- 您現在的位置：買賣IC網 > PDF目錄369230 > 68HC05J5A (Motorola, Inc.) 8-Bit Microcontroller Units (MCU).(8位微控制器) PDF資料下載
參數資料
| 型號： | 68HC05J5A |
| 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： | 42/106頁 |
| 文件大小： | 1069K |
| 代理商： | 68HC05J5A |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁當前第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁
GENERAL RELEASE SPECIFICATION
July 16, 1999
MOTOROLA
6-4
LOW POWER MODES
MC68HC05J5A
REV 2.1
after a varied delay time which is from one to 224 or 4064 internal processor clock
cycles (the POR delay time). The HALT Mode is not intended for normal use, but
is provided to keep the COP Watchdog Timer active should the STOP instruction
opcode be inadvertently executed.
6.2
WAIT INSTRUCTION
The WAIT instruction places the MCU in a low-power mode, which consumes
more power than the STOP Mode. In the WAIT Mode the internal processor clock
is halted, suspending all processor and internal bus activity. Internal timer clocks
remain active, permitting interrupts to be generated from the timer or a reset to be
generated from the COP Watchdog Timer. Execution of the WAIT instruction auto-
matically clears the I-bit in the Condition Code Register and sets the IRQE enable
bit in the IRQ Control/Status Register so that the IRQ external interrupt is enabled.
All other registers, memory, and input/output lines remain in their previous states.
If timer (MFT or Timer 1) interrupts are enabled, a TIMER interrupt will cause the
processor to exit the WAIT Mode and resume normal operation. The Timer may be
used to generate a periodic exit from the WAIT Mode. The WAIT Mode may also
be exited when an external IRQ or an LVR reset or an external RESET occurs.
6.3
DATA-RETENTION MODE
If the LVR mask option is selected and since LVR kicks in whenever V
DD
is below
the specified LVR trigger voltage which is higher than that required of the Data
Retention mode, the Data Retention mode will not exist. Data Retention Mode is
only meaningful if LVR mask option is not selected.
The contents of RAM and CPU registers are retained at supply voltage as low as
2.0 VDC. This is called the data-retention mode where the data is held, but the
device is not guaranteed to operate. The RESET pin must be held low during
data-retention mode.
6.4
COP WATCHDOG TIMER CONSIDERATIONS
The COP Watchdog Timer is active in all modes of operation if enabled by a mask
option. Thus, emulation of applications that do not service the COP should only be
done with devices that have the COP Mask Option disabled.
If the COP Watchdog Timer is selected by the mask option, any execution of the
STOP instruction (either intentional or inadvertent due to the CPU being dis-
turbed) will cause the oscillator to halt and prevent the COP Watchdog Timer from
timing out unless the STOP to HALT conversion feature is enabled. Therefore, it is
recommended that the STOP instruction should be converted to a HALT instruc-
tion if the COP Watchdog Timer is enabled.
If the COP Watchdog Timer is selected by the mask option, the COP will reset the
MCU when it times out. Therefore, it is recommended that the COP Watchdog
should be disabled for a system that must have intentional uses of the WAIT Mode
for periods longer than the COP time-out period.
相關PDF資料 |
PDF描述 |
|---|---|
| 68HC705J5A | 8-Bit Microcontroller Units (MCU).(8位微控制器) |
| 68HRC05J5A | 8-Bit Microcontroller Units (MCU).(8位微控制器) |
| 68HRC705J5A | 8-Bit Microcontroller Units (MCU).(8位微控制器) |
| 68HC05K0 | 8-Bit Microcontroller Units (MCU).(8位微控制器) |
| 68HC05PL4 | 8-Bit Microcontroller Units (MCU).(8位微控制器) |
相關代理商/技術參數 |
參數描述 |
|---|---|
| 68HC05JB3 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:8-bit microcontroller units (MCUs) |
| 68HC05JB4 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:68HC05JB4 |
| 68HC05K3DW | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Microcontroller |
| 68HC05K3P | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Microcontroller |
| 68HC05L5 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:General Release Specification |
發布緊急采購，3分鐘左右您將得到回復。