DF2556FC20DV Renesas Electronics America, DF2556FC20DV Datasheet - Page 701

• Manufacturer Part Number: DF2556FC20DV
• Description: IC H8S/2556 MCU FLASH 144QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2500r

Specifications of DF2556FC20DV

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: CAN, I²C, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 104
• Program Memory Size: 512KB (512K 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: 144-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

• Clearing by software
• Clearing by CAN bus operation
Eleven recessive bits must be received after HCAN sleep mode is cleared before CAN bus
communication is re-enabled.
Clearing by software: HCAN sleep mode is cleared by writing a 0 to MCR5 from the CPU.
Clearing by CAN bus operation: The cancellation method is selected by the MCR7 bit setting in
MCR. Clearing by CAN bus operation occurs automatically when the CAN bus performs an
operation and this change is detected. In this case, the first message is not stored in a mailbox;
messages will be received normally from the second message onward. When a change is detected
on the CAN bus in HCAN sleep mode, the bus operation interrupt flag (IRR12) is set in the
interrupt register (IRR). If the bus interrupt mask (IMR12) in the interrupt mask register (IMR) is
set to the interrupt enable value at this time, an interrupt can be sent to the CPU.
18.4.6
The HCAN halt mode is provided to enable mailbox settings to be changed without performing an
HCAN hardware or software reset. Figure 18.14 shows a flowchart of the HCAN halt mode.
HCAN Halt Mode
CAN bus communication possible
Figure 18.14 HCAN Halt Mode Flowchart
MBCR setting
MCR1 = 1
MCR1 = 0
Bus idle?
Yes
Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
No
Rev. 6.00 Sep. 24, 2009 Page 653 of 928
: Settings by user
: Processing by hardware
REJ09B0099-0600