STM32L053C6 datasheet(105/136 Pages) STMICROELECTRONICS

Part #	STM32L053C6

Description	Ultra-low-power 32-bit MCU Arm®-based Cortex®-M0, up to 64KB Flash, 8KB SRAM, 2KB EEPROM, LCD, USB, ADC, DAC

PDF	136 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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105 / 136 page

DS10152 Rev 9

105/136

STM32L053x6 STM32L053x8

Electrical characteristics

113

Table 73. SPI characteristics in voltage Range 2 (1)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

fSCK

1/tc(SCK)

SPI clock frequency

Master mode

MHz

Slave mode Transmitter

1.65<VDD<3.6V

Slave mode Transmitter

2.7<VDD<3.6V

8(2)

Duty(SCK)

Duty cycle of SPI clock

frequency

Slave mode

tsu(NSS)

NSS setup time

Slave mode, SPI presc = 2

4*Tpclk

th(NSS)

NSS hold time

Slave mode, SPI presc = 2

2*Tpclk

tw(SCKH)

tw(SCKL)

SCK high and low time

Master mode

Tpclk-2

Tpclk

Tpclk+2

tsu(MI)

Data input setup time

Master mode

tsu(SI)

Slave mode

th(MI)

Data input hold time

Master mode

th(SI)

Slave mode

4.5

ta(SO

Data output access time

Slave mode

tdis(SO)

Data output disable time

Slave mode

tv(SO)

Data output valid time

Slave mode

56.5

tv(MO)

Master mode

th(SO)

Data output hold time

Slave mode

th(MO)

Master mode

1. Guaranteed by characterization results.

2. The maximum SPI clock frequency in slave transmitter mode is determined by the sum of tv(SO) and tsu(MI) which has to fit

into SCK low or high phase preceding the SCK sampling edge. This value can be achieved when the SPI communicates

with a master having tsu(MI) = 0 while Duty(SCK) = 50%.

STM32L053C6 Datasheet(PDF) 105 Page - STMicroelectronics

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