STM8S903K3 STMicroelectronics, STM8S903K3 Datasheet - Page 103

• Manufacturer Part Number: STM8S903K3
• Description: 16 MHz STM8S 8-bit MCU, up to 8 Kbytes Flash, 1 Kbyte RAM, 640 bytes EEPROM
• Manufacturer: STMicroelectronics

Specifications of STM8S903K3

• Program Memory: 8 Kbytes Flash; data retention 20 years at 55 °C after 10 kcycles
• Data Memory: 640 bytes true data EEPROM; endurance 300 kcycles
• Ram: 1 Kbytes
• Advanced Control Timer: 16-bit, 4 CAPCOM channels, 3 complementary outputs, dead-time insertion and flexible synchronization

STM8S903K3 STM8S903F3
11.8.1
11.8.2
Reference document
JESD51-2 integrated circuits thermal test method environment conditions - natural convection
(still air). Available from www.jedec.org.
Selecting the product temperature range
When ordering the microcontroller, the temperature range is specified in the order code.
The following example shows how to calculate the temperature range needed for a given
application.
Assuming the following application conditions:
•
•
•
•
T
T
This is within the range of the suffix 6 version parts (-40 < T
In this case, parts must be ordered at least with the temperature range suffix 6.
Symbol
Θ
Θ
Θ
Θ
(1)
convection environment.
Jmax
Jmax
JA
JA
JA
JA
Maximum ambient temperature T
I
Maximum 20 I/Os used at the same time in output at low level with
I
P
Amax
P
Thus: P
Thermal resistances are based on JEDEC JESD51-2 with 4-layer PCB in a natural
DDmax
OL
INTmax =
Dmax =
for LQFP32 can be calculated as follows, using the thermal resistance Θ
= 75 °C + (60 °C/W x 464 mW) = 75 °C + 27.8 °C = 102.8 °C
= 8 mA, V
= 8 mA, V
Dmax
400
8 mA x 5 V = 400 mW
mW +
Parameter
= 464 mW
Thermal resistance junction-ambient
UFQFPN20 - 3 x 3 mm
Thermal resistance junction-ambient
LQFP32 - 7 x 7 mm
Thermal resistance junction-ambient
UFQFPN32 - 5 x 5 mm
Thermal resistance junction-ambient
SDIP32 - 400 mils
OL
= 0.4 V
DD
64 mW
= 5 V
(1)
DocID15590 Rev 6
Amax
= 75 °C (measured according to JESD51-2)
J
< 105 °C).
Value
101
60
38
60
Package information
JA
:
Unit
°C/W
°C/W
°C/W
°C/W
103/115