r5f21368sdfp Renesas Electronics Corporation., r5f21368sdfp Datasheet - Page 486

• Manufacturer Part Number: r5f21368sdfp
• Description: Renesas Mcu R8c Family / R8c/3xt-a Series
• Manufacturer: Renesas Electronics Corporation.

Under development
R8C/36T-A Group
R01UH0240EJ0001 Rev.0.01
Apr 28, 2011
21.2.1
Notes:
After Reset
1. Initialize all the registers before switching between the I
2. Do not set both the IICTCTWI and IICTCHALF bits to 1 when the I
3. Set this bit at the initial setting and do not rewrite it during operation.
4. Do not set a digital delay which is half the transfer rate or greater.
5. Enabled only when the I
Bit
b0
b1
b2
b3
b4
b5
b6
b7
Address 000E0h (IICCR_0)
0 when the SSU function is used.
Symbol SDADLY1
IICTCHALF I
SDADLY0
SDADLY1
IICTCTWI
Bit
Symbol
IICSEL
I
2
—
—
—
C Control Register (IICCR)
Preliminary document
Specifications in this document are tentative and subject to change.
b7
0
SSU/I
Nothing is assigned. The write value must be 1. The read value is 1.
I
SDA pin digital delay select bits
2
2
C double transfer rate select bit
C half transfer rate select bit
SDADLY0 IICTCHALF IICTCTWI
2
C bus switch bit
2
C bus function is used. Disabled when the SSU function is used.
b6
0
Bit Name
b5
0
(1)
(2, 3)
(3, 4, 5)
(2, 3)
b4
0
2
C bus function and the SSU function.
0: SSU function
1: I
0: Transfer rate is the same as the value set
1: Transfer rate is twice the value set with bits
0: Transfer rate is the same as the value set
1: Transfer rate is half the value set with bits
b7 b6
0 0: Digital delay of 3 × f1 cycles
0 1: Digital delay of 11 × f1 cycles
1 0: Digital delay of 19 × f1 cycles
1 1: Do not set.
with bits CKS0 to CKS3 in the SICR1 register
CKS0 to CKS3 in the SICR1 register
with bits CKS0 to CKS3 in the SICR1 register
CKS0 to CKS3 in the SICR1 register
2
C bus function
b3
—
1
2
C bus function is used. Set both these bits to
21. Clock Synchronous Serial Interface
Function
b2
—
1
b1
—
1
Page 455 of 725
IICSEL
b0
0
R/W
R/W
R/W
R/W
R/W
R/W
—