STM32L152RCU7D View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

STM32L152RCU7D

Ultra-low-power 32-bit MCU ARM®-based Cortex®-M3, 256KB Flash, 32KB SRAM, 8KB EEPROM, LCD, USB, ADC, DAC

STMicroelectronics 

Electrical characteristics

STM32L151xC STM32L152xC

Figure 19. I/O AC characteristics definition













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6.3.14

NRST pin characteristics

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

resistor, RPU (see Table 46)

Unless otherwise specified, the parameters given in Table 46 are derived from tests

performed under the conditions summarized in Table 14.

Table 46. NRST pin characteristics

Symbol

Parameter

Conditions

Min

Typ

Max Unit

VIL(NRST)(1)

VIH(NRST)(1)

NRST input low level

voltage

NRST input high

level voltage

VOL(NRST)(1)

NRST output low

level voltage

Vhys(NRST)(1)

NRST Schmitt trigger

voltage hysteresis

RPU

Weak pull-up

equivalent resistor(3)

VF(NRST)(1)

NRST input filtered

pulse

VNF(NRST)(3)

NRST input not

filtered pulse

-

-

IOL = 2 mA

2.7 V < VDD < 3.6 V

IOL = 1.5 mA

1.65 V < VDD < 2.7 V

-

VIN = VSS

-

-

-

-

0.3 VDD

0.39VDD+0.59

-

-

-

-

-

-

V

0.4

-

10%VDD(2)

-

mV

25

45

65

kΩ

-

-

50

ns

350

-

-

ns

1. Guaranteed by design.

2. With a minimum of 200 mV.

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

resistance is around 10%.

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