DF2505BR26DV Renesas Electronics America, DF2505BR26DV Datasheet - Page 747

• Manufacturer Part Number: DF2505BR26DV
• Description: IC H8S/2505 MCU FLASH 176-LFBGA
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2500r

Specifications of DF2505BR26DV

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 26MHz
• Connectivity: I²C, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 104
• Program Memory Size: 384KB (384K x 8)
• Program Memory Type: FLASH
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 16x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 176-LFBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

20.4
When the pin is set in on-board programming mode and the reset start is executed, the on-board
programming state that can program/erase the on-chip flash memory is entered. On-board
programming mode has three operating modes: user program mode, user boot mode, and boot
mode.
For details of the pin setting for entering each mode, see table 20.1. For details of the state
transition of each mode for flash memory, see figure 20.2.
20.4.1
Boot mode executes programming/erasing user MAT and user boot MAT by means of the control
command and program data transmitted from the host using the on-chip SCI. The tool for
transmitting the control command and program data must be prepared in the host. The SCI
communication mode is set to asynchronous mode. When reset start is executed after this LSI’s
pin is set in boot mode, the boot program in the microcomputer is initiated. After the SCI bit rate
is automatically adjusted, the communication with the host is executed by means of the control
command method.
The system configuration diagram in boot mode is shown in figure 20.6. For details on the pin
setting in boot mode, see table 20.1. The NMI and other interrupts are ignored in boot mode.
However, the NMI and other interrupts should be disabled in the user system.
On-Board Programming Mode
Boot Mode
tool and program
programming
Host
Boot
data
Figure 20.6 System Configuration in Boot Mode
Control command, program data
Reply response
analysis execution
Control command,
software (on-chip)
RxD0
TxD0
On-chip SCI_0
Rev. 6.00 Sep. 24, 2009 Page 699 of 928
This LSI
On-chip RAM
Section 20 Flash Memory
memory
Flash
REJ09B0099-0600