參數(shù)資料
型號: MC33976
廠商: 飛思卡爾半導(dǎo)體(中國)有限公司
英文描述: Dual Gauge Driver with Configurable Response Time(帶可設(shè)置響應(yīng)時間的雙標尺驅(qū)動器)
中文描述: 雙計驅(qū)動器,可配置的響應(yīng)時間(帶可設(shè)置響應(yīng)時間的雙標尺驅(qū)動器)
文件頁數(shù): 34/40頁
文件大小: 5332K
代理商: MC33976
Analog Integrated Circuit Device Data
Freescale Semiconductor
34
33976
TYPICAL APPLICATIONS
STATE MACHINE
TYPICAL APPLICATIONS
The 33976 is an extremely versatile device that can be
used in a variety of applications. The flexibility has been
significantly improved, over that of the older MC33991 and
MC33970 devices, with the addition of the Velocity Ramp
configuration features that are available in the RMPSEL
register (see
Table 31
). Some applications (e.g., high
performance tachometers) require responsive pointers that
change directions quickly. Figure 10 shows some
characteristics of the ramp modifications that are possible
with the RMPSELR RS bit.
Figure 12. Start Stop Response Characteristics
Other applications (e.g., speedometers and fuel
indicators) require smooth, low speed movement. For these
applications, the damping of the pointer can be optimized
with the HC and HCP bits of the RMPSELR.
Figure 13
,
page
35
, gives several examples of different damping
characteristics that are possible with the device. Once
configured, the damping can be dynamically enabled and
disabled using the HE bits of the Position registers.
0.0
1000.0
2000.0
3000.0
4000.0
5000.0
6000.0
0
20000
40000
60000
80000
100000
120000
140000
160000
180000
Time (
μ
s)
S
GDIC MC33991
GDIC MC33970 or MC33976 default
Ideal Acceleration (4500 deg/s^2)
GDIC MC33976 ramp w/first step = 5
Ideal Acceleration
(4500 deg/s^2)
33991
33970
or
33976
Default
13ms
63ms
33976 (RS = 4)
33991
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