Philips Semiconductors
Product specification
4-digit LED-driver with I2C-Bus interface
SAA1064
GENERAL DESCRIPTION
The LED-driver is a bipolar integrated circuit made in an
I2L compatible 18 volts process. The circuit is especially
designed to drive four 7-segment LED displays with
decimal point by means of multiplexing between two pairs
of digits. It features an I2C-Bus slave transceiver interface
with the possibility to program four different SLAVE
ADDRESSES, a POWER RESET flag, 16 current sink
OUTPUTS, controllable by software up to 21 mA, two
multiplex drive outputs for common anode segments, an
on-chip multiplex oscillator, control bits to select static,
dynamic and blank mode, and one bit for segment test.
QUICK REFERENCE DATA
PARAMETER
Supply voltage
CONDITIONS
SYMBOL
VCC
MIN.
4.5
TYP.
MAX.
15
UNIT
VEE = 0 V
CC = 5 V
5
V
(1)
Supply current all outputs OFF
Total power dissipation
24-lead DIL (SOT101B)
24-lead DIL SO (SOT137A)
Operating ambient
V
ICC
7
9.5
14
mA
Ptot
Ptot
−
−
−
−
1000
500
mW
mW
temperature range
Tamb
−40
−
+85
°C
Note
1. The positive current is defined as the conventional current flow into a device (sink current).
PACKAGE OUTLINE
SAA1064: 24-lead DIL; plastic with internal heat spreader (SOT101B); SOT101-1; 1996 August 30.
SAA1064T: 24-lead mini-pack; plastic (SO-24; SOT137A); SOT137-1; 1996 August 30.
February 1991
2
NXP [ NXP ]
