r5f21346mnfp Renesas Electronics Corporation., r5f21346mnfp Datasheet - Page 564

• Manufacturer Part Number: r5f21346mnfp
• Description: Single-chip Mcus Incorporates The R8c Cpu Core
• Manufacturer: Renesas Electronics Corporation.

R8C/34M Group
R01UH0131EJ0100 Rev.1.00
Jun 21, 2011
26.2.4
26.2.5
b7 to b0
b7 to b0
After Reset
After Reset
Bit
Bit
Address 0194h
Address 0196h
Symbol
Symbol
Bit
Bit
This register stores transmit data.
When the ICDRS register is detected as empty, the stored transmit data item is transferred to the
ICDRS register and data transmission starts.
When the next unit of transmit data is written to the ICDRT register while data is transmitted to the
ICDRS register, continuous transmission is enabled.
When the MLS bit in the ICMR register is set to 1 (data transfer with LSB-first), the MSB-LSB
inverted data is read after the data is written to the ICDRT register.
This register stores receive data.
When the ICDRS register receives 1 byte of data, the receive data is transferred to the ICDRR
register and the next receive operation is enabled.
IIC bus Transmit Data Register (ICDRT)
IIC bus Receive Data Register (ICDRR)
b7
b7
—
—
1
1
b6
b6
—
—
1
1
b5
—
b5
—
1
1
b4
b4
—
—
1
1
Function
Function
b3
b3
—
—
1
1
b2
b2
—
—
1
1
b1
b1
—
—
1
1
b0
b0
—
—
1
1
26. I
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2
C bus Interface
R/W
R/W
R/W
R