參數(shù)資料
型號: AT91SAM9260-EK
廠商: Atmel
文件頁數(shù): 6/45頁
文件大?。?/td> 0K
描述: KIT EVAL FOR AT91SAM9260
產(chǎn)品培訓模塊: MCU Product Line Introduction
標準包裝: 1
系列: AT91SAM 智能 ARM
類型: MCU
適用于相關產(chǎn)品: AT91SAM9260
所含物品: 評估板、并行纜線和光盤
相關產(chǎn)品: AT91SAM9260B-CU-999-ND - IC MCU ARM9 217LFBGA
AT91SAM9260B-QU-ND - IC ARM9 MCU 208-PQFP
AT91SAM9260B-CU-ND - IC ARM9 MCU 217-LFBGA
14
SAM9260 [SUMMARY]
6221LS–ATARM–15-Oct-12
6.7
Slow Clock Selection
The SAM9260 slow clock can be generated either by an external 32,768 Hz crystal or the on-chip RC oscillator.
Table 6-1 defines the states for OSCSEL signal.
The startup counter delay for the slow clock oscillator depends on the OSCSEL signal. The 32,768 Hz startup delay is
1200 ms whereas it is 240 s for the internal RC oscillator (refer to Table 6-1). The pin OSCSEL must be tied either to
GND or VDDBU for correct operation of the device.
Table 6-1.
Slow Clock Selection
OSCSEL
Slow Clock
Startup Time
0
Internal RC
240 s
1
External 32768 Hz
1200 ms
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