参数资料
型号: AT91SAM9260-EK
厂商: Atmel
文件页数: 6/45页
文件大小: 0K
描述: KIT EVAL FOR AT91SAM9260
产品培训模块: MCU Product Line Introduction
标准包装: 1
系列: AT91SAM 智能 ARM
类型: MCU
适用于相关产品: AT91SAM9260
所含物品: 评估板、并行缆线和光盘
相关产品: 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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