Functional Description - Nuvoton ISD94124BYI Technical Reference Manual

Isd arm cortex-m4f soc
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I2C0_SMBAL
I2C0_SMBSUS
6.13.4.2 I2C1 Basic Configurations
Clock source configuration
Enable I2C1 peripheral clock in I2C1CKEN (CLK_APBCLK0[9]).
Reset configuration
Reset I2C1 controller in I2C1RST (SYS_IPRST1[9]).
Pin configuration
Group
Pin Name
I2C1_SCL
I2C1
I2C1_SDA
I2C1_SMBAL
I2C1_SMBSUS

6.13.5 Functional Description

2
On I
C bus, data is transferred between a Master and a Slave. Data bits transfer on the SCL and
SDA lines are synchronously on a byte-by-byte basis. Each data byte is 8-bit long. There is one
SCL clock pulse for each data bit with the MSB being transmitted first, and an acknowledge bit
follows each transferred byte. Each bit is sampled during the high period of SCL; therefore, the SDA
Sep 9, 2019
ISD94100 Series Technical Reference Manual
PC.14
PD.1
PD.9
PD.15
PA.12
PA.11
GPIO
PA.13
PB.6
PC.0
PD.0
PD.2
PD.8
PD.14
PA.14
PB.5
PC.1
PD.1
PD.9
PD.15
PC.3
PC.2
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MFP2
MFP3
MFP4
MFP3
MFP1
MFP1
MFP
MFP4
MFP4
MFP1
MFP2
MFP4
MFP3
MFP5
MFP4
MFP4
MFP1
MFP2
MFP3
MFP5
MFP1
MFP1
Rev1.09

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