SM39R08A5
8-Bit Micro-controller
with 8KB Flash
& 256B RAM embedded
Mnemonic: IICA1
Address: FAH
7
6
5
4
3
2
1
0
Reset
IICA1[7:1]
R/W
Match1 or RW1
R or R/W
A0H
Slave mode:
IICA1[7:1]: IIC Address registers
This is the first 7-bit address for this slave module. It will be checked when an address (from
master) is received
Match1: When IICA1 matches with the received address from the master side, this bit will set to 1 by
hardware. When IIC bus gets or send first data, this bit will clear automatically.
Master mode:
IICA1[7:1]: IIC Address registers
This 7-bit address indicates the slave with which it wants to communicate.
RW1: This bit will be sent out as RW of the slave side if the module has set the MStart or RStart bit. It
appears at the 8th bit after the IIC address as shown in Fig. 14-2. It is used to tell the salve the
direction of the following communication. If it is 1, the module is in master receive mode. If 0, the
module is in master transmit mode.
Fig. 11-2: RW bit in the 8th bit after IIC address
Address: FBh
Mnemonic: IICA2
7
6
5
4
3
2
1
0
Reset
60h
IICA2[7:1]
R/W
Match2 or RW2
R or R/W
Slave mode:
IICA2[7:1]: IIC Address registers
This is the second 7-bit address for this slave module.
It will be checked when an address (from master) is received
Match2: When IICA2 matches with the received address from the master side, this bit will set to 1 by
hardware. When IIC bus gets or send first data, this bit will clear automatically.
Master mode:
IICA2[7:1]: IIC Address registers
This 7-bit address indicates the slave with which it wants to communicate.
RW2: This bit will be sent out as RW of the slave side if the module has set the MStart or RStart bit. It is
used to tell the salve the direction of the following communication. If it is 1, the module is in
master receive mode. If 0, the module is in master transmit mode.
Specifications subject to change without notice contact your sales representatives for the most recent information.
ISSFD-M067
Ver B SM39R08A5 04/22/2013
- 44 -
SYNCMOS [ SYNCMOS TECHNOLOGIES,INC ]
