参数资料
型号: MC33742DW
厂商: Freescale Semiconductor
文件页数: 55/71页
文件大小: 0K
描述: IC SYSTEM BASE W/LIN 28-SOIC
标准包装: 26
应用: 自动
接口: SPI
电源电压: 5.5 V ~ 18 V
封装/外壳: 28-SOIC(0.295",7.50mm 宽)
供应商设备封装: 28-SOIC W
包装: 管件
安装类型: 表面贴装
配用: KIT33742DWEVB-ND - KIT FOR 33742 SBC WITH EHSCAN
Analog Integrated Circuit Device Data
Freescale Semiconductor
59
33742
TYPICAL APPLICATIONS
Figure 33. Power up sequence, No W/D write at first
POWER UP AND VDD GOING LOW WITH STOP MODE AS DEFAULT LOW POWER MODE IS SELECTED
The first part of Figure 34 is identical to Figure 33. If VDD is pulled below VDD under-voltage reset (typ 4.6 V), say by an over-
current or short-circuit (for instance, short to 4.0 V), and if a low power mode previously selected was Stop mode, the 33742
enters Reset mode (RST pin is active). The WDOG pin stays HIGH, but the high level (Voh) follows V1 level. The INT pin goes
LOW.
When the VDD overload condition is removed, the 33742 restarts in Normal Request mode.
Figure 34. Under-voltage on VDD
VDD
SPI (CS)
WD
RST
INT
SBC in
Reset
mode
350ms
SBC in Normal Request
& Reset modes
Reset each 350 ms
SBC in Normal
mode
SBC in Normal
Request & Reset
mode
Watchdog Refresh
Missing Watchdog Refresh
Watchdog
Refresh
VDD
SPI (CS)
WD
RST
INT
SBC in
Reset
mode
SBC in Normal Request
& Reset modes
Reset each 350 ms
SBC in Normal
mode
SBC in Normal
Reset mode
350 ms
Watchdog Refresh
Under-voltage at VDD (VDD < VRSTTH)
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