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| 型号： | MPC5604PEF0VLL4 |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQFP100 |
| 封装： | 14 X 14 MM, 1.40 MM HEIGHT, 0.50 MM PITCH, ROHS COMPLIANT LQFP-100 |
| 文件页数： | 47/99页 |
| 文件大小： | 1130K |
| 代理商： | MPC5604PEF0VLL4 |
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MPC5604P Microcontroller Data Sheet, Rev. 7
Freescale Semiconductor
51
3.8.2
Voltage monitor electrical characteristics
The device implements a Power-on Reset module to ensure correct power-up initialization, as well as three low voltage
detectors 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 5.0V ± 10% range
LVDLVCOR monitors low voltage digital power domain
3.9
Power up/down sequencing
To prevent an overstress event or a malfunction within and outside the device, the MPC5604P implements the following
sequence to ensure each module is started only when all conditions for switching it ON are available:
A POWER_ON module working on voltage regulator supply controls the correct start-up of the regulator. This is a
key module ensuring safe configuration for all voltage regulator functionality when supply is below 1.5V. Associated
POWER_ON (or POR) signal is active low.
Several low voltage detectors, working on voltage regulator supply monitor the voltage of the critical modules (voltage
regulator, I/Os, flash memory and low voltage domain). LVDs are gated low when POWER_ON is active.
A POWER_OK signal is generated when all critical supplies monitored by the LVD are available. This signal is active
high and released to all modules including I/Os, flash memory and RC16 oscillator needed during power-up phase and
reset phase. When POWER_OK is low the associated module are set into a safe state.
Table 16. Low voltage monitor electrical characteristics
Symbol
C
Parameter
Conditions1
1 V
DD = 3.3V ± 10% / 5.0V ± 10%, TA = –40 °C to TA MAX, unless otherwise specified
Value
Unit
Min
Max
VPORH
T
Power-on reset threshold
—
1.5
2.7
V
VPORUP
P
Supply for functional POR module
TA = 25 °C
1.0
—
V
VREGLVDMOK_H
P
Regulator low voltage detector high threshold
—
2.95
V
VREGLVDMOK_L
P
Regulator low voltage detector low threshold
—
2.6
—
V
VFLLVDMOK_H
P
Flash low voltage detector high threshold
—
2.95
V
VFLLVDMOK_L
P
Flash low voltage detector low threshold
—
2.6
—
V
VIOLVDMOK_H
P
I/O low voltage detector high threshold
—
2.95
V
VIOLVDMOK_L
P
I/O low voltage detector low threshold
—
2.6
—
V
VIOLVDM5OK_H
P
I/O 5V low voltage detector high threshold
—
4.4
V
VIOLVDM5OK_L
P
I/O 5V low voltage detector low threshold
—
3.8
—
V
VMLVDDOK_H
P
Digital supply low voltage detector high
—
1.145
V
VMLVDDOK_L
P
Digital supply low voltage detector low
—
1.08
—
V
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