HD64F2623FA20J Renesas Electronics America, HD64F2623FA20J Datasheet - Page 589
HD64F2623FA20J
Manufacturer Part Number
HD64F2623FA20J
Description
IC H8S MCU FLASH 256K 100-QFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2600r
Specifications of HD64F2623FA20J
Core Processor
H8S/2600
Core Size
16-Bit
Speed
20MHz
Connectivity
CAN, SCI, SmartCard
Peripherals
POR, PWM, WDT
Number Of I /o
53
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
12K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 16x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
100-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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15.3.2
After a hardware reset, the following initialization processing should be carried out:
These initial settings must be made while the HCAN is in bit configuration mode. Configuration
mode is a state in which the reset request bit (MCR0) in the master control register (MCR) is 1 and
the reset status bit in the general status register (GSR) is also 1 (GSR3 = 1). Configuration mode is
exited by clearing the reset request bit in MCR to 0; when MCR0 is cleared to 0, the HCAN
automatically clears the reset state bit (GSR3) in the general status register (GSR). The power-up
sequence then begins, and communication with the CAN bus is possible as soon as the sequence
ends. The power-up sequence consists of the detection of 11 consecutive recessive bits.
IRR0 Clearing: The reset interrupt flag (IRR0) is always set after a reset or recovery from
software standby mode. As an HCAN interrupt is initiated immediately when interrupts are
enabled, IRR0 should be cleared.
Bit Rate and Bit Timing Settings: As bit rate settings, a baud rate setting and bit timing setting
must be made each time a CAN node begins communication. The baud rate and bit timing settings
are made in the bit configuration register (BCR).
a. Note
Clearing of IRR0 bit in interrupt register (IRR)
Bit rate setting
Mailbox transmit/receive settings
Mailbox (RAM) initialization
Message transmission method setting
BCR can be written to at all times, but should only be modified in configuration mode.
Settings should be made so that all CAN controllers connected to the CAN bus have the same
baud rate and bit width.
Refer to table 15.3 for the range of values that can be used as settings (TSEG1, TSEG2, BRP,
sample point, and SJW) for BCR.
Initialization after Hardware Reset
Section 15 Controller Area Network (HCAN)
Rev. 5.00 Jan 10, 2006 page 563 of 1042
REJ09B0275-0500
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