upd70f3402 Renesas Electronics Corporation., upd70f3402 Datasheet - Page 237

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

(2)
Cautions: 1. Before modifying EXCKSEL register value, corresponding peripheral I/O function
EXCKSEL
Symbol
CS31CKSEL
CS30CKSEL
CB1CKSEL
CB0CKSEL
AF1CKSEL
AF0CKSEL
R/W
Extension clock select register (EXCKSEL)
This is an 8-bit register that selects the internal clock. This register can be read or written in 8-bit
or 1-bit units.
0
1
0
1
0
1
0
1
0
1
0
1
R
7
2. When set to 1 either bit 5 or 4 of EXCKSEL register, be sure to set bit 4 of OCKS2
0
Normal clock selection (f
Extended clock selection (f
Normal clock selection (f
Extended clock selection (f
Normal clock selection (f
Extended clock selection (f
Normal clock selection (f
Extended clock selection (f
Normal clock selection (f
Extended clock selection (f
Normal clock selection (f
Extended clock selection (f
have to be stopped.
register (OCKSEN2 bit) to 1.
Figure 6-3: Extension Clock Select Register (EXCKSEL) Format
R/W
6
0
CB1CKSEL CB0CKSEL CS31CKSEL CS30CKSEL AF1CKSEL AF0CKSEL
R/W
5
User’s Manual U16702EE3V2UD00
R/W
XX
XX
XX
XX
Chapter 6 Clock Generator
XX
XX
4
PLL_PCKSEL
PLL_PCKSEL
PLL_PCKSEL
PLL_PCKSEL
)
)
)
)
PLL_PCKSEL
PLL_PCKSEL
)
)
R/W
3
CSIB1 Clock selection
CSIB0 Clock selection
CAN1 Clock selection
CAN0 Clock selection
)
)
)
)
CSI31 Clock selection
CSI30 Clock selection
)
)
R/W
2
R/W
1
R/W
0
FFFFF30CH
Address
After reset
00H
237