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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: 42/156頁
文件大小: 755K
代理商: MC68HCL05C8A
L
G
R
Resets
General Release Specification
MC68HC05C8A
Rev. 3.0
42
Resets
MOTOROLA
5.3 Power-On Reset (POR)
An internal reset is generated on power-up to allow the internal clock
generator to stabilize. The power-on reset is strictly for power turn-on
conditions and should not be used to detect a drop in the power supply
voltage. There is a 4064 internal processor clock cycle (t
cyc
) oscillator
stabilization delay after the oscillator becomes active. If the RESET pin
is low after the end of this 4064-cycle delay, the MCU will remain in the
reset condition until RESET goes high.
For additional information, refer to
Figure 13-8. Power-On Reset
Timing Diagram
.
5.4 RESET Pin
The MCU is reset when a logic 0 is applied to the RESET input for a
period of one and one-half machine cycles (t
RL
).
5.5 Computer Operating Properly (COP) Reset
This device includes a watchdog COP feature as a mask option. The
COP is implemented with an 18-bit ripple counter. This provides a
timeout period of 64 milliseconds at a bus rate of 2 MHz. If the COP
should time out, a system reset will occur and the device will be
re-initialized in the same fashion as a POR or external reset.
5.5.1 Resetting the COP
Preventing a COP reset is done by writing a logic 0 to the COPC bit. This
action will reset the counter and begin the timeout period again. The
COPC bit is bit 0 of address $1FF0. A read of address $1FF0 will result
in the user defined ROM data at that location.
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參數描述
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MC68HCP11A1FN 制造商:MOTORALA 功能描述:
MC68HCP11E0CP2 制造商:Rochester Electronics LLC 功能描述:- Bulk
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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