UPD70F3771GF-GAT-AX Renesas Electronics America, UPD70F3771GF-GAT-AX Datasheet - Page 1004

• Manufacturer Part Number: UPD70F3771GF-GAT-AX
• Description: MCU 32BIT V850ES/JX3-H 128-LQFP
• Manufacturer: Renesas Electronics America
• Series: V850ES/Jx3-Hr

Specifications of UPD70F3771GF-GAT-AX

• Core Processor: RISC
• Core Size: 32-Bit
• Speed: 48MHz
• Connectivity: CAN, CSI, EBI/EMI, I²C, UART/USART, USB
• Peripherals: DMA, LVD, PWM, WDT
• Number Of I /o: 96
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 40K x 8
• Voltage - Supply (vcc/vdd): 2.85 V ~ 3.6 V
• Data Converters: A/D 12x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

V850ES/JG3-H, V850ES/JH3-H
requests issued for message buffers defined as transmit message buffers are held pending.
Therefore, no active error flag can be transmitted from the CAN module to the CAN bus even when a CAN bus error is
detected while receiving a message frame. Since no transmission can be issued from the CAN module, the transmission
error counter the C0ERC.TEC7 to C0ERC.TEC0 bits are never updated. Therefore, a CAN module in the receive-only
mode does not enter the bus-off state.
the local node recognizes that it has transmitted ACK. An overload frame cannot be transmitted to the CAN bus.
20.13.2 Single-shot mode
CAN protocol, a message frame transmission that has been aborted by either arbitration loss or error occurrence has to
be repeated without control by software.) All other behavior of single-shot mode is identical to normal operation mode.
Features of single-shot mode can not be used in combination with normal mode with ABT.
of the C0CTRL.AL bit. When the AL bit is cleared to 0, re-transmission upon arbitration loss and upon error occurrence is
disabled. If the AL bit is set to 1, re-transmission upon error occurrence is disabled, but re-transmission upon arbitration
loss is enabled. As a consequence, the C0MCTRLm.TRQ bit in a message buffer defined as a transmit message buffer is
cleared to 0 by the following events.
C0INTS.CINTS3 bits, and the type of the error can be identified by reading the C0LEC.LEC2 to C0LEC.LEC0 bits of the
register.
register is set to 1. If the C0IE.CIE0 bit is set to 1 at this time, an interrupt request signal is output.
R01UH0042EJ0400 Rev.4.00
Sep 30, 2010
In the receive-only mode, no message frames can be transmitted from the CAN module to the CAN bus. Transmit
In the receive-only mode, the CAN transmission pin (CTXD0) in the CAN module is fixed to the recessive level.
Furthermore, ACK is not returned to the CAN bus in this mode upon the valid reception of a message frame. Internally,
Caution If only two CAN nodes are connected to the CAN bus and one of them is operating in the receive-only
In the single-shot mode, automatic re-transmission as defined in the CAN protocol is switched off. (According to the
The single-shot mode disables the re-transmission of an aborted message frame transmission according to the setting
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•
•
The events arbitration loss and error occurrence can be distinguished by checking the C0INTS.CINTS4 and
Upon successful transmission of the message frame, the transmit completion interrupt the CINTS0 bit of the C0INTS
The single-shot mode can be used when emulating time-triggered communication methods (e.g., TTCAN level 1).
Caution The AL bit is only valid in single-shot mode. It does not affect the operation of re-transmission upon
Successful transmission of the message frame
Arbitration loss while sending the message frame (AL bit = 0)
Error occurrence while sending the message frame
mode, there is no ACK on the CAN bus. Due to the missing ACK, the transmitting node will transmit
an active error flag, and repeat transmitting a message frame. The transmitting node becomes error
passive after transmitting the message frame 16 times (assuming that the error counter was 0 in the
beginning and no other errors have occurred). When the message frame is transmitted for the 17th
time, the transmitting node generates a passive error flag. The receiving node in the receive-only
mode detects the first valid message frame at this point, and the VALID bit is set to 1 for the first time.
arbitration loss in other operation modes.
CHAPTER 20 CAN CONTROLLER
Page 1004 of 1509