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參數資料
型號: MC68HCL05C8A
廠商: Motorola, Inc.
英文描述: 8-Bit Microcontroller Units (MCU).(8位微控制器)
中文描述: 8位微控制器單元(MCU)。(8位微控制器)
文件頁數: 61/156頁
文件大小: 755K
代理商: MC68HCL05C8A
Timer
Timer During Wait Mode
MC68HC05C8A
Rev. 3.0
General Release Specification
MOTOROLA
Timer
61
L
G
R
A problem can occur when using the timer overflow function and reading
the free-running counter at random times to measure an elapsed time.
Without incorporating the proper precautions into software, the timer
overflow flag could unintentionally be cleared if:
1.
The timer status register is read or written when TOF is set.
2.
The LSB of the free-running counter is read but not for the purpose
of servicing the flag.
The counter alternate register at addresses $1A and $1B contains the
same value as the free-running counter (at address $18 and $19);
therefore, this alternate register can be read at any time without affecting
the timer overflow flag in the timer status register.
8.8 Timer During Wait Mode
The CPU clock halts during wait mode, the timer remains active. If
interrupts are enabled, a timer interrupt will cause the processor to exit
the wait mode.
8.9 Timer During Stop Mode
In stop mode, the timer stops counting and holds the last count value if
stop is exited by an interrupt. If reset is used, the counter is forced to
$FFFC. During stop, if at least one valid input capture edge occurs at the
TCAP pin, the input capture detect circuit is armed. This does not set any
timer flags or wake up the MCU. But if the MCU exits stop due to an
external interrupt, there is an active input capture flag and data from the
first valid edge that occurred during the stop mode. If reset is used to exit
stop mode, then no input capture flag or data remains, even if a valid
input capture edge occurred.
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參數描述
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MC68HCP11E0FN 功能描述:MICROCONTROLLER MCU 8ADC 3MHC RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:HC11 標準包裝:250 系列:56F8xxx 核心處理器:56800E 芯體尺寸:16-位 速度:60MHz 連通性:CAN,SCI,SPI 外圍設備:POR,PWM,溫度傳感器,WDT 輸入/輸出數:21 程序存儲器容量:40KB(20K x 16) 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:6K x 16 電壓 - 電源 (Vcc/Vdd):2.25 V ~ 3.6 V 數據轉換器:A/D 6x12b 振蕩器型:內部 工作溫度:-40°C ~ 125°C 封裝/外殼:48-LQFP 包裝:托盤 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323
MC68HCP11E0FNE 功能描述:8位微控制器 -MCU 8B MCU 512RAM COP A/D RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 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 安裝風格:SMD/SMT
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