參數(shù)資料
型號: MC68HC705C9ACFB
廠商: Freescale Semiconductor
文件頁數(shù): 72/118頁
文件大?。?/td> 0K
描述: IC MCU 16K 2.1MHZ OTP 44-QFP
標(biāo)準(zhǔn)包裝: 96
系列: HC05
核心處理器: HC05
芯體尺寸: 8-位
速度: 2.1MHz
連通性: SCI,SPI
外圍設(shè)備: POR,WDT
輸入/輸出數(shù): 24
程序存儲器容量: 16KB(16K x 8)
程序存儲器類型: OTP
RAM 容量: 352 x 8
電壓 - 電源 (Vcc/Vdd): 3 V ~ 5.5 V
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 44-QFP
包裝: 托盤
Timer During Wait Mode
MC68HC05C9A Advance Information Data Sheet, Rev. 4.1
Freescale Semiconductor
57
To prevent OCF from being set between the time it is read and the time the output compare registers are
updated, use this procedure:
1.
Disable interrupts by setting the I bit in the condition code register.
2.
Write to OCRH. Compares are now inhibited until OCRL is written.
3.
Clear bit OCF by reading timer status register (TSR).
4.
Enable the output compare function by writing to OCRL.
5.
Enable interrupts by clearing the I bit in the condition code register.
8.4 Timer During Wait Mode
The CPU clock halts during the wait mode, but the timer remains active. If interrupts are enabled, a timer
interrupt will cause the processor to exit the wait mode.
8.5 Timer During Stop Mode
In the stop mode, the timer stops counting and holds the last count value if STOP is exited by an interrupt.
If STOP is exited by reset, the counters are forced to $FFFC. During STOP, if at least one valid input
capture edge occurs at the TCAP pins, the input capture detect circuit is armed. This does not set any
timer flags or wake up the MCU, but if an interrupt is used to exit stop mode, 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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MC68HC705C9ACPE 制造商:Freescale Semiconductor 功能描述: