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| 型号： | MC68HC705JJ7CP |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP20 |
| 封装： | PLASTIC, DIP-20 |
| 文件页数： | 141/164页 |
| 文件大小： | 1165K |
| 代理商： | MC68HC705JJ7CP |
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Analog Subsystem
MC68HC705JJ7 MC68HC705JP7 Advance Information Data Sheet, Rev. 4.1
78
Freescale Semiconductor
ICEN
This is a read/write bit that enables a voltage comparison to trigger the input capture register of the
programmable timer when the CPF2 flag bit is set. Therefore, an A/D conversion could be started by
receiving an OCF or TOF from the programmable timer and then terminated when the voltage on the
external ramping capacitor reaches the level of the unknown voltage. The time of termination will be
stored in the 16-bit buffer located at $0014 and $0015. This bit is automatically set whenever mode 2
or 3 is selected by setting the ATD2 control bit. This bit is cleared by a reset of the device.
1 = Connects the CPF2 flag bit to the timer input capture register
0 = Connects the PB3/AN3 pin to the timer input capture register
NOTE
For the input capture to occur when the output of comparator 2 goes high,
the IEDG bit in the TCR must also be set.
When the ICEN bit is set, the input capture function of the programmable
timer is not connected to the PB3/AN3/TCAP pin but is driven by the CPF2
output flag from comparator 2. To return to capturing times from external
events, the ICEN bit must first be cleared before the timed event occurs.
CPIE
This is a read/write bit that enables an analog interrupt when either of the CPF1 or CPF2 flag bits is
set to a logic 1. This bit is cleared by a reset of the device.
1 = Enables analog interrupts when comparator flag bits are set
0 = Disables analog interrupts when comparator flag bits are set
NOTE
If both the ICEN and CPIE bits are set, they will both generate an interrupt
by different paths. One will be the programmable timer interrupt due to the
input capture and the other will be the analog interrupt due to the output of
comparator 2 going high. In this case, the input capture interrupt will be
entered first due to its higher priority. The analog interrupt will then need to
be serviced even if the comparator 2 output has been reset or the input
capture flag (ICF) has been cleared.
CP2EN
The CP2EN enable bit controls power to voltage comparator 2 in the analog subsystem. Powering
down a comparator will drop the supply current. This bit is cleared by a reset of the device.
1 = Writing a logic 1 powers up voltage comparator 2.
0 = Writing a logic 0 powers down voltage comparator 2.
NOTE
Voltage comparators power up slower than digital logic and their outputs
may go through indeterminate states which might set their respective flags
(CPF1, CPF2). It is therefore recommended to power up the charge current
source first (ISEN), then to power up any comparators, and finally clear the
flag bits by writing a logic 1 to the respective CPFR1 or CPFR2 bits in the
ACR.
CP1EN
The CP1EN enable bit will power down the voltage comparator 1 in the analog subsystem. Powering
down a comparator will drop the supply current. This bit is cleared by a reset of the device.
1 = Writing a logic 1 powers up voltage comparator 1
0 = Writing a logic 0 powers down voltage comparator 1
相关PDF资料 |
PDF描述 |
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| MC68HC705JJ7S | 8-BIT, UVPROM, 2.1 MHz, MICROCONTROLLER, CDIP20 |
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| MC68HC705K1CP | 8-BIT, OTPROM, MICROCONTROLLER, PDIP16 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MC68HC705JP7CDW | 功能描述:IC MCU 8BIT 28-SOIC RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:HC05 其它有关文件:STM32F101T8 View All Specifications 特色产品:STM32 32-bit Cortex MCUs 标准包装:490 系列:STM32 F1 核心处理器:ARM? Cortex?-M3 芯体尺寸:32-位 速度:36MHz 连通性:I²C，IrDA，LIN，SPI，UART/USART 外围设备:DMA，PDR，POR，PVD，PWM，温度传感器，WDT 输入/输出数:26 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:10K x 8 电压 - 电源 (Vcc/Vdd):2 V ~ 3.6 V 数据转换器:A/D 10x12b 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:36-VFQFN，36-VFQFPN 包装:托盘 配用:497-10030-ND - STARTER KIT FOR STM32497-8853-ND - BOARD DEMO STM32 UNIV USB-UUSCIKSDKSTM32-PL-ND - KIT IAR KICKSTART STM32 CORTEXM3497-8512-ND - KIT STARTER FOR STM32F10XE MCU497-8505-ND - KIT STARTER FOR STM32F10XE MCU497-8304-ND - KIT STM32 MOTOR DRIVER BLDC497-6438-ND - BOARD EVALUTION FOR STM32 512K497-6289-ND - KIT PERFORMANCE STICK FOR STM32MCBSTM32UME-ND - BOARD EVAL MCBSTM32 + ULINK-MEMCBSTM32U-ND - BOARD EVAL MCBSTM32 + ULINK2更多... 其它名称:497-9032STM32F101T8U6-ND |
| MC68HC705JP7CP | 制造商:Rochester Electronics LLC 功能描述: 制造商:Freescale Semiconductor 功能描述: |
| MC68HC705K1CDW | 制造商:Motorola Inc 功能描述: |
| MC68HC705KJ1CDW | 功能描述:8位微控制器 -MCU 8 Bit 4MHz 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 |
| MC68HC705KJ1CP | 功能描述:IC MCU 4MHZ 1.2K OTP 16-DIP RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:HC05 其它有关文件:STM32F101T8 View All Specifications 特色产品:STM32 32-bit Cortex MCUs 标准包装:490 系列:STM32 F1 核心处理器:ARM? Cortex?-M3 芯体尺寸:32-位 速度:36MHz 连通性:I²C，IrDA，LIN，SPI，UART/USART 外围设备:DMA，PDR，POR，PVD，PWM，温度传感器，WDT 输入/输出数:26 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:10K x 8 电压 - 电源 (Vcc/Vdd):2 V ~ 3.6 V 数据转换器:A/D 10x12b 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:36-VFQFN，36-VFQFPN 包装:托盘 配用:497-10030-ND - STARTER KIT FOR STM32497-8853-ND - BOARD DEMO STM32 UNIV USB-UUSCIKSDKSTM32-PL-ND - KIT IAR KICKSTART STM32 CORTEXM3497-8512-ND - KIT STARTER FOR STM32F10XE MCU497-8505-ND - KIT STARTER FOR STM32F10XE MCU497-8304-ND - KIT STM32 MOTOR DRIVER BLDC497-6438-ND - BOARD EVALUTION FOR STM32 512K497-6289-ND - KIT PERFORMANCE STICK FOR STM32MCBSTM32UME-ND - BOARD EVAL MCBSTM32 + ULINK-MEMCBSTM32U-ND - BOARD EVAL MCBSTM32 + ULINK2更多... 其它名称:497-9032STM32F101T8U6-ND |
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