PCF8545ATT datasheet(39/53 Pages) NXP

39 / 53 page

NXP Semiconductors

PCA8551

Automotive 36 × 4 LCD segment driver

VDD = 1.8 V to 5.5 V; VSS = 0 V; Tamb = -40 °C to +105 °C; unless otherwise specified; all timing values are valid within the

operating supply voltage and Tamb range and are referenced to VIL and VIH with an input voltage swing of VSS to VDD.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

tsu(CE_N)

CE_N set-up time

th(CE_N)

CE_N hold time

trec(CE_N)

CE_N recovery time

Pin SDIO

tsu

set-up time

write data

hold time

write data

td(R)SDIO

SDIO read delay time

CL = 50 pF

150

tdis(SDIO)

SDIO disable time

no load

tt(SDI-SDO) transition time from SDI to

SDO

write to read mode

Table 20. SPI-bus characteristics...continued

aaa-012166

SCL

SDIO

SA2

RA0

SDI

SDO

READ

WRITE

high-Z

R/W

tsu(CE_N)

trec(CE_N)

tHIGH

tLOW

tsu

td(R)SDIO

tdis(SDIO)

tt(SDI-SDO)

th(CE_N)

80 %

20 %

Figure 29. SPI-bus timing waveforms

PCA8551

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Product data sheet

Rev. 3.1 — 3 May 2021

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