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单片机编程 飞思卡尔S12系列单片机系统硬件设计

MC9S12DG128 的封装有两种,一种为80 引角的,它没有引出扩展总线,且AD 转换只引出了8 路;一种为112 引角的,两种都采用了表面贴片式封装.
https://www.eeworm.com/dl/502/30824.html
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单片机编程 Freescale MC9S12C64介绍及编程练习

特性及优点• 内嵌FLASH和CAN的低成本器件– S12系列的低端产品– 16-位的性能8-位的价格• 引脚/封装– 48/52 LQFP– 80 QFP, 与B&D 系列引脚兼容– Flash从16K-128K,易于产品升级• 8通道10位AD– 7μsec, 10-bit 单次转换时间, 具有扫描模式 ...
https://www.eeworm.com/dl/502/30837.html
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单片机编程 P89LPC900在高精度模数转换场合的应用

PHILIPS 的P89LPC900 系列FLASH 单片机部分型号提供了8 位精度的AD 转换器,为许多控制系统带来方便,诸如温度控制、运动控制等,在MCU 发出控制指令后,常常需要将执行机构的情况反馈给MCU,从而构成一个闭环系统,达到精细控制的目的。这一检测过程一般由各种传感器完成,在某些对成本有高要求的场合,为了控制成本,也常 ...
https://www.eeworm.com/dl/502/30977.html
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单片机编程 X-tal oscillators on 8-bit mic

<Almost since the introduction of microcontrollers as electronic components there always has been an oscillatorcircuit on the device to make it work. From application point of view only some external components wererequired to make it work. However, to make sure that it will always work required mor ...
https://www.eeworm.com/dl/502/30992.html
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单片机编程 PCA9670 Remote 8-bit IO expand

The PCA9670 provides general purpose remote I/O expansion for most microcontrollerfamilies via the two-line bidirectional bus (I2C-bus) and is a part of the Fast-mode Plusfamily.The PCA9670 is a drop-in upgrade for the PCF8574 providing higher Fast-mode Plus(Fm+) I2C-bus speeds (1 MHz versus 400 kHz ...
https://www.eeworm.com/dl/502/31015.html
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单片机编程 PCA9672 Remote 8-bit IO expand

The PCA9672 provides general purpose remote I/O expansion for most microcontrollerfamilies via the two-line bidirectional bus (I2C-bus) and is a part of the Fast-mode Plusfamily.The PCA9672 is a drop-in upgrade for the PCF8574 providing higher Fast-mode Plus(Fm+) I2C-bus speeds (1 MHz versus 400 kHz ...
https://www.eeworm.com/dl/502/31019.html
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单片机编程 PCA9674 PCA9674A Remote 8-bit

The PCA9674/74A is a drop-in upgrade for the PCF8574/74A providing higher Fast-modePlus I2C-bus speeds (1 MHz versus 400 kHz) so that the output can support PWMdimming of LEDs, higher I2C-bus drive (30 mA versus 3 mA) so that many more devicescan be on the bus without the need for bus buffers, highe ...
https://www.eeworm.com/dl/502/31023.html
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单片机编程 8-bit I2C-bus and SMBus IO port with reset

The PCA9557 is a silicon CMOS circuit which provides parallel input/output expansion for SMBus and I2C-bus applications. The PCA9557 consists of an 8-bit input port register, 8-bit output port register, and an I2C-bus/SMBus interface. It has low current consumption and a high-impedance open-dra ...
https://www.eeworm.com/dl/502/31025.html
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单片机编程 RSM-4055 8通道隔离数字量输入输出模块

RSM-4055 是带隔离的数字量输入输出模块。模块有8 路隔离数字量输入,8 路隔离数字量输出。数字量输入可支持开关触点信号或电平信号,数字量输出采用开漏输出,最大负载可达50V,50mA,同时模块的DI 通道还具有计数功能,能对小于2kHz 的数字脉冲信号进行计数,DI 输入检测和计数都具有数字滤波功能能有效滤掉干扰信号,数 ...
https://www.eeworm.com/dl/502/31045.html
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单片机编程 Adding 32 KB of Serial SRAM to

Although Stellaris microcontrollers have generous internal SRAM capabilities, certain applicationsmay have data storage requirements that exceed the 8 KB limit of the Stellaris LM3S8xx seriesdevices. Since microcontrollers do not have an external parallel data-bus, serial memory optionsmust be consi ...
https://www.eeworm.com/dl/502/31063.html
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