STM32F103ZC STMicroelectronics, STM32F103ZC Datasheet - Page 58

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STM32F103ZC

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
Datasheet

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

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Electrical characteristics
58/130
High-speed external clock generated from a crystal/ceramic resonator
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 23.
1. Resonator characteristics given by the crystal/ceramic resonator manufacturer.
2. Based on characterization results, not tested in production.
3. The relatively low value of the RF resistor offers a good protection against issues resulting from use in a
4. t
For C
5 pF to 25 pF range (typ.), designed for high-frequency applications, and selected to match
the requirements of the crystal or resonator (see
same size. The crystal manufacturer typically specifies a load capacitance which is the
series combination of C
can be used as a rough estimate of the combined pin and board capacitance) when sizing
C
microcontrollers” available from the ST website www.st.com.
Figure 22. Typical application with an 8 MHz crystal
1. R
t
SU(HSE)
Symbol
L1
f
OSC_IN
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)
R
g
and C
EXT
C
i
2
m
F
L1
Resonator with
integrated capacitors
value depends on the crystal characteristics.
(4)
and C
is the startup time measured from the moment it is enabled (by software) to a stabilized 8 MHz
L2
Oscillator frequency
Feedback resistor
Recommended load capacitance
versus equivalent serial
resistance of the crystal (R
HSE driving current
Oscillator transconductance
Startup time
. Refer to the application note AN2867 “Oscillator design guide for ST
HSE 4-16 MHz oscillator characteristics
L2
, it is recommended to use high-quality external ceramic capacitors in the
C L2
C L1
Parameter
L1
and C
8 MH z
resonator
R EXT (1)
Doc ID 14611 Rev 8
L2
. PCB and MCU pin capacitance must be included (10 pF
S
)
(3)
OSC_OU T
OSC_IN
STM32F103xC, STM32F103xD, STM32F103xE
V
DD
V
with 30 pF load
= 3.3 V, V
R F
DD
Conditions
R
Figure
Startup
S
is stabilized
= 30 Ω
controlled
Bias
gain
(1)(2)
IN
22). C
= V
SS
Table
L1
and C
Min
STM32F103xx
25
4
23. In the application,
f HS E
L2
Typ
200
30
are usually the
8
2
Max
16
1
ai14145
mA/V
MHz
Unit
mA
ms
pF

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