DF2505BR26DV Renesas Electronics America, DF2505BR26DV Datasheet - Page 707

• Manufacturer Part Number: DF2505BR26DV
• Description: IC H8S/2505 MCU FLASH 176-LFBGA
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2500r

Specifications of DF2505BR26DV

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 26MHz
• Connectivity: I²C, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 104
• Program Memory Size: 384KB (384K x 8)
• Program Memory Type: FLASH
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 16x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 176-LFBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

18.8.11 HCAN Transmit Procedure
Phenomenon: When the first transmission is set, and then the next (second) transmission is set or
the first set transmission is canceled immediately before SOF is output under the following
conditions, the transmit message Identifier (hereafter ID) of being set may be damaged.
1. When transmission is performed while the bus is in the idle state.
2. When the second transmission is set or the set transmission is cancelled within maximum three
3. When two transmissions (TXPR and another TXPR are set) are set, not the first transmission
When TXPR and another TXPR are set, or TXPR and TXCR are set under the all above
conditions, the message ID of the highest priority, which is selected in the second transmission
setting or the set transmission cancellation, is damaged. That is, upper five bits of the message ID,
which is selected in the first transmission, is set in the upper five bits of the ID. After the upper
five bits of the transmit message ID selected in the first transmission setting is transmitted to the
CAN bus, the lower six bits of the transmit message ID selected in the second transmission setting
or the set transmission cancellation and transmit data (maximum eight bytes) are output to the
CAN bus. The CRC error is not occurred, since CRC transmits reconstructed transmit message
with ID.
Note that after the damaged transmit message is transmitted, the transmit message of the second
highest priority, which is selected in the second transmission setting or the set transmission
cancellation, is output. The message of the highest priority, which is selected in the second
transmission setting or the set transmission cancellation, is not output.
HCAN operating clocks including the sampling point immediately before the SOF output.
but the second transmission has priority. When the transmission is set and the set transmission
is cancelled (TXPR and TXCR are set), and then transmitting a message of the highest priority
is cancelled in the first transmission setting.
Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
Rev. 6.00 Sep. 24, 2009 Page 659 of 928
REJ09B0099-0600