LPC55S2X datasheet(90/132 Pages) NXP

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NXP Semiconductors

LPC55S2x/LPC552x

32-bit Arm Cortex®-M33 microcontroller

SCK (CPOL = 0)

MISO (CPHA = 1)

SSEL

MOSI (CPHA = 1)

Tcy(clk)

tDS

tDH

tv(Q)

DATA VALID (LSB)

DATA VALID

tv(Q)

SCK (CPOL = 1)

DATA VALID (LSB)

DATA VALID

MISO (CPHA = 0)

MOSI (CPHA = 0)

tDS

tDH

DATA VALID (MSB)

DATA VALID

DATA VALID (LSB)

tv(Q)

DATA VALID (MSB)

DATA VALID

tv(Q)

DATA VALID (MSB)

IDLE

DATA VALID (MSB)

Figure 19. SPI slave timing

11.12 High-Speed SPI interface (Flexcomm Interface 8)

The actual SPI bit rate depends on the delays introduced by the external trace, the external device, system

clock (CCLK), and capacitive loading. Excluding delays introduced by external device and PCB, the maximum

supported bit rate for SPI master mode (transmit/receive) is 50 Mbit/s. Excluding delays introduced by external

device and PCB, the maximum supported bit rate for SPI slave receive mode is 50 Mbit/s and for SPI slave

transmit mode is 25 Mbit/s.

Tamb = -40 °C to 105 °C; VDD = 1.8 V to 3.6 V; CL = 10 pF balanced loading on all pins; Input slew = 1 ns, SLEW setting =

fast mode for all pins;. Parameters sampled at the 50% level of the rising or falling edge.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

SPI master

tDS

data set-up time

tDH

data hold time

tv(Q)

data output valid time

SPI slave

tDS

data set-up time

tDH

data hold time

Table 36. SPI dynamic characteristics[1]

LPC55S2X_LPC552X

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Data sheet

Rev. 2.3 — 29 August 2024

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