PCF8577C

Features:

· Direct/duplex drive modes with up to 32/64 LCD-segment drive capability per device
· Operating supply voltage: 2.5 to 6 V
· Low power consumption
· I2C-bus interface
· Optimized pinning for single plane wiring
· Single-pin built-in oscillator
· Auto-incremented loading across device subaddress boundaries
· Display memory switching in direct drive mode
· May be used as I2C-bus output expander
· System expansion up to 256 segments
· Power-on reset blanks display
· I2C-bus address: 0111 0100.


Pinout




Specifications

SYMBOL	PARAMETER	CONDITIONS	MIN.	MAX.	UNIT
VDD	supply voltage		-0.5	+8.0	V
VI	input voltage on pin		-0.5	VDD + 0.5	V
IDD; ISS	VDD or VSS current		-50	+50	mA
II	DC input current		-20	+20	mA
IO	DC output current		-25	+25	mA
Ptot	power dissipation per package	note 1	-	500	mW
PO	power dissipation per output		-	100	mW
Tstg	storage temperature		-65	+150

Description

The PCF8577C is a single chip, silicon gate CMOS circuit. It is designed to drive liquid crystal displays with up to 32 segments directly, or 64 segments in a duplex configuration.

The two-line I2C-bus interface substantially reduces wiring overheads in remote display applications. I2C-bus traffic is minimized in multiple IC PCF8577C applications by automatic address incrementing, hardware subaddressing and display memory switching (direct drive mode).To allow partial VDD shutdown the ESD protection system of the SCL and SDA pins of PCF8577C does not use a diode connected to VDD.