DF2398TE20 Renesas Electronics America, DF2398TE20 Datasheet - Page 654

• Manufacturer Part Number: DF2398TE20
• Description: IC H8S MCU FLASH 256K 120TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of DF2398TE20

• 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: 120-TQFP, 120-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: HD64F2398TE20; HD64F2398TE20

19.15.5 Flash Memory Emulation in RAM
Reading Overlap RAM Data in User Mode and User Program Mode: Emulation should be performed in user mode or
user program mode. When the emulation block set in RAMER is accessed while the emulation function is being executed,
data written in the overlap RAM is read.
Writing Overlap RAM Data in User Program Mode: When overlap RAM data is confirmed, the RAMS bit is cleared,
RAM overlap is released, and writes should actually be performed to the flash memory.
When the programming control program is transferred to RAM, ensure that the transfer destination and the overlap RAM
do not overlap, as this will cause data in the overlap RAM to be rewritten.
Rev.6.00 Oct.28.2004 page 624 of 1016
REJ09B0138-0600H
Figure 19-40 Reading Overlap RAM Data in User Mode and User Program Mode
Figure 19-41 Writing Overlap RAM Data in User Program Mode
Application program
Application program
Programming data
Emulation block
Execution state
Flash memory
Flash memory
(emulation is performed
on data written in RAM)
Programming control
(programming data)
Execution state
Overlap RAM
Overlap RAM
program
RAM
RAM
SCI
SCI