PCF8576CU datasheet(33/56 Pages) NXP

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PCF8576C_9

Product data sheet

Rev. 09 — 9 July 2009

33 of 56

NXP Semiconductors

PCF8576C

Universal LCD driver for low multiplex rates

12. Dynamic characteristics

[1]

fclk < 125 kHz, I2C-bus maximum transmission speed is derated.

[2]

All timing values are valid within the operating supply voltage and ambient temperature range and are referenced to VIL and VIH with an

input voltage swing of VSS to VDD.

Table 20.

Dynamic characteristics

VDD = 1.8 V to 5.5 V; VSS = 0 V; VLCD = 2.5 V to 6.5 V; Tamb = −40 °C to +85 °C; unless otherwise speciﬁed.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Timing characteristics: driver timing waveforms (see Figure 27)

fclk

clock frequency

[1]

normal mode; VDD = 5 V 125

200

315

kHz

power saving mode;

VDD =3 V

kHz

tclk(H)

clock HIGH time

µs

tclk(L)

clock LOW time

µs

tPD(SYNC_N) SYNC propagation delay

400

tSYNC_NL

SYNC LOW time

µs

tPD(drv)

driver propagation delay

VLCD = VDD − 5 V

µs

Timing characteristics: I2C-bus (see Figure 28)

[2]

tBUF

bus free time between a STOP and START

condition

4.7

µs

tHD;STA

hold time (repeated) START condition

4.0

µs

tSU;STA

set-up time for a repeated START condition

4.7

µs

tLOW

LOW period of the SCL clock

4.7

µs

tHIGH

HIGH period of the SCL clock

4.0

µs

rise time of both SDA and SCL signals

µs

fall time of both SDA and SCL signals

0.3

µs

capacitive load for each bus line

400

tSU;DAT

data set-up time

250

tHD;DAT

data hold time

tSU;STO

set-up time for STOP condition

4.0

µs

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