HT16K33 datasheet(31/47 Pages) HOLTEK

31 / 47 page

Rev. 1.10

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Rev. 1.10

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HT16K33

RAM Mapping 16*8 LED Controller Driver with keyscan

Write Operation

Byte write operation

A byte write operation requires a START condition, slave address with R/W bit, a valid Command

code / Register address, a Data and a STOP condition.

Slave Address

ACK

Write

Command code

ACK

A� A1 A0

D15 D14 D13 D1� D11 D10 D9

Command Byte Received

Slave Address

ACK

Write

Command / Address b�te

ACK

0 A� A1 A0 0

D15 D14 D13 D1� D11 D10 D9

Data code

ACK

D�

1 b�te data

Command and Single Data Byte Received

Page write operation

Following a START condition and slave address with R/W bit is placed on the bus and indicates to

the addressed device that Register Address will follow and is to be written to the address pointer.

The data to be written to the memory in next and the internal address pointer is incremented to the

next address location on the reception of an acknowledge clock. After reaching the display memory

location 0X0FH the pointer will reset to 0X00H (display memory).

Slave Address

ACK

Write

Command / register Address b�te

ACK

S 1 1 1 0 A� A1 A0 0

D15 D14 D13 D1� D11 D10 D9 D8

Data b�te

ACK

D7 D� D5 D4 D3 D� D1 D0

n b�tes data

Data b�te

D7 D� D5 D4 D3 D� D1 D0

First b�te data

ACK

Data b�te

D7 D� D5 D4 D3 D� D1 D0

Second b�te data

∫∫

ACK

N Data Bytes Received

HT16K33 Datasheet(PDF) 31 Page - Holtek Semiconductor Inc

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