D12312SVTEBL25 Renesas Electronics America, D12312SVTEBL25 Datasheet - Page 669

• Manufacturer Part Number: D12312SVTEBL25
• Description: IC H8S MCU ROMLESS 100-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of D12312SVTEBL25

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: POR, PWM, WDT
• Number Of I /o: 70
• Program Memory Type: ROMless
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 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: -
• Program Memory Size: -
• Other names: HD6412312SVTEBL25; HD6412312SVTEBL25

Writing Overlap RAM 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.
17.13.6 Differences between Boot Mode and User Program Mode
Table 17.25 Differences between Boot Mode and User Program Mode
Entire memory erase
Block erase
Programming control program *
Note: * To be provided by the user, in accordance with the recommended algorithm.
Figure 17.38 Writing Overlap RAM Data in User Program Mode
Application program
Programming data
Flash memory
Boot Mode
Yes
No
Program/program-verify
Rev.7.00 Feb. 14, 2007 page 635 of 1108
Programming control
(programming data)
Execution state
User Program Mode
Yes
Erase/erase-verify/program/
program-verify/emulation
Yes
Overlap RAM
program
RAM
SCI
REJ09B0089-0700
Section 17 ROM