M30845FJGP#U3 Renesas Electronics America, M30845FJGP#U3 Datasheet - Page 388

• Manufacturer Part Number: M30845FJGP#U3
• Description: IC M32C MCU FLASH 512K 144LQFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M32C/80r

Specifications of M30845FJGP#U3

• Core Processor: M32C/80
• Core Size: 16/32-Bit
• Speed: 32MHz
• Connectivity: CAN, I²C, IEBus, SIO, UART/USART
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 121
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 24K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 34x10b, D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 144-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

M
R
R
e
E
23.2 CAN Clock
3
. v
J
2
Table 23.5 CAN Clock Settings
Figure 23.36 Accessing Procedure for CAN-Associated Registers
0
C
1
The CAN clock is the operating clock for the CAN module. f
f
clock. Refer to 9. Clock Generation Circuit for details.
23.2.1 Main Clock Direct Mode
9
C
CAN
C
8 /
f
0 .
B
C
o l
f
mode while the PM25 bit is set to "1" (main clock). Set the PM25 bit in CAN sleep mode.
Set the PM24 bit in the PM2 register to "1" (main clock) before accessing CAN-associated registers in
main clock direct mode. Do not enter wait mode or stop mode when the PM24 bit is set to "1".
Table 23.5 lists CAN clock settings. Figure 23.36 shows a flow chart of accessing procedure for CAN-
associated registers.
A
f
A
CAN
1
0
1
4
k c
N
N
0
G
3
J
has the same frequency as the main clock. The PM25 bit in the PM2 register determines the CAN
6
u
o r
becomes the CAN clock in main clock direct mode. The CAN module must enter main clock direct
0 -
. l
M
(
M
P
M
u
0
1
L
a
a
p
a
L
, 7
0
n i
n i
n i
1
C
(
C
C
2
M
C
o l
0
o l
o l
NOTES:
o l
3
k c
0
C
k c
k c
2
k c
5
o l
1. Waiting time varies depending on the CPU clock frequency before or after PM24 bit
C
k c
setting is changed.
i D
- High Frequency : Higher Frequency compared "before PM24 bit setting changes" with
- Low Frequency : Lower Frequency compared "before PM24 bit setting changes" with
8 /
Page 365
S
e r
, 4
o
t c
u
M
c r
M
3
e
o
Waiting Time
2
d
C
) e
8 /
f o
4
4
) T
9
5
"after PM24 bit setting changes"
"after PM24 bit setting changes"
C
R
M
e
C
g
0
M
0
0
0
Set the PM24 bit to "0" (clock selected
t s i
7
Wait until a clock oscillation stabilized
2 x High Frequency
Set the PM24 bit in the PM2 register
Access to CAN-associated registers
by the CM07 bit in the CM0 register)
0
Low Frequency
B
r e
t i
C
to "1" (main clock)
R
M
e
C
g
1
M
0
1
1
t s i
7
1
B
r e
Start
End
t i
Cycles
C
R
M
1
e
C
g
2
or f
M
0
0
0
t s i
1
2
B
r e
CAN
t i
can be selected as the CAN clock.
P
M
2
0
0
1
4
P
M
B
2
t i
R
e
g
t s i
P
M
r e
2
0
0
1
5
B
t i
23. CAN Module
M
M
R
1
1
C
M
e
C
0
0
D
g
- - -
D
0
0
C
0
t s i
1
1
4
D
0
0
b
r e
o t
2
2
s t i