M30845FJGP#U3 Renesas Electronics America, M30845FJGP#U3 Datasheet - Page 379

• 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
3
. v
J
2
Table 23.4 C0MCTLj register(j= 0 to 15) Settings and Transmit/Receive Mode
0
TRMREQ RECREQ REMOTE RSPLOCK REMACTIVE MSGLOST TRMACTIVE SENTDATA
0
0
0
1
1
C
1
9
0 .
8 /
B
0
1
4
23.1.20.1 SENTDATA/NEWDATA Bit
23.1.20.2 TRMACTIVE/INVALDATA Bit
The SENTDATA/NEWDATA bit indicates that the CAN module has transmitted or received the CAN
message. Set the SENTDATA/NEWDATA bit to "0 " (not transmitted or not received) by program
before data transmission and reception is started. The SENTDATA/NEWDATA bit is not set to "0"
automatically. When the TRMACTIVE/INVALDATA bit is set to "1" (during transmission or storing
received data), the SENTDATA/NEWDATA bit cannot be set to "0".
The TRMACTIVE/INVALDATA bit indicates that the CAN protcol controller is transmitting or receiving
a message and accessing the message slot j. The TRMACTIVE/INVALDATA bit is set to "1" when the
CAN module is accessing the message slot and to "0 " when not accessing the message slot.
0
SENTDATA :
NEWDATA :
TRMACTIVE : The TRMACTIVE bit is set to "1" (except transmitting) when a data transmission is
INVALDATA :
3
G
J
NOTES:
6
u
o r
0 -
. l
0
1
1
0
0
u
1. To read a received data from the message slot j, set the NEWDATA bit to "0" before reading. If
2. When the remote frame is transmitted or received, the SENTDATA/NEWDATA bit remains
0
1
p
, 7
0
the NEWDATA bit is set to "1" immediately after reading, this indicates that new received data
has been stored into the message slot while reading and the read data contains an indetermi-
nate value. In this case, discard the data with indeterminate value and then read the message
slot again after the NEWDATA bit is set to "0".
unchanged after the remote frame transmission or reception is completed. The SENTDATA/
NEWDATA bit is set to "1" when a subsequent data frame transmission or reception is com-
pleted.
1
(
2
M
0
3
0
2
5
C
0
0
1
0
1
8 /
Page 356
, 4
The SENTDATA bit is set to "1" (transmit complete) when data transmission is com-
pleted in the transmit message slot.
The NEWDATA bit is set to "1" (receive complete) when the message to be stored
into the message slot j (j=0 to 15) is received in the receive message slot success-
fully.
started in the message slot. If the CAN module loses in bus arbitration, the
TRMACTIVE bit is set to "0" (stops transmitting) when a CAN bus error occurs or
when a data transmission is completed.
The INVALDATA bit is set to "1" (storing received data) when receiving a received
message into the messaqe slot j, after a message reception is completed. Then the
INVALDATA bit is set to "0" after a message storage is completed. Data, if read
from the message slot j while this bit is set to "1", is indeterminate.
Settings for the C0MCTLj Register
M
3
2
0
0
1
or
0
0
0
C
f o
8 /
4
4
) T
9
5
0
0
0
0
0
0
0
0
0
0
INVALDATA NEWDATA
0
0
0
0
0
0
0
0
0
0
Transmit/Receive Mode
No frame is transmitted or received
Data frame is received
Remote frame is received
(The data frame is transmitted
after receiving the remote frame.)
Data frame is transmitted
Remote frame is transmitted
(The data frame is received after
transmitting the remote frame)
23. CAN Module