參數(shù)資料
型號(hào)： MC33976
廠商： 飛思卡爾半導(dǎo)體(中國(guó))有限公司
英文描述： Dual Gauge Driver with Configurable Response Time(帶可設(shè)置響應(yīng)時(shí)間的雙標(biāo)尺驅(qū)動(dòng)器)
中文描述： 雙計(jì)驅(qū)動(dòng)器，可配置的響應(yīng)時(shí)間（帶可設(shè)置響應(yīng)時(shí)間的雙標(biāo)尺驅(qū)動(dòng)器）
文件頁(yè)數(shù)： 33/40頁(yè)
文件大?。?/td> 5332K
代理商： MC33976
Analog Integrated Circuit Device Data
Freescale Semiconductor
33
33976
FUNCTIONAL DEVICE OPERATION
STATE MACHINE
OVERVOLTAGE FAULT REQUIREMENTS
The device is capable of surviving V
PWR
voltages within
the maximum specified in
Maximum Ratings
table, page
4
.
V
PWR
levels resulting in an Overvoltage Shutdown condition
can result in uncertain pointer positions. Therefore, the
pointer position should be re-calibrated. The master will be
notified of an overvoltage event via the SO pin if the device
status is selected. Overvoltage detection and notification
occurs regardless of whether the gauge(s) are enabled or
disabled.
Overcurrent Fault Requirements
Output currents are limited to safe levels allowing the
device to rely on thermal shutdown to protect itself.
Undervoltage Fault Requirements
Undervoltage V
PWR
conditions may result in uncertain
pointer positions. Therefore, the internal clock and the pointer
position may require re-calibration. The state machine
continues with V
PWR
voltage levels as low as 4.0 V; however,
the coil voltages may be clipped. The master can be notified
of an undervoltage event via the SO pin.
RESET (SLEEP MODE)
The device can reset internally or externally. If the V
DD
level falls below the V
DDUV
level (refer to the Static Electrical
Characteristics table under
POWER INPUT
, page
5
), the
device resets and powers up in the Default mode. Similarly,
If the
RST
pin is driven to a logic [0], the device resets to its
default state. The device consumes the least amount of
current (I
DD
and I
PWR
) when the
RST
pin is logic [0]. This is
also referred to as the Sleep mode.
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