DF2398TE20 Renesas Electronics America, DF2398TE20 Datasheet - Page 609

• 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

Flash Memory Emulation in RAM
Reading Overlap 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 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.
Figure 19-11 Reading Overlap Data in User Mode and User Program Mode
Application program
Application program
Programming data
Emulation block
Execution state
Figure 19-12 Writing Overlap Data in User Program Mode
Flash memory
Flash memory
(emulation is performed
program execution state
on data written in RAM)
Programming control
(programming data)
Overlap RAM
Overlap RAM
Rev.6.00 Oct.28.2004 page 579 of 1016
RAM
RAM
SCI
SCI
REJ09B0138-0600H