This is a product manual for the MM74C912 6-Digit BCD Display Controller/Driver
The MM74C912 is a 6-digit BCD display controller/driver manufactured by Fairchild Semiconductor using metal gate CMOS technology. It interfaces with a 6-digit, 8-segment LED display by receiving data through five inputs (A, B, C, D, and DP) and digit information through three address inputs (K1, K2, K3). The device contains six 5-bit registers that can be addressed like RAM, allowing data to be written and latched based on control signals CHIP ENABLE (CE) and WRITE ENABLE (WE).
| Maximum Supply Voltage | 6.5V |
|---|---|
| Operating Temperature Range | -40°C to +85°C |
| Segment Drive Current | 100 mA typ. |
| Digit Drive Current | 20 mA typ. |
| Package Type | 28-Lead Plastic Dual-In-Line Package (PDIP) |
The MM74C912 is designed to drive a 6-digit, 8-segment LED display.
The OSE (Oscillator Enable) pin controls the internal oscillator; a high level prevents automatic refresh of the display.
Yes, the segment outputs directly drive an LED display through high drive output drivers.