STM32F103ZC STMicroelectronics, STM32F103ZC Datasheet - Page 59

• Manufacturer Part Number: STM32F103ZC
• Description: Mainstream Performance line, ARM Cortex-M3 MCU with 256 Kbytes Flash, 72 MHz CPU, motor control, USB and CAN
• Manufacturer: STMicroelectronics

Specifications of STM32F103ZC

• Core: ARM 32-bit Cortex™-M3 CPU
• Conversion Range: 0 to 3.6 V
• Dma: 12-channel DMA controller
• Supported Peripherals: timers, ADCs, DAC, SDIO, I2Ss, SPIs, I2Cs and USARTs
• Systick Timer: a 24-bit downcounter

STM32F103xC, STM32F103xD, STM32F103xE
Table 24.
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:
t
C
SU(LSE)
Symbol
L1
ST microcontrollers”.
reached. This value is measured for a standard crystal and it can vary significantly with the crystal manufacturer
t
R
g
SU(LSE)
I
, C
2
m
F
L2
(3)
is the startup time measured from the moment it is enabled (by software) to a stabilized 32.768 kHz oscillation is
Feedback resistor
Recommended load capacitance
versus equivalent serial
resistance of the crystal (R
LSE driving current
Oscillator transconductance
Startup time
Low-speed external clock generated from a crystal/ceramic resonator
The low-speed external (LSE) clock can be supplied with a 32.768 kHz 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).
LSE oscillator characteristics (f
For C
15 pF range selected to match the requirements of the crystal or resonator (see
C
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
L1
stray
and C
L1
is the pin capacitance and board or trace PCB-related capacitance. Typically, it is
L1
and C
Parameter
= C
L2,
L2
are usually the same size. The crystal manufacturer typically specifies a load
L2
= 8 pF.
, it is recommended to use high-quality ceramic capacitors in the 5 pF to
L
has the following formula: C
S
)
Doc ID 14611 Rev 8
stabilized
V
LSE
DD
V
is
= 32.768 kHz)
DD
= 3.3 V, V
Conditions
R
S
L1
= 30 kΩ
L
≤
and C
T
T
T
T
T
T
T
7 pF. Never use a resonator with a load
L1
T
A
A
A
A
IN
L
A
A
A
A
= -10 °C
= -20 °C
= -30 °C
= -40 °C
= C
= 50 °C
= 25 °C
= 10 °C
= V
and C
= 0 °C
(1) (2)
L2
SS
L1
(15 pF) it is strongly recommended
x C
L2
.
L2
Table
/ (C
Electrical characteristics
L
Min
= 6 pF, and C
5
L1
24. In the application,
+ C
Typ
1.5
2.5
10
17
32
60
L2
5
4
6
) + C
Max
1.4
stray
15
Figure
stray
= 2 pF,
where
59/130
µA/V
Unit
MΩ
pF
µA
23).
s