M16C Datasheet, PDF (42/262 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Preliminary Specifications REV.B
Mitsubishi microcomputers
Specifications in this manual are tentative and subject to change.
M16C / 6N Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Clock Generating Circuit
Figure 5-5 shows the CAN0/1 clock select register and Figure 5-6 shows the peripheral function clock
select register.
CAN0/1 clock select register (Note 1, Note 2)
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
C01CLKR
Address
025F16
When reset
0016
Bit symbol
Bit name
CCLK0 ^{CAN0 Clock select bit}
CCLK1
CCLK2
CCLK3 ^{Reserved bit}
CCLK4 CAN1 Clock select bit
CCLK5
CCLK6
Function
b2 b1 b0
0 0 0: No division mode
0 0 1: Division by 2 mode
0 1 0: Division by 4 mode
0 1 1: Division by 8 mode
1 0 0: Division by 16 mode
Always set to "0"
b6 b5 b4
0 0 0: No division mode
0 0 1: Division by 2 mode
0 1 0: Division by 4 mode
0 1 1: Division by 8 mode
1 0 0: Division by 16 mode
RW
CCLK7 ^{Reserved bit}
Always set to "0"
Note1: Set bit 0 of the protect register (address 000A16) to "1" before writing in this register.
Note2: Change the register value only when the CAN module is in Reset/Initialization mode
(the bit 0 of the CAN Control Register (address 021016 and 023016) is"1").
Figure 5-5. CAN0/1 clock select register
Peripheral function clock select register (Note 1)
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
PCLKR
Address
025E16
When reset
XXXXXX0016
Bit symbol
Bit name
Function
RW
PCLK0
TimerA, TimerB, A-D
converter function clock
0: division by 2 mode
1: division by 1 mode (Note 2)
PCLK1
UART0-2, SIO3 function ^{0: division by 2 mode}
clock
1: division by 1 mode (Note 2)
Nothing is assigned.
These bits can neither be set nor reset. When read, their contents are "0".
Note1: Set bit 0 of the protect register (address 000A16) to "1" before writing in this register.
Note 2: Do not set "1" when XIN is more than 16 MHz
Figure 5-6. Peripheral function clock select register
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