STM32F103VBT6 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

STM32F103VBT6

Performance line, ARM-based 32-bit MCU with Flash, USB, CAN, seven 16-bit timers, two ADCs and nine communication interfaces

STMicroelectronics 

STM32F103xx

Figure 16. I/O AC characteristics definition

Electrical characteristics

90%

50%

10%

10%

50%

90%

EXT ERNAL

O UTP UT

ON 50pF

tr(I O)out

tr(I O)out

T

Maximum fr equency is achieved if (tr + tf) £ 2/3) T and if the duty cycle is (45-55%)

when loaded by 50pF

ai14131

5.3.13

NRST pin characteristics

The NRST pin input driver uses CMOS technology. It is connected to a permanent pull-up

resistor, RPU (see Table 29).

Unless otherwise specified, the parameters given in Table 32 are derived from tests

performed under ambient temperature and VDD supply voltage conditions summarized in

Table 7.

Table 32. NRST pin characteristics(1)

Symbol

Parameter

Conditions Min Typ Max Unit

VIL(NRST) NRST Input low level voltage

VIH(NRST) NRST Input high level voltage

–0.5

2

0.8

V

VDD+0.5

Vhys(NRST)

NRST Schmitt trigger voltage

hysteresis

200

RPU

VF(NRST)

VNF(NRST)

Weak pull-up equivalent resistor(2)

NRST Input filtered pulse(3)

NRST Input not filtered pulse(3)

VIN = VSS

30 40

300

50

kΩ

100 ns

µs

1. TBD stands for to be determined.

2. The pull-up is designed with a true resistance in series with a switchable PMOS. This PMOS contribution

. to the series resistance must be minimum (~10% order)

3. Values guaranteed by design, not tested in production.

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