upd70f3402 Renesas Electronics Corporation., upd70f3402 Datasheet - Page 432

• Manufacturer Part Number: upd70f3402
• Description: 32-/16-bit Single-chip Microcontroller With Can Interface
• Manufacturer: Renesas Electronics Corporation.

The pins of the 3-wire serial interface (CSIB) function alternately as port pins. For how to select the
alternate function, refer to the descriptions of the registers in Chapter 4 ”Port Functions” on
page 105.
Remark:
432
TOP01 (n = 1)
SIB0
SIB1
SOB0
SOB1
SCKB0
SCKB1
Pin Name Alternate-Function Pin
n = 0, 1
f
BRG
(n = 0)
SCKBn
f
f
f
XX
XX
XX
f
f
f
SIBn
XX
XX
XX
/16
/32
/64
/2
/4
/8
P40
P97
P41
P98
P42
P99
Figure 13-1: Block Diagram of 3-Wire Serial Interface
CBnCTL1
Table 13-2: List of 3-Wire Serial Interface Pins
Chapter 13 3-Wire Serial Interface (CSIB)
User’s Manual U16702EE3V2UD00
Input
Output
I/O
Internal bus
I/O
Shift register
Phase control
CBnCTL0
CBnSTR
CBnRX
CBnTX
Controller
Serial receive data input (CSIB0)
Serial receive data input (CSIB1)
Serial transmit data input (CSIB0)
Serial transmit data input (CSIB1)
Serial clock I/O (CSIB0)
Serial clock I/O (CSIB1)
CBnCTL2
SO latch
Function
control
Phase
INTCBnT
INTCBnR
SOBn