參數(shù)資料
型號(hào): TMS570LS10216ASZWTQR
廠商: TEXAS INSTRUMENTS INC
元件分類: 微控制器/微處理器
英文描述: 32-BIT, FLASH, 160 MHz, RISC MICROCONTROLLER, PBGA337
封裝: GERRN, PLASTIC, NFBGA-337
文件頁(yè)數(shù): 68/102頁(yè)
文件大?。?/td> 1146K
代理商: TMS570LS10216ASZWTQR
PRODUCTPREVIEW
guaranteed fail
lower-
threshold
guaranteed pass
upper-
threshold
guaranteed fail
f[MHz]
1.5
5.0
20.0
50.0
SPNS141D – AUGUST 2010 – REVISED JANUARY 2011
www.ti.com
7.1.4
LPO And Clock Detection
The LPOCLKDET module consists of a clock monitor (CLKDET) and 2 low power oscillators (LPO) - a low
frequency (LF) and a high frequency (HF) oscillator. The CLKDET is a supervisor circuit for an externally
supplied clock signal. In case the externally supplied clock frequency falls out of a frequency window, the
clock detector flags this condition and switches to the HF LPO clock (limp mode). The OSCFAIL flag and
clock switch-over remain, regardless of the behavior of the oscillator clock signal. The only way OSCFAIL
can be cleared (and re-enable OSCIN as the clock source) is a power-on-reset.
Table 7-3. LPO And Clock Detection
Parameter
MIN
Type
MAX
Unit
Invalid frequency
lower threshold
1.5
5
MHz
upper threshold
20
50
MHz
Limp mode frequency (HFosc)
7.9
10
14.4
MHz
HFosc frequency
7.9
10
14.4
MHz
LFosc frequency
62
80
113
kHz
Figure 7-2. LPO And Clock Detection
68
Peripheral and Electrical Specifications
Copyright 2010–2011, Texas Instruments Incorporated
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