DF2505BR26DV Renesas Electronics America, DF2505BR26DV Datasheet - Page 691

• 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: -

Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
• Transmission order determined by message identifier priority
• Transmission order determined by mailbox number priority
Either of the message transmission methods can be selected with the message transmission method
bit (MCR2) in the master control register (MCR): When messages are set to be transmitted
according to the message identifier priority, if several messages are designated as waiting for
transmission (TXPR = 1), the message with the highest priority in the message identifier is stored
in the transmit buffer. CAN bus arbitration is then carried out for the message stored in the
transmit buffer, and the message is transmitted when the transmission right is acquired. When the
TXPR bit is set, the highest-priority message is found and stored in the transmit buffer.
When messages are set to be transmitted according to the mailbox number priority, if several
messages are designated as waiting for transmission (TXPR = 1), messages are stored in the
transmit buffer in low-to-high mailbox order. CAN bus arbitration is then carried out for the
message stored in the transmit buffer, and the message is transmitted when the transmission right
is acquired.
18.4.3
Message Transmission
Messages are transmitted using mailboxes 1 to 15. The transmission procedure after initial settings
is described below, and a transmission flowchart is shown in figure 18.9.
Rev. 6.00 Sep. 24, 2009 Page 643 of 928
REJ09B0099-0600