DF2398TE20 Renesas Electronics America, DF2398TE20 Datasheet - Page 667

• 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

Notes: 1. Mode pins input must satisfy the mode programming setup time (t
19.17.2 User Program Mode
When set to user program mode, the chip can program and erase its flash memory by executing a user program/erase
control program. Therefore, on-board reprogramming of the on-chip flash memory can be carried out by providing on-
board means supply of programming data, and storing a program/erase control program in part of the program area if
necessary.
To select user program mode, select a mode that enables the on-chip flash memory (mode 6 or 7). In this mode, on-chip
supporting modules other than flash memory operate as they normally would in modes 6 and 7.
The flash memory itself cannot be read while the SWE bit is set to 1 to perform programming or erasing, so the control
program that performs programming and erasing should be run in on-chip RAM or external memory. When the program is
located in external memory, an instruction for programming the flash memory and the following instruction should be
located in on-chip RAM.
Figure 19-47 shows the procedure for executing the program/erase control program when transferred to on-chip RAM.
Do not change the mode pin input levels in boot mode.
If the mode pin input levels are changed (for example, from low to high) during a reset, the state of ports with
multiplexed address functions and bus control output pins (AS, RD, HWR) will change according to the change in the
microcomputer’s operating mode*
Therefore, care must be taken to make pin settings to prevent these pins from becoming output signal pins during a
reset, or to prevent collision with signals outside the microcomputer.
2. See Appendix D, Pin States.
timing.
Note: The watchdog timer should be activated to prevent overprogramming or overerasing
due to program runaway, etc.
Figure 19-47 User Program Mode Execution Procedure
2
.
Write the transfer program
(and the program/erase control
program if necessary) beforehand
Branch to flash memory application
program (flash memory rewriting)
Branch to program/erase control
Transfer program/erase control
Execute program/erase control
MD2, MD1, MD0 = 110, 111
program in RAM area
program to RAM
Reset-start
program
MDS
= 200 ns) with respect to the reset release
Rev.6.00 Oct.28.2004 page 637 of 1016
REJ09B0138-0600H