STM32F103CBT7 STMicroelectronics, STM32F103CBT7 Datasheet - Page 52

• Manufacturer Part Number: STM32F103CBT7
• Description: MCU ARM 32BIT 64KB FLASH 48LQFP
• Manufacturer: STMicroelectronics
• Series: STM32r

Specifications of STM32F103CBT7

• 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: 128KB (128K 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 ~ 105°C
• Package / Case: 48-LQFP
• Processor Series: STM32F103x
• Core: ARM Cortex M3
• Data Bus Width: 32 bit
• Data Ram Size: 20 KB
• Interface Type: CAN, I2C, SPI, USART, USB
• Maximum Clock Frequency: 72 MHz
• Number Of Programmable I/os: 37
• Number Of Timers: 4
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWARM, EWARM-BL, MDK-ARM, RL-ARM, ULINK2
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 2 (12 bit, 10 Channel)
• Featured Product: STM32 Cortex-M3 Companion Products
• Eeprom Size: -
• For Use With: 497-10048 - BOARD EVAL ACCELEROMETER497-10030 - STARTER KIT FOR STM32KSDKSTM32-PL - KIT IAR KICKSTART STM32 CORTEXM3497-8512 - KIT STARTER FOR STM32F10XE MCU497-8511 - KIT STARTER FOR STM32 512K FLASH497-8505 - KIT STARTER FOR STM32F10XE MCU497-6438 - BOARD EVALUTION FOR STM32 512K497-6289 - KIT PERFORMANCE STICK FOR STM32MCBSTM32UME - BOARD EVAL MCBSTM32 + ULINK-MEMCBSTM32U - BOARD EVAL MCBSTM32 + ULINK2MCBSTM32 - BOARD EVAL FOR STM STM32X SER497-6053 - KIT STARTER FOR STM32497-6052 - KIT STARTER FOR STM32497-6050 - KIT STARTER FOR STM32497-6049 - KIT EVALUATION LOW COST STM32497-6048 - BOARD EVALUATION FOR STM32497-6047 - KIT DEVELOPMENT FOR STM32
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

Electrical characteristics
Table 23.
1. Based on characterization, not tested in production.
2. Refer to the note and caution paragraphs below the table, and to the application note AN2867 “Oscillator design guide for
3.
Note:
Caution:
52/99
t
SU(LSE)
Symbol
ST microcontrollers”.
reached. This value is measured for a standard crystal and it can vary significantly with the crystal manufacturer
t
SU(LSE)
R
g
C
I
2
m
F
(3)
is the startup time measured from the moment it is enabled (by software) to a stabilized 32.768 kHz oscillation is
LSE oscillator characteristics (f
For C
15 pF range selected to match the requirements of the crystal or resonator. C
usually the same size. The crystal manufacturer typically specifies a load capacitance which
is the series combination of C
Load capacitance C
C
between 2 pF and 7 pF.
To avoid exceeding the maximum value of C
to use a resonator with a load capacitance C
capacitance of 12.5 pF.
Example: if you choose a resonator with a load capacitance of C
then C
Feedback resistor
Recommended load capacitance
versus equivalent serial
resistance of the crystal (R
LSE driving current
Oscillator transconductance
Startup time
stray
L1
is the pin capacitance and board or trace PCB-related capacitance. Typically, it is
L1
and C
= C
Parameter
L2
L2
= 8 pF.
it is recommended to use high-quality ceramic capacitors in the 5 pF to
L
has the following formula: C
S
)
L1
Doc ID 13587 Rev 13
and C
V
Conditions
R
LSE
V
stabilized
DD
S
IN
V
= 30 KΩ
DD
= 3.3 V
= 32.768 kHz)
= V
L2
is
.
SS
L1
L
≤
and C
7 pF. Never use a resonator with a load
T
T
T
T
L
T
T
T
T
A
A
A
A
A
A
A
= C
A
(1) (2)
= -10 °C
= -20 °C
= -30 °C
= -40 °C
= 50 °C
= 25 °C
= 10 °C
L2
= 0 °C
L1
(15 pF) it is strongly recommended
x C
STM32F103x8, STM32F103xB
L2
/ (C
L
Min
= 6 pF, and C
5
L1
+ C
Typ
1.5
2.5
10
17
32
60
L2
5
4
6
) + C
L1
and C
Max
stray
1.4
15
stray
= 2 pF,
L2,
where
µA/V
Unit
MΩ
pF
µA
are
s