参数资料
型号: ST40RA150XH6
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 150 MHz, RISC PROCESSOR, PBGA372
封装: 27 X 27 MM, BGA-372
文件页数: 50/90页
文件大小: 672K
代理商: ST40RA150XH6
54/88
ST40RA166
6 Electrical specifications
6.10
Low power CLKIN AC specifications
The timings referenced in
Figure 17 refer to the case where CLKIN is directly clocked from an
external source. In this case care should be taken that the total load on the LPCLKOSC output is
<2pF. .
Symbol
Parameter
Min
Nom
Max
Units
Notes
tLCLLCL
LPCLKIN
period
32
kHz
a, b
a. Measured between corresponding points on consecutive falling edges.
b. Variation of individual falling edges from their nominal times.
LPCLKIN
duty cycle
10
50
90
%
tLCr
LPCLKIN
rise time
10
ns
c, d
c. When driven by an external clock.
d. Transitions must be monotonic within the range VIH to VIL
tLCf
LPCLKIN
fall time
10
ns
3, 4
Table 30: LPCLKIN timings
Figure 17: CLKIN timings
VDDRTC * 0.8
VDDRTC * 0.2
tLCLLCL
90%
10%
tLCf
90%
10%
tLCr
VDDRTC * 0.5
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