HD6417760BL200AV Renesas Electronics America, HD6417760BL200AV Datasheet - Page 874

• Manufacturer Part Number: HD6417760BL200AV
• Description: SH4 7760, 17 X17 256BGA, LCDC, U
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7750r

Specifications of HD6417760BL200AV

• Core Processor: SH-4
• Core Size: 32-Bit
• Speed: 200MHz
• Connectivity: Audio Codec, CAN, EBI/EMI, FIFO, I²C, MFI, MMC, SCI, Serial Sound, SIM, SPI, USB
• Peripherals: DMA, LCD, POR, WDT
• Number Of I /o: 69
• Program Memory Type: ROMless
• Ram Size: 48K x 8
• Voltage - Supply (vcc/vdd): 1.4 V ~ 1.6 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 256-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

22.4.2
Mailboxes function as message buffers to transmit/receive CAN frames. Each Mailbox is
comprised of four identical storage fields: 1) Message Control, 2) Message Data, 3) Time Stamp
and 4) Local Acceptance Filter Mask. Table 22.2 shows the address map for the control, data,
timestamp and LAFM address for each mailbox.
Notes: 1. The Message Control, Timestamp and LAFM fields can only be accessed with 16 bits,
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REJ09B0554-0200
2.
Mail box
whereas the Message Data area can be accessed in units of 16 bits or 8 bits. Also,
unused parts of Mailboxes must be initialized during the configuration to their inactive
state as they are in effect configured of RAM. When the LAFM is not used to receive
messages, it must be cleared.
Unused Mailboxes can be used as extra memory. However, it is important in such case
to disable the related mailbox (setting MBC to B'111) in order to avoid that the
mailbox joins the search for a matching identifier during the reception of messages,
and even store a wrong message in the worst case.