Datasheet

Rev. 1.10 34 May 16, 2011 Rev. 1.10 35 May 16, 2011
HT16K33
RAM Mapping 16*8 LED Controller Driver with keyscan
● 12*8 display application: (No INT pin function and 10*3 key function)
LED matrix
SCL
SDA
VDD
VSS
MCU
VDD
VSS
HT16K33
VSS
0.1uF
COM0
COM1/KS0
COM2/KS1
COM3/KS2
COM4
COM5
COM6
COM7
VDD
Row11/K10/INT
Row10/K9
Row9/K8
Row8/K7
Row7/K6
Row6/K5
Row5/K4
Row4/K3
Row3/K2
Row2/K1
Row1/A0
Row0/A1
39KΩ*10
=
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
4.7KΩ4.7KΩ
R
A0
R
A1
Note: 1. If R
A0
and R
A1
are Open, the I
2
C slave address (A0~A1) is set to low and A2 is always set to low.
2. If R
A0
and R
A1
are 39KΩ, the I
2
C slave address (A0~A1) is set to high and A2 is always set to low.
3. If the key input is not used for LED display, the resistor in series with the key input (R1~R10) can be
omitted.
● 11*8 display application: (INT pin function and 9*3 key function)
LED matrix
SCL
SDA
VDD
VSS
HT16K33
COM0
COM1/KS0
COM2/KS1
COM3/KS2
COM4
COM5
COM6
COM7
Row11/K10INT
Row10/K9
Row9/K8
Row8/K7
Row7/K6
Row6/K5
Row5/K4
Row4/K3
Row3/K2
Row2/K1
Row1/A0
Row0/A1
MCU
VDD
VSS
VSS
4.7KΩ
0.1uF
VDD
39KΩ*9
=
4.7KΩ
R1
R2
R3
R4
R5
R6
R7
R8
R9
R
A0
R
A1
Note: 1. If R
A0
and R
A1
are Open, the I
2
C slave address (A0~A1) is set to low and A2 is always set to low.
2. If R
A0
and R
A1
are 39KΩ, the I
2
C slave address (A0~A1) is set to high and A2 is always set to low.
3.
If the key input is not used for LED display, the resistor in series with the key input (R1~R9) can be omitted.