參數(shù)資料
型號: LH79533
英文描述: ARM RISC CORE ASSPs ARM7TDMI
中文描述: ARM的RISC核心專用標(biāo)準(zhǔn)的ARM7TDMI
文件頁數(shù): 26/39頁
文件大?。?/td> 296K
代理商: LH79533
LH79520
System-on-Chip
26
8/21/02
Preliminary Data Sheet
EXTERNAL CLOCKS
Table 7. External Clocks AC Specifications
NOTE:
PCLK is the period chosen for the internal peripheral
clock domain.
SYMBOL
DESCRIPTION
MIN.
UNIT
tCLKIN
tCLKINH
tCLKINL
tSSPCLK
tSSPCLKH
tSSPCLKL
tUCLK
tUCLKH
tUCLKL
CLKIN Period
CLKIN HIGH Time
CLKIN LOW TIme
SSPCLK Period
SSPCLK HIGH Time
SSPCLK LOW Time
UCLK
UCLK HIGH Time
UCLK LOW Time
6.66
2.8
2.8
1
0.4
0.4
1
0.4
0.4
ns
ns
ns
PCLK
PCLK
PCLK
PCLK
PCLK
PCLK
Figure 8. External Clock AC Timing
tCLKINL
tCLKIN
tCLKINH
79520-57
Figure 9. Synchronous Serial I/F Clocks AC Timing
Figure 10. External UARTs/SIR Clock AC Timing
tSSPCLK
tSSPCLKL
79520-58
tSSPCLKH
79520-59
tUCLKH
tUCLK
tUCLKL
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