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參數(shù)資料
| 型號： | MPC5606SVLU6R |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 32-BIT, FLASH, 64 MHz, MICROCONTROLLER, PQFP176 |
| 封裝： | 24 X 24 MM, 1.40 MM HEIGHT, 0.50 MM PITCH, ROHS COMPLIANT, MS-026BGA, LQFP-176 |
| 文件頁數(shù)： | 108/136頁 |
| 文件大?。?/td> | 858K |
| 代理商： | MPC5606SVLU6R |
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MPC5606S Microcontroller Data Sheet, Rev. 7
Freescale Semiconductor
73
The HPREG has a “soft startup” profile which increases the supply in steps of approximately 50 mV in a series of approximately
25 steps. Therefore, the peak current is within 750 mA of the maximum current during startup. This eliminates any noise on the
VDDR supply during startup and charging of NPN emitter stability capacitance of 40
F (minimum).
Soft startup also occurs when waking up from standby mode to limit noise on the VDDR supply.
In case VDDR is shared between the device and the ballast, it must be star routed on the board or isolated as much as possible
to avoid any noise injected by the ballast. Soft startup will help to limit this noise but a VDDR capacitor close to the ballast pin
is critical here. A minimum capacitance of 10
F is needed.
Table 29 shows the typical and maximum startup currents.
3.7.6
HPREG load regulation characteristics
The HPREG exhibits a very strong load-regulation behavior (the transition from low- to high-current state is regulated quickly).
This is illustrated in Figure 12, which shows a 10–150 mA jump over 10 ns. Under any case of load transition, the HPREG
responds within 100 ns and stabilizes within 5
s. This helps improve the stability of the 1.2 V supply and settling time.
Figure 11. HPREG load regulation
3.8
I/O pad electrical characteristics
3.8.1
I/O pad types
The device provides five main I/O pad types:
Slow pads — These are the most common pads, providing a good compromise between transition time and low
electromagnetic emission.
Medium pads — These are provided in two types (M1 and M2) and provide transitions fast enough for the serial
communication channels. M2 pads include slew rate control.
Table 29. Startup current
Symbol
C
Parameter
Value
Unit
Typ
Max
ISTART
CC
T Startup current
300
800
mA
1.2 V supply
Base control
3 V input supply
Load
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