STR710RZ STMicroelectronics, STR710RZ Datasheet - Page 72

• Manufacturer Part Number: STR710RZ
• Description: ARM7TDMI-S™ 32-BIT MCU with Flash, SMI, 3 std 16-bit timers, PWM timer, fast 10-bit ADC, I2C, UART, SSP, USB and CAN
• Manufacturer: STMicroelectronics

Specifications of STR710RZ

• 5 Power Saving Modes: SLOW, WAIT, LPWAIT, STOP and STANDBY modes
• Conversion Range: 0 to 2.5 V

Package characteristics
5.2
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Thermal characteristics
The average chip-junction temperature, T
following equation:
Where:
●
●
●
●
P
Most of the time for the application P
may be significant if the device is configured to drive continuously external modules and/or
memories.
An approximate relationship between P
Therefore (solving equations 1 and 2):
where:
K is a constant for the particular part, which may be determined from equation (3) by
measuring P
may be obtained by solving equations (1) and (2) iteratively for any value of T
Table 44.
Symbol
I/O
Θ
Θ
Θ
Θ
JA
JA
JA
JA
represents the Power Dissipation on Input and Output Pins;
T
Θ
P
P
A
D
INT
JA
is the Ambient Temperature in °C,
is the sum of P
is the Package Junction-to-Ambient Thermal Resistance, in °C/W,
Thermal Resistance Junction-Ambient
LQFP 144 - 20 x 20 mm / 0.5 mm pitch
Thermal Resistance Junction-Ambient
LQFP 64 - 10 x 10 mm / 0.5 mm pitch
Thermal Resistance Junction-Ambient
LFBGA 64 - 8 x 8 x 1.7mm
Thermal Resistance Junction-Ambient
LFBGA 144 - 10 x 10 x 1.7mm
is the product of I
D
Thermal characteristics
(at equilibrium) for a known T
INT
K = P
and P
DD
P
T
D
J
D
and V
= T
= K / (T
x (T
Parameter
I/O
A
A
(P
+ (P
DD
I/O
+ 273°C) + Θ
D
, expressed in Watts. This is the Chip Internal Power.
< P
J
D
= P
D
+ 273°C)
J
and T
INT
, in degrees Celsius, may be calculated using the
x Θ
INT
A.
and can be neglected. On the other hand, P
JA
Using this value of K, the values of P
+ P
J
)
(if P
I/O
JA
I/O
),
x P
is neglected) is given by:
D
2
(1)
(2)
(3)
Value
42
45
58
50
A
.
STR71xF
D
and T
°C/W
°C/W
°C/W
°C/W
Unit
I/O
J