2024年11月2日发(作者：令荣)
ADIADuC702x脉搏血氧仪解决方案
脉搏血氧仪以非介入方式测量血液中的含氧量,包括发射路径,接
收路径,显示和背光,数据接口以及音频报警。发射路径包括红光
LED,红外光LED和用于驱动LED的DAC。接收路径包括光电二极管
传感器,信号调理,模数转换器和处理器。ADI的脉搏血氧仪解决方
案采用ADuC7024精密模拟微控制器,具有多达16路的12位1MSPS
的ADC和采用ARM7TDMI核16位/32位RISC架构的MCU.本文介绍了
ADuC7019/20/21/22/24/25/26/27/28/29主要特性和功能框图,
ADuC7024评估板主要特性, 电路图和材料清单,以及ADI脉搏血氧
仪功能框图及其主要元件表, 脉搏血氧仪演示系统框图和所用的主
要产品表.
The ADuC7019/20/21/22/24/25/26/27/28/29 are fully
integrated, 1 MSPS, 12bit data acquisition systems
incorporating high performance multichannel ADCs,
16bit/32bit MCUs, and Flashreg;/EE memory on a single chip.
The ADC consists of up to 12 singleended 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 (ADuC7020, ADuC7026,
ADuC7028, and ADuC7029). 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
第 1 页 共 5 页
channels. The ADC can operate in singleended 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 onchip. The DAC output range is
programmable to one of three voltage ranges.
The devices operate from an onchip 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 ARM7TDMIreg;,
16bit/32bit RISC machine, which offers up to 41 MIPS peak
performance. Eight kilobytes of SRAM and 62 kilobytes of
nonvolatile Flash/EE memory are provided onchip. The
ARM7TDMI core views all memory and registers as a single
linear array.
Onchip factory firmware supports incircuit 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 MicroConverterreg;
第 2 页 共 5 页
family.
The parts operate from 2.7 V to 3.6 V and are specified
over an industrial temperature range of 40℃ to +125℃.
When operating at 41.78 MHz, the power dissipation is
typically 120 mW. The ADuC7019/20/21/22/24/25/26/27/28/29
are available in a variety of memory models and packages
(see Ordering Guide).
ADuC7019/20/21/22/24/25/26/27/28/29主要特性:
Analog I/O
Multichannel, 12bit, 1 MSPS ADC
Up to 16 ADC channels1
Fully differential and singleended modes
0 V to VREF analog input range
12bit voltage output DACs
Up to 4 DAC outputs available1
Onchip voltage reference
Onchip temperature sensor (3C)
Voltage comparator
Microcontroller
ARM7TDMI core, 16bit/32bit RISC architecture
JTAG port supports code download and debug
Clocking options
第 3 页 共 5 页
Trimmed onchip 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
Incircuit download, JTAGbased debug
Softwaretriggered incircuit reprogrammability
Onchip peripherals
UART, 2 I2Creg; and SPI serial I/O
Up to 40pin GPIO port1
4 generalpurpose timers
Wakeup and watchdog timers (WDT)
Power supply monitor
3phase, 16bit PWM generator1
Programmable logic array (PLA)
External memory interface, up to 512 kB1
Power
Specified for 3 V operation
Activemode:11mA@5MHz,*************
Packages and temperature range
From 40lead 6 mm 6 mm LFCSP to 80lead LQFP1
第 4 页 共 5 页
Fully specified for 40℃ to +125℃ operation
Tools
Low cost QuickStart development system
Full thirdparty support
ADuC7019/20/21/22/24/25/26/27/28/29应用:
Industrial control and automation systems
Smart sensors, precision instrumentation
Base station systems, optical networking
第 5 页 共 5 页
2024年11月2日发(作者：令荣)
ADIADuC702x脉搏血氧仪解决方案
脉搏血氧仪以非介入方式测量血液中的含氧量,包括发射路径,接
收路径,显示和背光,数据接口以及音频报警。发射路径包括红光
LED,红外光LED和用于驱动LED的DAC。接收路径包括光电二极管
传感器,信号调理,模数转换器和处理器。ADI的脉搏血氧仪解决方
案采用ADuC7024精密模拟微控制器,具有多达16路的12位1MSPS
的ADC和采用ARM7TDMI核16位/32位RISC架构的MCU.本文介绍了
ADuC7019/20/21/22/24/25/26/27/28/29主要特性和功能框图,
ADuC7024评估板主要特性, 电路图和材料清单,以及ADI脉搏血氧
仪功能框图及其主要元件表, 脉搏血氧仪演示系统框图和所用的主
要产品表.
The ADuC7019/20/21/22/24/25/26/27/28/29 are fully
integrated, 1 MSPS, 12bit data acquisition systems
incorporating high performance multichannel ADCs,
16bit/32bit MCUs, and Flashreg;/EE memory on a single chip.
The ADC consists of up to 12 singleended 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 (ADuC7020, ADuC7026,
ADuC7028, and ADuC7029). 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
第 1 页 共 5 页
channels. The ADC can operate in singleended 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 onchip. The DAC output range is
programmable to one of three voltage ranges.
The devices operate from an onchip 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 ARM7TDMIreg;,
16bit/32bit RISC machine, which offers up to 41 MIPS peak
performance. Eight kilobytes of SRAM and 62 kilobytes of
nonvolatile Flash/EE memory are provided onchip. The
ARM7TDMI core views all memory and registers as a single
linear array.
Onchip factory firmware supports incircuit 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 MicroConverterreg;
第 2 页 共 5 页
family.
The parts operate from 2.7 V to 3.6 V and are specified
over an industrial temperature range of 40℃ to +125℃.
When operating at 41.78 MHz, the power dissipation is
typically 120 mW. The ADuC7019/20/21/22/24/25/26/27/28/29
are available in a variety of memory models and packages
(see Ordering Guide).
ADuC7019/20/21/22/24/25/26/27/28/29主要特性:
Analog I/O
Multichannel, 12bit, 1 MSPS ADC
Up to 16 ADC channels1
Fully differential and singleended modes
0 V to VREF analog input range
12bit voltage output DACs
Up to 4 DAC outputs available1
Onchip voltage reference
Onchip temperature sensor (3C)
Voltage comparator
Microcontroller
ARM7TDMI core, 16bit/32bit RISC architecture
JTAG port supports code download and debug
Clocking options
第 3 页 共 5 页
Trimmed onchip 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
Incircuit download, JTAGbased debug
Softwaretriggered incircuit reprogrammability
Onchip peripherals
UART, 2 I2Creg; and SPI serial I/O
Up to 40pin GPIO port1
4 generalpurpose timers
Wakeup and watchdog timers (WDT)
Power supply monitor
3phase, 16bit PWM generator1
Programmable logic array (PLA)
External memory interface, up to 512 kB1
Power
Specified for 3 V operation
Activemode:11mA@5MHz,*************
Packages and temperature range
From 40lead 6 mm 6 mm LFCSP to 80lead LQFP1
第 4 页 共 5 页
Fully specified for 40℃ to +125℃ operation
Tools
Low cost QuickStart development system
Full thirdparty support
ADuC7019/20/21/22/24/25/26/27/28/29应用:
Industrial control and automation systems
Smart sensors, precision instrumentation
Base station systems, optical networking
第 5 页 共 5 页