SM59R16A5/SM59R09A5/SM59R05A5
8-Bit Micro-controller
64KB/36KB/20KB with ISP Flash
& 2KB RAM embedded
001
010
011
100
101
110
111
Fosc/64
Fosc/128
Fosc/256
Fosc/512
Fosc/1024
Fosc/2048
Fosc/4096
Mnemonic: IICS
Address: F8h
7
6
5
4
3
2
1
0
Reset
MStart
RxIF
TxIF
RDR
TDR
RxAK
TxAK
RW
00h
MStart: Master Start control bit. (Master mode only)
If set the MStart bit, the module will generate a start condition to the SDA and SCL lines
and send out the calling address which is stored in the IICA1 or IICA2 (selected by MAS
control bit). When software cleared this bit, the module will generate a stop condition to
the SDA and SCL.
RxIF: The data Receive Interrupt Flag (RXIF) is set after the IICRWD (IIC Read Write Data
Buffer) is loaded with a newly receive data.
TxIF: The data Transmit Interrupt Flag (TXIF) is set when the data of the IICRWD (IIC Read
Write Data Buffer) is downloaded to the shift register.
RDR: The MCU must clear this bit after it gets the data from IICRWD. The IIC module is able to
write new data into IICRWD only when this bit is cleared.
TDR: When MCU finish writing data to IICRWD, the MCU needs to set this bit to ‘1’ to inform
the IIC module to send the data in the IICRWD. After IIC module finishes sending the
data from IICRWD, this bit will be cleared automatically.
RxAK: The Acknowledge Status indicate bit. When clear, it means an acknowledge signal has
been received after the complete 8 bits data transmit on the bus.
TxAK: The Acknowledge status transmit bit. When received complete 8 bits data, this bit will set
(NoAck) or clear (Ack) and transmit to master to indicate the receive status. Actually, it is
sent as the 9th bit in one byte transmission as show in Fig. 14-1.
RW: The slave mode read (received) or wrote (transmit) on the IIC bus. When this bit is clear,
the slave module received data on the IIC bus (SDA).(Slave mode only)
Fig. 14-1: Acknowledgement bit in the 9th bit of a byte transmission
Mnemonic: IICA1
Address: FAH
7
6
5
4
3
2
1
0
Reset
Match1 or
RW1
R or R/W
IICA1[7:1]
R/W
A0H
Specifications subject to change without notice contact your sales representatives for the most recent information.
ISSFD-M047 61 Ver.G SM59R16A5 01/2014
SYNCMOS [ SYNCMOS TECHNOLOGIES,INC ]
