Data Sheet S17384EJ1V0DS

11

µPD16312

7. KEY SCANNING AND DISPLAY TIMING

TDISP

≅ 500 µs

SEG output

G1

G2

G3

Gn

1 frame = TDISP x (n + 1)

1/16 TDISP

DIG1

DIG2

DIG3

DIGn

DIG1

Key scan data

1 2 3 4 5 6

Remark One cycle of key scanning consists of one frame, and data in a 6 x 4 matrix is stored in RAM.