R5S72030W200FP Renesas Electronics America, R5S72030W200FP Datasheet - Page 1042
R5S72030W200FP
Manufacturer Part Number
R5S72030W200FP
Description
IC SUPERH MPU ROMLESS 240QFP
Manufacturer
Renesas Electronics America
Series
SuperH® SH7200r
Specifications of R5S72030W200FP
Core Processor
SH2A-FPU
Core Size
32-Bit
Speed
200MHz
Connectivity
CAN, I²C, SCI, SSI, SSU, USB
Peripherals
DMA, LCD, POR, PWM, WDT
Number Of I /o
82
Program Memory Type
ROMless
Ram Size
80K x 8
Voltage - Supply (vcc/vdd)
1.1 V ~ 3.6 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 85°C
Package / Case
240-QFP
For Use With
R0K572030S000BE - KIT DEV FOR SH7203HS0005KCU11H - EMULATOR E10A-USB H8S(X),SH2(A)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Program Memory Size
-
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Section 19 Controller Area Network (RCAN-TL1)
When RCAN-TL1 recognises the end of the Arbitration field while receiving a message, it starts
comparing the received identifier to the identifiers set in the Mailboxes, starting from Mailbox-31
down to Mailbox-0. It first checks the MBC if it is configured as a receive box, and reads LAFM,
and reads the CAN-ID of Mailbox-31 (if configured as receive) to finally compare them to the
received ID. If it does not match, the same check takes place at Mailbox-30 (if configured as
receive). Once RCAN-TL1 finds a matching identifier, it stores the number of Mailbox-[N] into
an internal buffer, stops the search, and goes back to idle state, waiting for the EndOfFrame (EOF)
th
to come. When the 6
bit of EOF is notified by the CAN Interface logic, the received message is
written or abandoned, depending on the NMC bit. No modification of configuration during
communication is allowed. Entering Halt Mode is one of ways to modify configuration. If it is
written into the corresponding Mailbox, including the CAN-ID, i.e., there is a possibility that the
CAN-ID is overwritten by a different CAN-ID of the received message due to the LAFM used.
This also implies that, if the identifier of a received message matches to ID + LAFM of 2 or more
Mailboxes, the higher numbered Mailbox will always store the relevant messages and the lower
numbered Mailbox will never receive messages. Therefore, the settings of the identifiers and
LAFMs need to be carefully selected.
With regards to the reception of data and remote frames described in the above flow diagram the
clearing of the UMSR flag after the reading of IRR is to detect situations where a message is
overwritten by a new incoming message stored in the same mailbox (if its NMC = 1) while the
interrupt service routine is running. If during the final check of UMSR a overwrite condition is
detected the message needs to be discarded and read again.
In case UMSR is set and the Mailbox is configured for overrun (NMC = 0) the message is still
valid, however it is obsolete as it is not reflecting the latest message monitored on the CAN Bus.
Please access the full Mailbox content before clearing the related RXPR/RFPR flag.
Please note that in the case a received remote frame is overwritten by a data frame, both the
remote frame receive interrupt (IRR2) and data frame received interrupt (IRR1) and also the
Receive Flags (RXPR and RFPR) are set. In an analogous way, the overwriting of a data frame by
a remote frame, leads to setting both IRR2 and IRR1.
When a message is received and stored into a Mailbox all the fields of the data not received are
stored as zero. The same applies when a standard frame is received. The extended identifier part
(EXTID[17:0]) is written as zero.
Rev. 3.00 Sep. 28, 2009 Page 1010 of 1650
REJ09B0313-0300
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