參數(shù)資料
型號： MC68HC705C9AVFN
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PQCC44
封裝： PLASTIC, LCC-44
文件頁數(shù)： 140/177頁
文件大?。?/td> 1941K
代理商： MC68HC705C9AVFN
Resets
COP During Stop Mode
MC68HC705C9A — Rev. 4.0
Advance Information
MOTOROLA
Resets
65
In the event that an inadvertent STOP instruction is executed, neither
COP will allow the system to recover. The MC68HC705C9A offers two
solutions to this problem, one available in C9A mode (see 5.10.1 Clock
Monitor Reset) and one available in C12A mode (see 5.10.2 STOP
5.10.1 Clock Monitor Reset
When configured as a C9A, the clock monitor circuit can provide a
system reset if the clock stops for any reason, including stop mode.
When the CME bit in the C9A COP control register is set, the clock
monitor detects the absence of the internal bus clock for a certain period
of time. The timeout period is dependent on the processing parameters
and varies from 5
s to 100 s, which implies that systems using a bus
clock rate of 200 kHz or less should not use the clock monitor.
If a slow or absent clock is detected, the clock monitor causes a system
reset. The reset is issued to the external system via the bidirectional
RESET pin for four bus cycles if the clock is slow or until the clocks
recover in the case where the clocks are absent.
5.10.2 STOP Instruction Disable Option
On the ROM device MC68HC05C12A, stop mode can be disabled by
mask option. This causes the CPU to interpret the STOP instruction as
a NOP so the device will never enter stop mode; if the user code is not
being executed properly, the COP will provide a system reset.
To emulate this feature on the MC68HC705C9A (configured as an
MC68HC05C12A), set the STOPDIS bit in the C12MOR. Stop mode will
not actually be disabled as on the MC68HC05C12A, but the clock
monitor circuit will be activated. If the CPU executes a STOP instruction,
the clock monitor will provide a system reset.
NOTE:
This feature cannot be used with operating frequencies of 200 kHz or
less.
相關(guān)PDF資料
PDF描述
MC68HC705C9AP 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP40
MC68HC705C9AFB 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PQFP44
MC68LNC705C9ACFN 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PQCC44
MC68HC705C9ACS 8-BIT, UVPROM, 2.1 MHz, MICROCONTROLLER
MC68HC705CT4FB 8-BIT, OTPROM, 2.048 MHz, MICROCONTROLLER, PQFP44
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68HC705C9AVFNE 功能描述:8位微控制器 -MCU 8B MCU 352 BYTES RAM RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
MC68HC705E6CDW 制造商:Motorola Inc 功能描述: 制造商:MOTOROLA 功能描述:
MC68HC705G1B 制造商:Rochester Electronics LLC 功能描述:- Bulk
MC68HC705J1A 制造商:Freescale Semiconductor 功能描述:
MC68HC705J1ACDW 功能描述:IC MCU 4MHZ 1.2K OTP 20-SOIC RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:HC05 其它有關(guān)文件:STM32F101T8 View All Specifications 特色產(chǎn)品:STM32 32-bit Cortex MCUs 標(biāo)準(zhǔn)包裝:490 系列:STM32 F1 核心處理器:ARM? Cortex?-M3 芯體尺寸:32-位 速度:36MHz 連通性:I²C，IrDA，LIN，SPI，UART/USART 外圍設(shè)備:DMA，PDR，POR，PVD，PWM，溫度傳感器，WDT 輸入/輸出數(shù):26 程序存儲器容量:64KB（64K x 8） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:10K x 8 電壓 - 電源 (Vcc/Vdd):2 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 10x12b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:36-VFQFN，36-VFQFPN 包裝:托盤 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... 其它名稱:497-9032STM32F101T8U6-ND
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