7−SEGMENT DRIVERS WITH BUILT−IN DECODERS

(COMMON ANODE CAPABILITY, MAXIMUM 4−DIGIT CONTROL)

The TB62709N and TB62709F are multifunctional, compact, 7−segment LED display drivers.

These ICs can directly drive 7−segment displays and individual LEDs, and can control either a 4−digit display with decimal points, or 32 individual LEDs.

These ICs can also be used with common−anode displays. Their outputs are constant current, the ampere levels at which are set using an external resistor.

A synchronous serial port connects the IC to the CPU.

The different modes of control provided by this device including Duty Control Register Set, Digit Set, Decode Set and Standby Set, are all based on every 16−bit of serial data.

FEATURES

● Control circuit power supply voltage

: VDD = 4.5 to 5.5 V

● Digit output rating

: 17 V / −400 mA

● Decoder output rating

: 17 V / 50 mA

● Built−in decoder

: Decodes the numerals 0 to 9, certain alphabetic

characters, and of course blanks code.

● Digit control function

: Can scan digit outputs DIG−0 to DIG−3 when connected

to the common anode pins of a 7−segment display.

● Maximum transmission frequency

: fCLK = 15 MHz

● Decoder outputs (OUT−A to OUT−Dp)

Output current can be set up to a 40mA maximum using an external resistor.

● Constant current tolerance (Ta = 25°C, VDD = 5.0 V)

: Variation between bits = ±7, variation between devices

(including variation between bits) = ±15 at VCE ≥ 0.7 V

● Package

: 24−pin SDIP (SDIP24−P−300−1.78)

24−pin SSOP (SSOP24−P−300−1.00)