STM32F102RB STMicroelectronics, STM32F102RB Datasheet - Page 66

• Manufacturer Part Number: STM32F102RB
• Description: Mainstream USB Access line, ARM Cortex-M3 MCU with 128 Kbytes Flash, 48 MHz CPU, USB FS
• Manufacturer: STMicroelectronics

Specifications of STM32F102RB

• Core: ARM 32-bit Cortex™-M3 CPU
• Peripherals Supported: timers, ADC, SPIs, I2Cs and USARTs
• Conversion Range: 0 to 3.6 V
• Systick Timer: 24-bit downcounter

Package characteristics
6.3.1
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Evaluating the maximum junction temperature for an application
When ordering the microcontroller, the temperature range is specified in the ordering
information scheme shown in
Each temperature range suffix corresponds to a specific guaranteed ambient temperature at
maximum dissipation and, to a specific maximum junction temperature. Here, only
temperature range 6 is available (–40 to 85 °C).
The following example shows how to calculate the temperature range needed for a given
application, making it possible to check whether the required temperature range is
compatible with the STM32F102xx junction temperature range.
Example: High-performance application
Assuming the following application conditions:
Thus: P
Using the values obtained in
This is within the junction temperature range of the STM32F102xx (–40 < T
Figure 34. LQFP64 P
Maximum ambient temperature T
I
level with I
mode at low level with I
P
P
This gives: P
P
–
T
DDmax
Jmax
INTmax
IOmax
Dmax
Dmax
For LQFP64, 45 °C/W
= 82 °C + (45 °C/W × 447 mW) = 82 °C + 20.1 °C = 102.1 °C
= 175 + 272 = 447 mW
= 50 mA, V
= 20 × 8 mA × 0.4 V + 8 × 20 mA × 1.3 V = 272 mW
= 447 mW
= 50 mA × 3.5 V= 175 mW
700
600
500
400
300
200
100
OL
0
INTmax
= 8 mA, V
65
DD
D
= 175 mW and P
max vs. T
= 3.5 V, maximum 20 I/Os used at the same time in output at low
75
OL
OL
Table 51
Table 52: Ordering information
= 0.4 V and maximum 8 I/Os used at the same time in output
Doc ID 15056 Rev 3
= 20 mA, V
85
A
T
Amax
T
A
Jmax
(°C)
IOmax
OL
= 82 °C (measured according to JESD51-2),
95
is calculated as follows:
= 1.3 V
= 272 mW
105
115
STM32F102x8, STM32F102xB
scheme.
Suffix 6
J
< 105 °C).