- 您现在的位置：买卖IC网 > PDF目录11203 > ADUC814ARU (Analog Devices Inc)IC ADC 12BIT W/FLASH MCU 28TSSOP PDF资料下载
参数资料
| 型号： | ADUC814ARU |
| 厂商： | Analog Devices Inc |
| 文件页数： | 58/72页 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT W/FLASH MCU 28TSSOP |
| 标准包装： | 50 |
| 系列： | MicroConverter® ADuC8xx |
| 核心处理器： | 8052 |
| 芯体尺寸： | 8-位 |
| 速度： | 16.78MHz |
| 连通性： | I²C，SPI，UART/USART |
| 外围设备： | POR，PSM，温度传感器，WDT |
| 输入/输出数： | 17 |
| 程序存储器容量： | 8KB（8K x 8） |
| 程序存储器类型： | 闪存 |
| EEPROM 大小： | 640 x 8 |
| RAM 容量： | 256 x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 2.7 V ~ 5.5 V |
| 数据转换器： | A/D 6x12b; D/A 2x12b |
| 振荡器型： | 内部 |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 28-TSSOP（0.173"，4.40mm 宽） |
| 包装： | 管件 |
| 配用： | EVAL-ADUC814QSZ-ND - KIT DEV FOR ADUC814 MICROCONVRTR |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页当前第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页
ADuC814
Rev. A | Page 61 of 72
Power-Saving Modes
Setting the idle and power-down mode bits, PCON.0 and
PCON.1, respectively, in the PCON SFR described in Table 5,
allows the chip to be switched from normal mode to idle mode,
and also to full power-down mode.
In idle mode, the oscillator continues to run, but the core clock
generated from the PLL is halted. The on-chip peripherals con-
tinue to receive the clock and remain functional. The CPU status
is preserved with the stack pointer, program counter, and all
other internal registers maintaining their data during idle mode.
Port pins and DAC output pins also retain their states in this
mode. The chip recovers from idle mode upon receiving any
enabled interrupt, or upon receiving a hardware reset.
In power-down mode, both the PLL and the clock to the core
are stopped. The on-chip oscillator can be halted or can
continue to oscillate depending on the state of the oscillator
power-down bit (OSC_PD) in the PLLCON SFR. The TIC,
being driven directly from the oscillator, can also be enabled
during power-down. All other on-chip peripherals however, are
shut down. Port pins retain their logic levels in this mode, but
the DAC output goes to a high impedance state (three-state).
During full power-down mode, the ADuC814 consumes a total
of 5 A typically. There are five ways of terminating power-
down mode, as described in the next sections.
Asserting RESET (Pin 10)
Returns to normal mode and all registers are set to their default
state. Program execution starts at the reset vector once the RESET
pin is de-asserted.
Cycling Power
All registers are set to their default state and program execution
starts at the reset vector.
Time Interval Counter (TIC) Interrupt
Power-down mode is terminated and the CPU services the TIC
interrupt. The RETI at the end of the TIC interrupt service
routine returns the core to the instruction following the one
that enabled power-down.
SPI Interrupt
Power-down mode is terminated and the CPU services the SPI
interrupt. The RETI at the end of the ISR returns the core to the
instruction following the one that enabled power-down. Note
that the SPI power-down interrupt enable bit (SERIPD) in the
PCON SFR must first be set to allow this mode of operation.
INT0 Interrupt
Power-down mode is terminated and the CPU services the
INT0 interrupt. The RETI at the end of the ISR returns the core
to the instruction following the one that enabled power-down.
The INT0 pin must not be driven low during or within two
machine cycles of the instruction that initiates power-down
mode. Note that the INT0 power-down interrupt enable bit
(INT0PD) in the PCON SFR must first be set to allow this mode
of operation.
Power-On Reset
An internal POR (power-on-reset) is implemented on the
ADuC814. For DVDD below 2.45 V, the internal POR holds the
ADuC814 in reset. As DVDD rises above 2.45 V, an internal timer
times out for approximately128 ms before the part is released
from reset. The user must ensure that the power supply has
reached a stable 2.7 V minimum level by this time. Likewise on
power-down, the internal POR holds the ADuC814 in reset
until the power supply has dropped below 1 V. Figure 57
illustrates the operation of the internal POR in detail.
128ms TYP
1.0V
128ms TYP
2.45V TYP
1.0V TYP
INTERNAL
CORE RESET
DVDD
02748-A
-063
Figure 57. Internal POR Operation
Grounding and Board Layout Recommendations
As with all high resolution data converters, special attention
must be paid to grounding and PC board layout of ADuC814
based designs in order to achieve optimum performance from
the ADCs and DAC. Although the ADuC814 has separate pins
for analog and digital ground (AGND and DGND), the user
must not tie these to two separate ground planes unless the two
ground planes are connected together very close to the ADuC814,
as illustrated in the simplified example of Figure 58a. In systems
where digital and analog ground planes are connected together
somewhere else (at the system’s power supply for example), they
cannot be connected again near the ADuC814 because a ground
loop would result. In these cases, tie all of the ADuC814’s
AGND and DGND pins to the analog ground plane, as
illustrated in Figure 58b. In systems with only one ground plane,
ensure that the digital and analog components are physically
separated onto separate halves of the board such that digital
return currents do not flow near analog circuitry and vice versa.
The ADuC814 can then be placed between the digital and
analog sections, as illustrated in Figure 58c.
相关PDF资料 |
PDF描述 |
|---|---|
| VI-BTK-IX | CONVERTER MOD DC/DC 40V 75W |
| VI-BTK-IW | CONVERTER MOD DC/DC 40V 100W |
| ADUC7128BSTZ126-RL | IC DAS MCU ARM7 ADC/DDS 64-LQFP |
| VI-BTJ-IX | CONVERTER MOD DC/DC 36V 75W |
| VI-BTJ-IW | CONVERTER MOD DC/DC 36V 100W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ADUC814ARU-D2 | 制造商:Analog Devices 功能描述:12 BIT ADC WITH EMBEDDED 8-BIT MICRO I.C - Tape and Reel 制造商:Rochester Electronics LLC 功能描述:12 BIT ADC WITH EMBEDDED 8-BIT MICRO I.C - Bulk |
| ADUC814ARU-REEL | 制造商:Analog Devices 功能描述:MCU 8-Bit ADuC8xx 8052 CISC 8KB Flash 3V/5V 28-Pin TSSOP T/R 制造商:Analog Devices 功能描述:12 BIT ADC WITH EMBEDDED 8-BIT MICRO I.C - Tape and Reel |
| ADUC814ARU-REEL7 | 制造商:Analog Devices 功能描述:MCU 8-Bit ADuC8xx 8052 CISC 8KB Flash 3V/5V 28-Pin TSSOP T/R 制造商:Analog Devices 功能描述:12 BIT ADC WITH EMBEDDED 8-BIT MICRO I.C - Tape and Reel 制造商:Rochester Electronics LLC 功能描述:12 BIT ADC WITH EMBEDDED 8-BIT MICRO I.C - Tape and Reel |
| ADUC814ARUZ | 功能描述:IC ADC 12BIT W/FLASH MCU 28TSSOP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:MicroConverter® ADuC8xx 产品培训模块:MCU Product Line Introduction XMEGA Introduction AVR XMEGA USB Connectivity 标准包装:90 系列:AVR® XMEGA 核心处理器:AVR 芯体尺寸:8/16-位 速度:32MHz 连通性:I²C，IrDA，SPI，UART/USART 外围设备:欠压检测/复位，DMA，POR，PWM，WDT 输入/输出数:50 程序存储器容量:192KB（96K x 16） 程序存储器类型:闪存 EEPROM 大小:4K x 8 RAM 容量:16K x 8 电压 - 电源 (Vcc/Vdd):1.6 V ~ 3.6 V 数据转换器:A/D 16x12b; D/A 2x12b 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:64-TQFP 包装:托盘 配用:ATSTK600-RC14-ND - STK600 SOCKET/ADAPTER 64TQFPATSTK600-TQFP64-ND - STK600 SOCKET/ADAPTER 64-TQFPATAVRONEKIT-ND - KIT AVR/AVR32 DEBUGGER/PROGRMMRATAVRISP2-ND - PROGRAMMER AVR IN SYSTEM |
| ADUC814ARUZ-REEL | 功能描述:IC MCU FLASH 12BIT ADC 28TSSOP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:MicroConverter® ADuC8xx 标准包装:38 系列:Encore!® XP® 核心处理器:eZ8 芯体尺寸:8-位 速度:5MHz 连通性:IrDA，UART/USART 外围设备:欠压检测/复位，LED，POR，PWM，WDT 输入/输出数:16 程序存储器容量:4KB（4K x 8） 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:1K x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 3.6 V 数据转换器:- 振荡器型:内部 工作温度:-40°C ~ 105°C 封装/外壳:20-SOIC（0.295"，7.50mm 宽） 包装:管件 其它名称:269-4116Z8F0413SH005EG-ND |
发布紧急采购，3分钟左右您将得到回复。