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RA4M2 датащи(PDF) 29 Page - Renesas Technology Corp

номер детали RA4M2
подробное описание детали  Leading-performance 100 MHz Arm Cortex-M33 core, up to 512 KB code flash memory with background operation, 8 KB Data flash memory, and 128 KB SRAM with Parity/ECC.
PDF  92 Pages
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производитель  RENESAS [Renesas Technology Corp]
домашняя страница  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

RA4M2 датащи(HTML) 29 Page - Renesas Technology Corp

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Vr(VCC)
VCC
1 / fr(VCC)
Figure 2.6
Ripple waveform
2.2.7
Thermal Characteristics
Maximum value of junction temperature (Tj) must not exceed the value of “section 2.2.1. Tj/Ta Definition”.
Tj is calculated by either of the following equations.
● Tj = Ta + θja × Total power consumption
● Tj = Tt + Ψjt × Total power consumption
– Tj : Junction Temperature (°C)
– Ta : Ambient Temperature (°C)
– Tt : Top Center Case Temperature (°C)
– θja : Thermal Resistance of “Junction”-to-“Ambient” (°C/W)
– Ψjt : Thermal Resistance of “Junction”-to-“Top Center Case” (°C/W)
● Total power consumption = Voltage × (Leakage current + Dynamic current)
● Leakage current of IO = Σ (IOL × VOL) /Voltage + Σ (|IOH| × |VCC – VOH|) /Voltage
● Dynamic current of IO = Σ IO (Cin + Cload) × IO switching frequency × Voltage
– Cin: Input capacitance
– Cload: Output capacitance
Regarding θja and Ψjt, refer to Table 2.11.
Table 2.11
Thermal Resistance
Parameter
Package
Symbol
Value*1
Unit
Test conditions
Thermal
Resistance
48-pin QFN (PWQN0048KC-A)
θja
23.9
°C/W
JESD 51-2 and 51-7
compliant
48-pin LQFP (PLQP0048KB-B)
62.1
64-pin LQFP (PLQP0064KB-C)
54.6
100-pin LQFP (PLQP0100KB-B)
55.1
48-pin QFN (PWQN0048KC-A)
Ψjt
0.28
°C/W
JESD 51-2 and 51-7
compliant
48-pin LQFP (PLQP0048KB-B)
2.39
64-pin LQFP (PLQP0064KB-C)
1.90
100-pin LQFP (PLQP0100KB-B)
1.90
Note 1. The values are reference values when the 4-layer board is used. Thermal resistance depends on the number of layers or size of the
board. For details, refer to the JEDEC standards.
2.2.7.1
Calculation guide of ICCmax
RA4M2 Datasheet
2. Electrical Characteristics
R01DS0367EJ0110 Rev.1.10
Jan 27, 2021
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