0)
    AN-660 Accompanying Source Code    		PDF 286 kB
    AN-759: Expanding the Number of DAC Outputs on the ADuC8xx and ADuC702x Families (uC012) (Rev. 0)
    AN-759 Companion Code (zip, 3,464 bytes)    		PDF 112 kB
    AN-709: RTD Interfacing and Linearization Using an ADuC8xx MicroConverter&® (Rev. 0)
    AN-709 Accompanying Files (Tools and Source Code)    		PDF 698 kB
    AN-1139: Understanding the Parallel Programming Protocol (Rev. 0)PDF 174 kB
    AN-1074: Understanding the Serial Download Protocol (Formerly uC004) (Rev. 0)PDF 245 kB
    UC-009: Addressing 16MB of External Data MemoryPDF 173 kB
    UC-006: A 4-wire UART-to-PC Interface
    uC006 Gerber File (1) uC006 Files uC006 Gerber Files (2)    		PDF 157.71 K
    User Guides
    Documentnote
    UG-041: ADuC8xx Evaluation Kit Getting Started User GuidePDF 679 kB
    ADuC845/ADuC847/ADuC848 Quick Reference GuidePDF 95 kB
    Order Information
    Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
    ADUC847BCPZ62-3 Production56 ld LFCSP (8x8mm, 6.1mm EP)OTH 260-40 to 85C11.089.76Y
    ADUC847BCPZ62-5 Production56 ld LFCSP (8x8mm, 6.1mm EP)OTH 260-40 to 85C11.089.76Y
    ADUC847BCPZ8-3 Production56 ld LFCSP (8x8mm, 6.1mm EP)OTH 260-40 to 85C6.735.92Y
    ADUC847BCPZ8-5 Production56 ld LFCSP (8x8mm, 6.1mm EP)OTH 260-40 to 85C6.735.92Y
    ADUC847BSZ32-3 Production52 ld MQFP (13.90mm width)OTH 96-40 to 125C9.067.97Y
    ADUC847BSZ32-5 Production52 ld MQFP (13.90mm width)OTH 96-40 to 125C9.067.97Y
    ADUC847BSZ62-3 Production52 ld MQFP (13.90mm width)OTH 96-40 to 125C11.089.76Y
    ADUC847BSZ62-5 Production52 ld MQFP (13.90mm width)OTH 96-40 to 125C11.089.76Y
    ADUC847BSZ8-3 Last Time Buy52 ld MQFP (13.90mm width)OTH 96-40 to 125C6.735.92Y
    ADUC847BSZ8-5 Production52 ld MQFP (13.90mm width)OTH 96-40 to 125C6.735.92Y
    Evaluation Boards
    Part NumberDescriptionPriceRoHS
    EVAL-ADUC847QSZADuC847 Quickstart development system59Y
    EVAL-ADUC-CABLE1ZUART Serial downloader cable15.18Y
    USB-EA-CONVZUSB-EA Emulator75Y
    ADuC845/ADuC847/ADuC848: MicroConverter® Multi-Channel 24-/16-Bit ADCs with Embedded 62 kB FLASH and Single-Cycle MCU Data Sheet (Rev. D) aduc845
    ADuC845/ADuC847/ADuc848: Anomoly Sheet for Silicon Rev. C (Rev B, 08/2004) aduc845
    AN-282: Fundamentals of Sampled Data Systems ad1674
    AN-660: XY-Matrix Keypad Interface to MicroConverter® (Rev. 0) aduc812
    AN-660 Accompanying Source Code aduc812
    AN-759: Expanding the Number of DAC Outputs on the ADuC8xx and ADuC702x Families (uC012) (Rev. 0) aduc812
    AN-709: RTD Interfacing and Linearization Using an ADuC8xx MicroConverter&® (Rev. 0) aduc812
    AN-1139: 了解并行编程协议 (Rev. 0) aduc831
    AN-1139: Understanding the Parallel Programming Protocol (Rev. 0) aduc831
    AN-1074: 理解串行下载协议(之前称为uC004) (Rev. 0) aduc812
    AN-1074: Understanding the Serial Download Protocol (Formerly uC004) (Rev. 0) aduc812
    AN-759: 扩展ADuC8xxADuC702x系列的DAC输出数 (uC012) (Rev. 0) aduc812
    AN-759 Companion Code (zip, 3,464 bytes) aduc812
    AN-282: 采样数据系统基本原理[中文版] (Rev. A) ad75019
    AN-709: 使用ADuC8xx MicroConverter®实现RTD接口和线性化 (Rev. 0) aduc812
    AN-709 Accompanying Files (Tools and Source Code) aduc812
    UC-009: Addressing 16MB of External Data Memory aduc812
    UC-006: A 4-wire UART-to-PC Interface aduc812
    uC006 Gerber File (1) aduc812
    UG-041: ADuC8xx Evaluation Kit Getting Started User Guide aduc812
    ADuC845/ADuC847/ADuC848 Quick Reference Guide aduc845
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