UPD70F3785GJ-GAE-AX Renesas Electronics America, UPD70F3785GJ-GAE-AX Datasheet - Page 1127

• Manufacturer Part Number: UPD70F3785GJ-GAE-AX
• Description: MCU 32BIT V850ES/JX3-E 144-LQFP
• Manufacturer: Renesas Electronics America
• Series: V850ES/Jx3-Er

Specifications of UPD70F3785GJ-GAE-AX

• Core Processor: RISC
• Core Size: 32-Bit
• Speed: 50MHz
• Connectivity: CSI, EBI/EMI, Ethernet, I²C, UART/USART, USB
• Peripherals: DMA, LVD, PWM, WDT
• Number Of I /o: 100
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 124K x 8
• Voltage - Supply (vcc/vdd): 2.85 V ~ 3.6 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

21.10 Message Transmission
21.10.1 Message transmission
conditions, the message buffer that is to transmit a message is searched.
transmission is determined based on message identifiers (IDs). To facilitate transmission processing by software
when there are several messages awaiting transmission, the CAN module uses hardware to check the ID of the
message with the highest priority and automatically identifies that message. This eliminates the need for software-
based priority control.
In all the operation modes, if the C0MCTRLm.TRQ bit is set to 1 in a message buffer that satisfies the following
• Used as a message buffer
• Set as a transmit message buffer
• Ready for transmission
Remark m = 00 to 31
The CAN system is a multi-master communication system.
Transmission priority is controlled by the identifier (ID).
(C0MCONFm.MA0 bit set to 1.)
(C0MCONFm.MT2 to C0MCONFm.MT0 bits set to 000B.)
(C0MCTRLm.RDY bit is set to 1.)
Message No.
0
1
2
3
4
5
6
7
8
9
Message waiting to be transmitted
ID = 120H
ID = 229H
ID = 223H
ID = 023H
ID = 123H
Figure 21-31. Message Processing Example
CHAPTER 21 CAN CONTROLLER
User’s Manual U19601EJ2V0UD
The CAN module transmits messages in the following sequence.
1. Message 6
2. Message 1
3. Message 8
4. Message 5
5. Message 2
In a system like this, the priority of message
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