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MCF51JU128VHS bảng dữ liệu(PDF) 10 Page - Freescale Semiconductor, Inc

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MCF51JU128VHS bảng dữ liệu(HTML) 10 Page - Freescale Semiconductor, Inc

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Symbol
Description
Value
Unit
VDD
3.3 V supply voltage
3.3
V
Nonswitching electrical specifications
5.2.1 Voltage and Current Operating Requirements
Table 1. Voltage and current operating requirements
Symbol
Description
Min.
Max.
Unit
Notes
VDD
Supply voltage
1.71
3.6
V
VDDA
Analog supply voltage
1.71
3.6
V
VDD – VDDA VDD-to-VDDA differential voltage
–0.1
0.1
V
VSS – VSSA VSS-to-VSSA differential voltage
–0.1
0.1
V
VIH
Input high voltage
• 2.7 V ≤ VDD ≤ 3.6 V
• 1.7 V ≤ VDD ≤ 2.7 V
0.7 × VDD
0.75 × VDD
V
V
1
VIL
Input low voltage
• 2.7 V ≤ VDD ≤ 3.6 V
• 1.7 V ≤ VDD ≤ 2.7 V
0.35 × VDD
0.3 × VDD
V
V
2
IIC
DC injection current — single pin
• VIN > VDD
• VIN < VSS
0
0
2
–0.2
mA
mA
3
DC injection current — total MCU limit, includes sum
of all stressed pins
• VIN > VDD
• VIN < VSS
0
0
25
–5
mA
mA
3
VRAM
VDD voltage required to retain RAM
1.2
V
1. The device always interprets an input as a 1 when the input is greater than or equal to VIH (min.) and less than or equal to
VIH (max.), regardless of whether input hysteresis is turned on.
2. The device always interprets an input as a 0 when the input is less than or equal to VIL (max.) and greater than or equal to
VIL (min.), regardless of whether input hysteresis is turned on.
3. All functional non-supply pins are internally clamped to VSS and VDD. Input must be current limited to the value specified.
To determine the value of the required current-limiting resistor, calculate resistance values for positive and negative clamp
voltages, then use the larger of the two values. Power supply must maintain regulation within operating VDD range during
instantaneous and operating maximum current conditions. If positive injection current (VIn > VDD) is greater than IDD, the
injection current may flow out of VDD and could result in external power supply going out of regulation. Ensure external
VDD load will shunt current greater than maximum injection current. This will be the greatest risk when the MCU is not
consuming power. Examples are: if no system clock is present, or if clock rate is very low (which would reduce overall
power consumption).
5.2
Nonswitching electrical specifications
MCF51JU128 Data Sheet, Rev. 4, 01/2012.
10
Freescale Semiconductor, Inc.


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