MITSUBISHI MICROCOMPUTERS
M37274EFSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
2
(2) I C Address Register
2
The I C address register (address 00F716) consists of a 7-bit slave
___
address and a read/write bit. In the addressing mode, the slave ad-
dress written in this register is compared with the address data to be
received immediately after the START condition are detected.
____
■ Bit 0: Read/Write Bit (RBW)
Not used when comparing addresses, in the 7-bit addressing mode.
In the 10-bit addressing mode, the first address data to be received
2
is compared with the contents (SAD6 to SAD0 + RBW) of the I C
address register.
The RBW bit is cleared to “0” automatically when the stop condition
is detected.
■ Bits 1 to 7: Slave Address (SAD0–SAD6)
These bits store slave addresses. Regardless of the 7-bit address-
ing mode and the 10-bit addressing mode, the address data trans-
mitted from the master is compared with the contents of these bits.
2
I C Address Register
b7 b6 b5 b4 b3 b2 b1 b0
I2C address register (S0D) [Address 00F716]
B
Name Functions
After reset R W
0: Read
1: Write
0
Read/write bit
(RBW)
0
R —
1
to
7
The address data transmitted from
the master is compared with the
contents of these bits.
Slave address
(SAD0 to SAD6)
0
R W
2
Fig. 52. I C Address Register
54
RENESAS [ RENESAS TECHNOLOGY CORP ]
