參數(shù)資料
型號： DEMO56F8014-EE
廠商： Freescale Semiconductor
文件頁數(shù)： 123/124頁
文件大?。?/td> 0K
描述： BOARD DEMO FOR 56F8014
標(biāo)準(zhǔn)包裝： 1
類型： MCU
適用于相關(guān)產(chǎn)品： 56F8014
所含物品： 板，線纜，CD，電源
配用： APMOTOR56F8000E-ND - KIT DEMO MOTOR CTRL SYSTEM
相關(guān)產(chǎn)品： MC56F8014VFAE-ND - IC DIGITAL SIGNAL CTRLR 32-LQFP
56F8014 Technical Data, Rev. 11
98
Freescale Semiconductor
10.2.1
Voltage Regulator Specifications
The 56F8014 has two on-chip regulators. One supplies the PLL and relaxation oscillator. It has no external
pins and therefore has no external characteristics which must be guaranteed (other than proper operation
of the device). The second regulator supplies approximately 2.5 V to the 56F8014’s core logic. This
regulator requires an external 2.2
μF, or greater, capacitor for proper operation. Ceramic and tantalum
capacitors tend to provide better performance tolerances. The output voltage can be measured directly on
the VCAP pin. The specifications for this regulator are shown in Table 10-8.
10.3 AC Electrical Characteristics
Tests are conducted using the input levels specified in Table 10-5. Unless otherwise specified,
propagation delays are measured from the 50% to the 50% point, and rise and fall times are measured
between the 10% and 90% points, as shown in Figure 10-2.
Table 10-7 Power-On Reset Low-Voltage Parameters
Characteristic
Symbol
Min
Typ
Max
Unit
Low-Voltage Interrupt for 3.3V supply1
1. When VDD drops below VEI3.3, an interrupt is generated.
VEI3.3
2.60
2.7
—
V
Low-Voltage Interrupt for 2.5V supply2
2. When VDD drops below VEI32.5, an interrupt is generated.
VE12.5
2.05
2.15
—
V
Low-Voltage Interrupt Recovery Hysteresis
VEIH
—50
—
mV
Power-On Reset3
3. Power-On Reset occurs whenever the internally regulated 2.5V digital supply drops below 1.8V. While
power is ramping up, this signal remains active for as long as the internal 2.5V is below 2.15V or the 3.3V
1/O voltage is below 2.7V, no matter how long the ramp-up rate is. The internally regulated voltage is
typically 100mV less than VDD during ramp-up until 2.5V is reached, at which time it self-regulates.
POR
—
1.8
1.9
V
Table 10-8. Regulator Parameters
Characteristic
Symbol
Min
Typical
Max
Unit
Input Voltage
VIN
3.0
—
3.6
V
Output Voltage
VOUT
2.25
2.5
2.75
V
Short Circuit Current
ISS
—
450
650
mA
Short Circuit Tolerance
(output shorted to ground)
TRSC
—
30
Minutes
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