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MPC5604B bảng dữ liệu(PDF) 55 Page - Freescale Semiconductor, Inc

tên linh kiện MPC5604B
Giải thích chi tiết về linh kiện  32-bit MCU family built on the Power Architecture for automotive
PDF  106 Pages
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nhà sản xuất  FREESCALE [Freescale Semiconductor, Inc]
Trang chủ  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MPC5604B bảng dữ liệu(HTML) 55 Page - Freescale Semiconductor, Inc

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Electrical characteristics
MPC5604B/C Microcontroller Data Sheet, Rev. 8
Freescale Semiconductor
55
4.9.2
Voltage monitor electrical characteristics
The device implements a Power-on Reset (POR) module to ensure correct power-up initialization, as well as four low voltage
detectors (LVDs) to monitor the VDD and the VDD_LV voltage while device is supplied:
•
POR monitors VDD during the power-up phase to ensure device is maintained in a safe reset state
•
LVDHV3 monitors VDD to ensure device reset below minimum functional supply
•
LVDHV5 monitors VDD when application uses device in the 5.0 V ± 10% range
•
LVDLVCOR monitors power domain No. 1
•
LVDLVBKP monitors power domain No. 0
NOTE
When enabled, power domain No. 2 is monitored through LVD_DIGBKP.
Figure 11. Low voltage monitor vs reset
4 External regulator and capacitance circuitry must be capable of providing I
DD_BV while maintaining supply VDD_BV
in operating range.
5 In-rush current is seen only for short time during power-up and on standby exit (max 20 µs, depending on external
LV capacitances to be load)
6 The duration of the in-rush current depends on the capacitance placed on LV pins. BV decaps must be sized
accordingly. Refer to IMREG value for minimum amount of current to be provided in cc.
VDD
VLVDHVxH
RESET
VLVDHVxL



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