DF2148RTE20IV Renesas Electronics America, DF2148RTE20IV Datasheet - Page 702

• Manufacturer Part Number: DF2148RTE20IV
• Description: MCU 5V 128K I-TEMP,PB-FREE, 100-
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2148RTE20IV

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: Host Interface, I²C, IrDA, SCI
• Peripherals: POR, 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 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 22 ROM
22.6.1
When boot mode is used, the flash memory programming control program must be prepared in the
host beforehand. The channel 1 SCI to be used is set to asynchronous mode.
When a reset-start is executed after this group MCU’s pins have been set to boot mode, the boot
program built into the MCU is started and the programming control program prepared in the host
is serially transmitted to the MCU via the SCI. In the MCU, the programming control program
received via the SCI is written into the programming control program area in on-chip RAM. After
the transfer is completed, control branches to the start address of the programming control
program area and the programming control program execution state is entered (flash memory
programming is performed).
The transferred programming control program must therefore include coding that follows the
programming algorithm given later.
The system configuration in boot mode is shown in figure 22.7, and the boot program mode
execution procedure in figure 22.8.
Rev. 4.00 Sep 27, 2006 page 656 of 1130
REJ09B0327-0400
Boot Mode
Host
(Mask ROM Version, H8S/2148 F-ZTAT, H8S/2147N F-ZTAT, H8S/2144 F-ZTAT, and H8S/2142 F-ZTAT)
Figure 22.7 System Configuration in Boot Mode
Verify data transmission
Write data reception
RxD1
TxD1
SCI1
This group chip
Flash memory
On-chip RAM