6-Digit BCD Display Controller/Driver

The MM74C912 Display controllers are Interface elements, with memory, that drive a 6-digit, 8-segment LED Display The Display controllers receive data information through 5 data inputs A, B, C, D and DP, and digit information through 3 address inputs K1, K2 and K3. The input data is written into the Register selected by the address information when CHIP ENABLE, (CE), and WRITE ENABLE, (WE), are LOW and is latched when either CE or WE return HIGH. Data hold time is not required. A self-contained internal Oscillator sequentially presents the stored data to a decoder where 4 data bits control the format of the displayed character and 1 bit con- trols the decimal point. The internal Oscillator is controlled by a control input labeled Oscillator ENABLE, (OSE), which is tied LOW in normal operation. A high level at OSE prevents Automatic refresh of the Display The 7-segment plus decimal point output information directly drives an LED Display through high drive (100 mA typ.) output drivers. The drivers are active when the control pin labeled SEGMENT OUTPUT ENABLE, (SOE), is LOW and go into 3-STATE when SOE is HIGH. This feature allows for duty cycle brightness control and for disabling the output drivers for power conservation. The MM74C912 segment decoder converts BCD data into 7-segment format. All inputs are TTL compatible and do not clamp to the VCC supply. By Fairchild Semiconductor
MM74C912 's PackagesMM74C912 's pdf datasheet

MM74C912 Pinout, Pinouts
MM74C912 pinout,Pin out
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