NUTINY-SDK-M0516 Nuvoton Technology Corporation of America, NUTINY-SDK-M0516 Datasheet - Page 162

• Manufacturer Part Number: NUTINY-SDK-M0516
• Description: BOARD EVAL NUMICRO M051 SERIES
• Manufacturer: Nuvoton Technology Corporation of America
• Series: NuMicro M051™r
• Type: MCUr

Specifications of NUTINY-SDK-M0516

• Contents: Board, Cable
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: M051™ Series, M052/M054/M058/M0516

6.5.3.4 Slave Address Transfer
6.5.3.5 Data Transfer
usually referred to as the P-bit, is defined as a LOW to HIGH transition on the SDA line while SCL
is HIGH.
The first byte of data transferred by the master immediately after the START signal is the slave
address. This is a 7-bits calling address followed by a RW bit. The RW bit signals the slave the
data transfer direction. No two slaves in the system can have the same address. Only the slave
with an address that matches the one transmitted by the master will respond by returning an
acknowledge bit by pulling the SDA low at the 9th SCL clock cycle.
Once successful slave addressing has been achieved, the data transfer can proceed on a byte-
by-byte basis in the direction specified by the RW bit sent by the master. Each transferred byte is
followed by an acknowledge bit on the 9th SCL clock cycle. If the slave signals a Not
Acknowledge (NACK), the master can generate a STOP signal to abort the data transfer or
generate a Repeated START signal and start a new transfer cycle.
If the master, as the receiving device, does Not Acknowledge (NACK) the slave, the slave
releases the SDA line for the master to generate a STOP or Repeated START signal.
NuMicro M051
Figure 6.5-5 START and STOP condition
™
Series Technical Reference Manual
- 162 -
Publication Release Date: Sep 14, 2010
Revision V1.2