DF2398F20 Renesas Electronics America, DF2398F20 Datasheet - Page 22

• Manufacturer Part Number: DF2398F20
• Description: IC H8S MCU FLASH 256K 128QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of DF2398F20

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 87
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 128-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: HD64F2398F20; HD64F2398F20

Section 1 CPU
Exception Vector Table and Memory Indirect Branch Addresses: In normal mode the top area
starting at H'0000 is allocated to the exception vector table. One branch address is stored per
16 bits (figure 1.2). The exception vector table differs depending on the microcontroller. Refer to
the relevant microcontroller hardware manual for further information.
The memory indirect addressing mode (@@aa:8) employed in the JMP and JSR instructions uses
an 8-bit absolute address included in the instruction code to specify a memory operand that
contains a branch address. In normal mode the operand is a 16-bit word operand, providing a
16-bit branch address. Branch addresses can be stored in the top area from H'0000 to H'00FF.
Note that this area is also used for the exception vector table.
Rev. 4.00 Feb 24, 2006 page 6 of 322
REJ09B0139-0400
H'0000
H'0001
H'0002
H'0003
H'0004
H'0005
H'0006
H'0007
H'0008
H'0009
H'000A
H'000B
Figure 1.2 Exception Vector Table (Normal Mode)
Power-on reset exception vector
Manual reset exception vector
(Reserved for system use)
Exception vector 1
Exception vector 2
Exception
vector table