Datasheet

Rev. 1.10 14 May 16, 2011 Rev. 1.10 15 May 16, 2011
HT16K33
RAM Mapping 16*8 LED Controller Driver with keyscan
Digital Dimming Data Input
The Display Dimming capabilities of the HT16K33 are very versatile. The whole display can be
dimmed using pulse width modulation techniques for the ROW driver by the Dimming command,
as shown:
D15 D14 D13 D12 D11 D10 D9 D8
ROW driver output pulse width Def.
1 1 1 0 P3
P2 P1 P0
1 1 1 0 0 0 0 0
1/16 duty —
1 1 1 0 0 0 0 1
2/16 duty —
1 1 1 0 0 0 1 0
3/16 duty —
1 1 1 0 0 0 1 1
4/16 duty —
1 1 1 0 0 1 0 0
5/16 duty —
1 1 1 0 0 1 0 1
6/16 duty —
1 1 1 0 0 1 1 0
7/16 duty —
1 1 1 0 0 1 1 1
8/16 duty —
1 1 1 0 1 0 0 0
9/16 duty —
1 1 1 0 1 0 0 1
10/16 duty —
1 1 1 0 1 0 1 0
11/16 duty —
1 1 1 0 1 0 1 1
12/16 duty —
1 1 1 0 1 1 0 0
13/16 duty —
1 1 1 0 1 1 0 1
14/16 duty —
1 1 1 0 1 1 1 0
15/16 duty —
1 1 1 0 1 1 1 1
16/16 duty Y