DF2148BTE20 Renesas Electronics America, DF2148BTE20 Datasheet - Page 679

• Manufacturer Part Number: DF2148BTE20
• Description: IC H8S MCU FLASH 128K 100-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2148BTE20

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, IrDA, SCI, X-Bus
• Peripherals: PWM, WDT
• Number Of I /o: 74
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K 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: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: HD64F2148BTE20; HD64F2148BTE20

23.8
A software method, using the CPU, is employed to program and erase flash memory in the on-
board programming modes. Depending on the FLMCR1 and FLMCR2 settings, the flash memory
operates in one of the following four modes: program mode, program-verify mode, erase mode,
and erase-verify mode. The programming control program in boot mode and the user
program/erase control program in user program mode use these operating modes in combination to
perform programming/erasing. Flash memory programming and erasing should be performed in
accordance with the descriptions in section 23.8.1, Program/Program-Verify and section 23.8.2,
Erase/Erase-Verify, respectively.
Figure 23.10 Programming/Erasing Flowchart Example in User Program Mode
Flash Memory Programming/Erasing
Execute user program/erase control
program (flash memory rewrite)
erase control program to RAM
erase control program in RAM
Branch to user program/
Branch to flash memory
Transfer user program/
application program
Program/erase?
Reset-start
Yes
No
Branch to flash memory
Rev. 3.00 Mar 21, 2006 page 623 of 788
application program
REJ09B0300-0300
Section 23 ROM