mm74c912 Fairchild Semiconductor, mm74c912 Datasheet - Page 2

• Manufacturer Part Number: mm74c912
• Description: 6-digit Bcd Display Controller/driver
• Manufacturer: Fairchild Semiconductor

www.fairchildsemi.com
Truth Tables
X
Note 1: Segment drive may exceed maximum display dissipation.
Don’t Care
CE
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
SOE
0
0
1
1
K3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
X
Digit Address
OSE
0
1
0
1
K2
X
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
Output Control
Refresh Display
Stop Oscillator (Note 1)
Disable Segment Outputs
Standby Mode
Input Control
K1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
X
2
WE
X
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Operation
Write Digit 1
Latch Digit 1
Write Digit 2
Latch Digit 2
Write Digit 3
Latch Digit 3
Write Digit 4
Latch Digit 4
Write Digit 5
Latch Digit 5
Write Digit 6
Latch Digit 6
Write Null Digit
Latch Null Digit
Write Null Digit
Latch Null Digit
Disable Writing
Operation