STM32F103C8T6TR STMicroelectronics, STM32F103C8T6TR Datasheet - Page 35

• Manufacturer Part Number: STM32F103C8T6TR
• Description: MCU ARM 64KB FLASH MEM 48-LQFP
• Manufacturer: STMicroelectronics
• Series: STM32r

Specifications of STM32F103C8T6TR

• Core Processor: ARM® Cortex-M3™
• Core Size: 32-Bit
• Speed: 72MHz
• Connectivity: CAN, I²C, IrDA, LIN, SPI, UART/USART, USB
• Peripherals: DMA, Motor Control PWM, PDR, POR, PVD, PWM, Temp Sensor, WDT
• Number Of I /o: 37
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 20K x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 3.6 V
• Data Converters: A/D 10x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-LQFP
• For Use With: 497-10048 - BOARD EVAL ACCELEROMETER497-10030 - STARTER KIT FOR STM32497-8511 - KIT STARTER FOR STM32 512K FLASH497-6438 - BOARD EVALUTION FOR STM32 512K
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

STM32F103xx
High-speed external clock
The high-speed external (HSE) clock can be supplied with a 4 to 16 MHz crystal/ceramic
resonator oscillator. All the information given in this paragraph are based on characterization
results obtained with typical external components specified in
the resonator and the load capacitors have to be placed as close as possible to the oscillator
pins in order to minimize output distortion and startup stabilization time. Refer to the crystal
resonator manufacturer for more details on the resonator characteristics (frequency,
package, accuracy).
Table 17.
1. Resonator characteristics given by the crystal/ceramic resonator manufacturer.
2. For C
3. The relatively low value of the RF resistor offers a good protection against issues resulting from use in a
4. t
Figure 13. Typical application with a 8-MHz crystal
1. R
t
SU(HSE)
Symbol
f
OSC_IN
C
designed for high-frequency applications, and selected to match the requirements of the crystal or
resonator. C
capacitance which is the series combination of C
included when sizing C
capacitance).
humid environment, due to the induced leakage and the bias condition change. However, it is
recommended to take this point into account if the MCU is used in tough humidity conditions.
oscillation is reached. This value is measured for a standard crystal resonator and it can vary significantly
with the crystal manufacturer
SU(HSE)
C
R
g
L2
EXT
i
2
L1
m
F
(2)
L1
value depends on the crystal characteristics. Typical value is in the range of 5 to 6R
(4)
Resonator with
integrated capacitors
and C
is the startup time measured from the moment it is enabled (by software) to a stabilized 8 MHz
Oscillator frequency
Feedback resistor
Recommended load capacitance
versus equivalent serial
resistance of the crystal (R
HSE driving current
Oscillator Transconductance
startup time
HSE 4-16 MHz oscillator characteristics
L1
L2
and C
it is recommended to use high-quality ceramic capacitors in the 5 pF to 25pF range (typ.),
C L2
C L1
L2,
L1
Parameter
are usually the same size. The crystal manufacturer typically specifies a load
and C
8 MH z
resonator
R EXT (1)
L2
(10 pF can be used as a rough estimate of the combined pin and board
S
)
(3)
OSC_OU T
OSC_IN
L1
V
and C
IN
V
R F
=V
SS
Conditions
V
R
DD
L2
SS
Startup
S
is stabilized
load
. PCB and MCU pin capacitance must be
= 30
= 3.3 V
controlled
with 30 pF
Bias
gain
(1)
Table
Electrical characteristics
Min
STM32F103xx
25
4
17. In the application,
f HSE
Typ
200
30
8
2
S
.
Max
16
ai14145
1
mA/V
MHz
Unit
mA
35/67
ms
k
pF