HL5616

Patent No.:

US 7,023,221 B1 (U.S.A.)
I 259908 (R.O.C.)
EP 1791260 B1 (EUROPE)
ZL 200510080231.9 (CHINA)
特許第4365817号 (JAPAN)
US 7,944,217 B2 (U.S.A.)

GENERAL DESCRIPTION

HL5616 is a multi-keys capacitive touch sensor IC with very high noise rejection capability. The circuit is designed to be applied in home appliance products, where the EMI interference can be very strong. In the application field of the home appliance products, Triac is often used as the driver of the load. In order to reduce the driving current consumption of the Triac, a zero crossing circuit is designed in the HL5616, and the pulse-mode trigger current can be provided in HL5616.

The sensors of the capacitive touch sensor IC are composed of multiple arrays of sensor plates. In HL5616 16 touch sensor plates are provided.

HL5616 can communicate with external microprocessor through SCL and SDA pins. When a key is touched the READYN pin is activated to LOW state, and which means DATA is ready to be read. SDA and SCL are serial data bus.

HL5616 is fabricated by CMOS process with very low power consumption. In order to expand the number of the keys multiple numbers of HL5616 can be used in one system. The maximum number of HL5616 can be used in one system is eight. There are address pins ADD2, ADD1 and ADD0 which can be used to identify which HL5616 is chosen by microprocessor.

FEATURES

Mixed mode integrated circuit
Low operating current
Serial digital data bus
Parameters can be programmed by external microprocessor
Keys of keypad are expandable
Built-in regulator circuit
Three address pins which can be used to identify HL5616
Built-in DATA buffer
High temperature variation resistance
High noise interference resistance
Pulse mode of Triac trigger current is provided

ELECTRICAL CHARACTERISTICS (VDD=4.5V, GND=0V, MODE1=0, VSL=1, Ta=+25℃)

PARAMETER	CONDITIONS	MIN	TYP	MAX	UNITS
VDD	Supply Voltage	3.5	4.5	6.0	V
Standby Current	MRSTN = GND		0.2		uA
Operating Current	fosc=1MHz		0.5		mA
Input low voltage				0.9	V
Input high voltage		3.5			V
Output low voltage	I out = 15mA		0.2	0.4	V
Output high voltage	I out = 5mA	4.0	4.3		V

ELECTRICAL CHARACTERISTICS (VDD=3.3V, GND=0V, MODE=1, VSL=1, Ta=+25℃)

PARAMETER	CONDITIONS	MIN	TYP	MAX	UNITS
VDD	Supply Voltage	3.1	3.3	3.5	V
Standby Current	MRSTN = GND		0.2		uA
Operating Current	fosc=1MHz		0.5		mA
Input low voltage				0.9	V
Input high voltage		2.4			V
Output low voltage	I out = 15mA		0.2	0.4	V
Output high voltage	I out = 5mA	2.6	3.1		V

ELECTRICAL CHARACTERISTICS (VDD=3V, GND=0V, MODE=1, VSL=0, Ta=+25℃)

PARAMETER	CONDITIONS	MIN	TYP	MAX	UNITS
VDD	Supply Voltage	2.7	3.0	3.5	V
Standby Current	MRSTN = GND		0.2		uA
Operating Current	fosc=1MHz		0.4		mA
Input low voltage				0.9	V
Input high voltage		2.1			V
Output low voltage	I out = 10mA		0.2	0.4	V
Output high voltage	I out = 3mA	2.4	2.8		V