upd70f3402 Renesas Electronics Corporation., upd70f3402 Datasheet - Page 240

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

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Symbol
Symbol
CCLS
RCM
R/W
R/W
RSTOP
CCLSF
CPU operation clock status register (CCLS)
Status flags that indicate the operation status of the CPU operating clock.
This register can be read in 8-bit or 1-bit units.
Ring-OSC mode register (RCM)
This is an 8-bit register that sets the operation mode of the ring oscillator (Ring-OSC).
This register can be read or written in 8-bit or 1-bit units.
RESET input clears this register to 00H.
0
1
0
1
R
R
7
0
7
0
Operating with main system clock (f
Operating with ring OSC (f
Ring-OSC Operate
Ring-OSC Stop
Figure 6-6: CPU Operation Clock Status Register (CCLS) Format
R
R
6
0
6
0
Figure 6-7: Ring-OSC Mode Register (RCM) Format
R
R
5
0
5
0
User’s Manual U16702EE3V2UD00
Chapter 6 Clock Generator
R
)
R
R
4
0
4
0
Ring-OSC operation select
X
Status of operating clock
)
R
R
3
0
3
0
R
R
2
0
2
0
R
R
1
0
1
0
RSTOP FFFFF80CH
CCLSF FFFFF82EH
R/W
R
0
0
Address
Address
After reset
After reset
00H
00H