STR736FV2T7 STMicroelectronics, STR736FV2T7 Datasheet - Page 48

• Manufacturer Part Number: STR736FV2T7
• Description: IC MCU ARM7 256K FLASH 100-TQFP
• Manufacturer: STMicroelectronics
• Series: STR7r

Specifications of STR736FV2T7

• Core Processor: ARM7
• Core Size: 32-Bit
• Speed: 36MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 72
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 100-TQFP, 100-VQFP
• For Use With: 497-5046 - KIT TOOL FOR ST7/UPSD/STR7 MCU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Other names: 497-5146-2

Package characteristics
5.2
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Thermal characteristics
The average chip-junction temperature, T
following equation:
Where:
Most of the time for the applications P
P
and/or memories.
An approximate relationship between P
Therefore (solving equations 1 and 2):
Where:
Table 28.
I/O
Symbol
may be significant if the device is configured to drive continuously external modules
Θ
–
–
–
–
–
–
JA
T
P
K = P
J
D
T
Θ
P
P
power,
P
K is a constant for the particular part, which may be determined from equation (3)
by measuring P
of P
value of T
= T
A
= K / (T
D
INT
I/O
JA
is the ambient temperature in °C,
Thermal characteristics
D
is the sum of P
Thermal resistance junction-ambient
A
D
is the package junction-to-ambient thermal resistance, in °C/W,
represents the power dissipation on input and output pins; user determined.
is the product of I
x (T
+ (P
and T
J
A
A
D
+ 273°C)
+ 273°C) + Θ
x Θ
J
may be obtained by solving equations (1) and (2) iteratively for any
JA
Description
D
)
(at equilibrium) for a known T
INT
and P
DD
JA
and V
x P
I/O
I/O
D
D
(P
< P
DD
2
J
and T
, in degrees Celsius, may be calculated using the
D
, expressed in Watts. This is the chip internal
INT
= P
J
and may be neglected. On the other hand,
INT
(if P
LFBGA144
TQFP144
TQFP100
Package
+ P
I/O
I/O
(1)
is neglected) is given by:
(2)
(3)
A.
),
Using this value of K, the values
Value (typical)
50
40
40
STR73xFxx
°C/W
Unit