CD00161566 Datasheet, PDF (66/105 Pages) STMicroelectronics – nullMedium-density performance line ARM-based 32-bit MCU

Electrical characteristics
STM32F103x8, STM32F103xB
Output driving current
The GPIOs (general-purpose inputs/outputs) can sink or source up to ±8 mA, and sink or
source up to ±20 mA (with a relaxed V_OL/V_OH) except PC13, PC14 and PC15 which can
sink or source up to +/-3mA. When using the GPIOs PC13 to PC15 in output mode, the
speed should not exceed 2 MHz with a maximum load of 30 pF.
In the user application, the number of I/O pins which can drive current must be limited to
respect the absolute maximum rating specified in Section 5.2:
 The sum of the currents sourced by all the I/Os on V_DD, plus the maximum Run
consumption of the MCU sourced on V_DD, cannot exceed the absolute maximum rating
I_VDD (see Table 7).
 The sum of the currents sunk by all the I/Os on V_SS plus the maximum Run
consumption of the MCU sunk on V_SS cannot exceed the absolute maximum rating
I_VSS (see Table 7).
Output voltage levels
Unless otherwise specified, the parameters given in Table 36 are derived from tests
performed under ambient temperature and V_DD supply voltage conditions summarized in
Table 9. All I/Os are CMOS and TTL compliant.
Table 36. Output voltage characteristics
Symbol
Parameter
Conditions
Min
Max Unit
V_OL(1)
Output low level voltage for an I/O pin
when 8 pins are sunk at same time
CMOS port⁽²⁾,
-
0.4
V_OH(3)
Output high level voltage for an I/O pin
when 8 pins are sourced at same time
I_IO = +8 mA
2.7 V < V_DD < 3.6 V V_DD–0.4
-
V_OL ⁽¹⁾
Output low level voltage for an I/O pin
when 8 pins are sunk at same time
TTL port⁽²⁾
-
V_OH ⁽³⁾
Output high level voltage for an I/O pin
when 8 pins are sourced at same time
I_IO =+ 8mA
2.7 V < V_DD < 3.6 V
2.4
V_OL(1)(4)
Output low level voltage for an I/O pin
when 8 pins are sunk at same time
I_IO = +20 mA
-
0.4
-
V
1.3
V_OH(3)(4)
Output high level voltage for an I/O pin
when 8 pins are sourced at same time
2.7 V < V_DD < 3.6 V _VDD–1.3
-
V_OL(1)(4)
Output low level voltage for an I/O pin
when 8 pins are sunk at same time
I_IO = +6 mA
-
0.4
V_OH(3)(4)
Output high level voltage for an I/O pin
when 8 pins are sourced at same time
2 V < V_DD < 2.7 V _VDD–0.4
-
1.
The
and
tIh^IOe
current
sum of
sunk by the device must
I_IO (I/O ports and control
always respect the absolute
pins) must not exceed I_VSS.
maximum
rating
specified
in
Table
7
2. TTL and CMOS outputs are compatible with JEDEC standards JESD36 and JESD52.
3.
T_Tah_be_leI_IO7
current sourced by
and the sum of I_IO
the
(I/O
device must always respect the absolute maximum
ports and control pins) must not exceed I_VDD.
rating
specified
in
4. Based on characterization data, not tested in production.
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