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| 型号： | DS80C320-ECL+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 10/38页 |
| 文件大小： | 0K |
| 描述： | IC MCU HI SPEED 33MHZ 44-TQFP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 160 |
| 系列： | 80C |
| 核心处理器： | 8051 |
| 芯体尺寸： | 8-位 |
| 速度： | 33MHz |
| 连通性： | EBI/EMI，SIO，UART/USART |
| 外围设备： | 电源故障复位，WDT |
| 输入/输出数： | 32 |
| 程序存储器类型： | ROMless |
| RAM 容量： | 256 x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 4.5 V ~ 5.5 V |
| 振荡器型： | 外部 |
| 工作温度： | 0°C ~ 70°C |
| 封装/外壳： | 44-TQFP |
| 包装： | 托盘 |
| 产品目录页面： | 703 (CN2011-ZH PDF) |
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DS80C320/DS80C323 High-Speed/Low-Power Microcontrollers
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immediately preceding the setting of the Stop bit to guarantee a correct power-on delay when exiting Stop
mode.
The second feature allows an additional power saving option. This is the ability to start instantly when
exiting Stop mode. It is accomplished using an internal ring oscillator that can be used when exiting Stop
mode in response to an interrupt. The benefit of the ring oscillator is as follows.
Using Stop mode turns off the crystal oscillator and all internal clocks to save power. This requires that
the oscillator be restarted when exiting Stop mode. Actual start-up time is crystal dependent, but is
normally at least 4ms. A common recommendation is 10ms. In an application that will wakeup, perform a
short operation, then return to sleep, the crystal startup can be longer than the real transaction. However,
the ring oscillator will start instantly. The user can perform a simple operation and return to sleep before
the crystal has even stabilized. If the ring is used to start and the processor remains running, hardware will
automatically switch to the crystal once a power-on reset interval (65,536 clocks) has expired. This value
is used to guarantee stability even though power is not being cycled.
If the user returns to Stop mode prior to switching of crystal, then all clocks will be turned off again. The
ring oscillator runs at approximately 3MHz (1.5MHz at 3V) but will not be a precision value. No real-
time precision operations (including serial communication) should be conducted during this ring period.
Figure 4 shows how the operation would compare when using the ring, and when starting up normally.
The default state is to come out of Stop mode without using the ring oscillator.
This function is controlled using the RGSL - Ring Select bit at EXIF.1 (EXIF to 91h). When EXIF.1 is
set, the ring oscillator will be used to come out of Stop mode quickly. As mentioned above, the processor
will automatically switch from the ring (if enabled) to the crystal after a delay of 65,536 crystal clocks.
For a 3.57MHz crystal, this is approximately 18ms. The processor sets a flag called RGMD - Ring Mode
to tell software that the ring is being used. This bit at EXIF.2 will be logic 1 when the ring is in use. No
serial communication or precision timing should be attempted while this bit is set, since the operating
frequency is not precise.
相关PDF资料 |
PDF描述 |
|---|---|
| D38999/26WB98PA | CONN PLUG 6POS STRAIGHT W/PINS |
| DS80C320-ENG+ | IC MCU HI SPEED 25MHZ IND 44TQFP |
| VE-B42-IW-F2 | CONVERTER MOD DC/DC 15V 100W |
| VE-B41-IX-F4 | CONVERTER MOD DC/DC 12V 75W |
| VE-B41-IX-F3 | CONVERTER MOD DC/DC 12V 75W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS80C320-ECL/T&R | 制造商:Maxim Integrated Products 功能描述:IC MCU HI SPEED 33MHZ 44-TQFP |
| DS80C320-ECL/T&R | 功能描述:IC MCU HI SPEED 33MHZ 44-TQFP RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:80C 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:260 系列:73S12xx 核心处理器:80515 芯体尺寸:8-位 速度:24MHz 连通性:I²C，智能卡，UART/USART，USB 外围设备:LED，POR，WDT 输入/输出数:9 程序存储器容量:64KB（64K x 8） 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:2K x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 5.5 V 数据转换器:- 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:68-VFQFN 裸露焊盘 包装:管件 |
| DS80C320-ECL+ | 功能描述:8位微控制器 -MCU High-Speed Low-Power RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| DS80C320-ECR | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:High-Speed Microcontroller User Guide |
| DS80C320-END | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:High-Speed Microcontroller User Guide |
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