M37221M4H_15 Datasheet, PDF (99/114 Pages) Renesas Technology Corp – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER

M37221M4H/M6H/M8H/MAH–XXXSP/FP M37221EASP/FP
Address 00D716
I²C Data Shift Register
b7 b6 b5 b4 b3 b2 b1 b0
I²C data shift register (S0) [Address 00D716]
B Name
Functions
After reset R W
0 _{D0 to D7} This is an 8-bit shift register to store
to
receive data and write transmit data.
7
Indeterminate R W
Note: To write data into the I²C data shift register after setting the MST bit to
“0” (slave mode), keep an interval of 8 machine cycles or more.
Address 00D816
I²C Address Register
b7 b6 b5 b4 b3 b2 b1 b0
I²C address register (S0D) [Address 00D816]
B
Name
0 Read/write bit
(RBW)
1 Slave address
to (SAD0 to SAD6)
7
Functions
After reset R W
<Only in 10-bit addressing (in slave) mode>
The last significant bit of address data is
compared.
0: Wait the first byte of slave address after
START condition
(read state)
1: Wait the first byte of slave address after
RESTART condition
(write state)
0 R—
<In both modes>
The address data is compared.
0 RW
Rev.1.00 Oct 01, 2002 page 97 of 110
REJ03B0134-0100Z