UPD70F3786GJ-GAE-AX Renesas Electronics America, UPD70F3786GJ-GAE-AX Datasheet - Page 1128

• Manufacturer Part Number: UPD70F3786GJ-GAE-AX
• Description: MCU 32BIT V850ES/JX3-E 144-LQFP
• Manufacturer: Renesas Electronics America
• Series: V850ES/Jx3-Er

Specifications of UPD70F3786GJ-GAE-AX

• Core Processor: RISC
• Core Size: 32-Bit
• Speed: 50MHz
• Connectivity: CAN, 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: -

that have a pending transmission request (message buffers with the TRQ bit set to 1 in advance) is transmitted.
with the transmit message buffer with a pending transmission request. If the new transmission request has a higher
priority, it is transmitted, unless transmission of a message with a low priority has already started. To solve this
reversal of priorities, software can request that transmission of a message of low priority be stopped. The highest
priority is determined according to the following rules.
1126
1 (high)
2
3
4
5 (low)
After the transmit message search, the transmit message with the highest priority of the transmit message buffers
If a new transmission request is set, the transmit message buffer with the new transmission request is compared
Remarks 1. If the automatic block transmission request bit C0GMABT.ABTTRG bit is set to 1 in the normal
Priority
2. Before changing the contents of the transmit message buffer, the RDY flag of this buffer must be
3. m = 00 to 31
Value of first 11 bits of ID
[ID28 to ID18]:
Frame type
ID type
Value of lower 18 bits of ID
[ID17 to ID0]:
Message buffer number
operation mode with ABT, the TRQ bit is set to 1 only for one message buffer in the ABT message
buffer group.
If the ABT mode was triggered by the ABTTRG bit (1), one TRQ bit is set to 1 in the ABT area
(buffers 0 to 7). In addition to this TRQ bit, the application can request transmissions (set TRQ bit to
1) for other TX-message buffers that do not belong to the ABT area. In that case an internal
arbitration process (TX-search) evaluates all of the TX-message buffers with the TRQ bit set to 1
and chooses the message buffer that contains the highest prioritized identifier for the next
transmission. If there are 2 or more identifiers that have the highest priority (i.e. identical identifiers),
the message located at the lowest message buffer number is transmitted first.
Upon successful transmission of a message frame, the following operations are performed.
- The TRQ bit of the corresponding transmit message buffer is automatically cleared to 0.
- The transmission completion status bit CINTS0 of the C0INTS register is set to 1 (if the interrupt
- An interrupt request signal INTC0TRX is output (if the C0IE.CIE0 bit is set to 1 and if the interrupt
cleared. Since the RDY flag may be temporarily locked while the internal processing is changed, it
is necessary to check the status of the RDY flag by software after changing the buffer contents.
enable bit (IE) of the corresponding transmit message buffer is set to 1).
enable bit (IE) of the corresponding transmit message buffer is set to 1).
Conditions
CHAPTER 21 CAN CONTROLLER
The message frame with the lowest value represented by the first 11 bits of the ID
is transmitted first. If the value of an 11-bit standard ID is equal to or smaller than
the first 11 bits of a 29-bit extended ID, the 11-bit standard ID has a higher priority
than a message frame with a 29-bit extended ID.
A data frame with an 11-bit standard ID (C0MCONFm.RTR bit is cleared to 0) has
a higher priority than a remote frame with a standard ID and a message frame
with an extended ID.
A message frame with a standard ID (C0MIDHm.IDE bit is cleared to 0) has a
higher priority than a message frame with an extended ID.
If one or more transmission-pending extended ID message frame has equal
values in the first 11 bits of the ID and the same frame type (equal RTR bit
values), the message frame with the lowest value in the lower 18 bits of its
extended ID is transmitted first.
If two or more message buffers request transmission of message frames with the
same ID, the message from the message buffer with the lowest message buffer
number is transmitted first.
User’s Manual U19601EJ2V0UD
Description