MIC50398 Micrel Semiconductor, MIC50398 Datasheet
MIC50398
Related parts for MIC50398
MIC50398 Summary of contents
Page 1
... MIC50398/50399 General Description The MIC50398 ion-implanted, P-channel MOS six-decade synchronous up/down-counter/display driver with storage latches. The counter can be loaded digit-by-digit with BCD data. The counter has an asynchronous-clear function. Scanning is controlled by the scan oscillator input which is self-oscillating or can be driven by an external signal. The ...
Page 2
... MIC50398/50399 Operations: Six Decade Counter, Latch The six decade counter is synchronously incremented or decremented on the positive edge of the count input signal. A Schmitt trigger on this input provides hysteresis for protec- tion against both a noisy environment and double triggering due to a slow rising edge at the count input. ...
Page 3
... MIC50398/50399 Functional Diagram *50399 Only **50398 Only * BCD OUT 4 6:1 MUX STORE 6 DIGIT LATCH COUNT INHIBIT COUNT 6 DIGIT BCD UP/DOWN UP/DOWN COUNTER CLEAR LED DIS ** SEGMENT DECODER 6 SCAN COU 8-12 Micrel August 1998 ...
Page 4
... A Min – 0 3.0 10 – 3.5 V. Those inputs have internal pulldown resistors 8-13 Max Units Notes – MIC50398 only SS 670 mW 2 Max Units Notes 100 C/Watt ...
Page 5
... MIC50398/50399 Timing COUNT UP/DOWN COUNT INHIBIT STORE t CLEAR t CS COUNT t OA ZERO t CA CARRY SCAN LOAD COUNTER Loading Counter, Register (1 Digit) LOAD COUNTER BCD DATA INPUT DIGIT OUTPUT 6 DIGIT OUTPUT 5 ETC COUNT INPUT, CARRY ZERO OUTPUT INHIBITED DURING THIS TIME COUNT INPUT ...
Page 6
... MIC50398/50399 Dynamic Operating Conditions Symbol Parameter f Count Input Frequency CI f Scan Input Frequency SI t Count Pulse Width CPW t Store Pulse Width SPW t Store Setup Time SS t Count Inhibit Setup Time CIS t Up/Down setup Time UDS t Clear Pulse Width CPW t Clear Setup Time ...