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ML51/ML54/ML56
Sep. 01, 2020
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Rev 2.00
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ML51/M
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Series
Tec
hnical Reference
Manual
I2C1DAT
– I2C1 Data
Register
SFR Address
Reset Value
I2C1DAT
B3H, Page 0
0000_0000 b
7
6
5
4
3
2
1
0
I2C1DAT[7:0]
R/W
Bit
Name
Description
[7:0]
I2C1DAT[7:0]
I2C1 Data
I2CnDAT contains a byte of the I
2
C data to be transmitted or a byte, which has just
received. Data in I2CnDAT remains as long as SI is logic 1. The result of reading or
writing I2CnDAT during I
2
C transceiver progress is unpredicted.
While data in I2CnDAT is shifted out, data on the bus is simultaneously being shifted in to
update I2CnDAT. I2CnDAT always shows the last byte that presented on the I
2
C bus.
Thus the event of lost arbitration, the original value of I2CnDAT changes after the
transaction.