D12312SVF20V Renesas Electronics America, D12312SVF20V Datasheet - Page 775

• Manufacturer Part Number: D12312SVF20V
• Description: IC H8S/2312S MCU ROMLESS 100QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of D12312SVF20V

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• 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-QFP
• For Use With: EDK2329 - DEV EVALUATION KIT H8S/2329
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

17.26
To provide real-time emulation in RAM of data that is to be written to the flash memory, a part of
the RAM can be overlaid on an area of flash memory (user MAT) that has been specified by the
RAM emulation register (RAMER). After the RAMER setting is made, the RAM is accessible in
both the user MAT area and as the RAM area that has been overlaid on the user MAT area. Such
emulation is possible in both user mode and user-program mode.
Figure 17.76 shows an example of the emulation of realtime programming of the user MAT area.
Flash Memory Emulation in RAM
Figure 17.76 Emulation of Flash Memory in RAM
No
Execute application program
Start of emulation program
End of emulation program
Write the data for tuning to
with the emulated block
Program the user MAT
Cancel RAMER setting
the overlaid RAM area
Tuning OK?
Set RAMER
Yes
Rev.7.00 Feb. 14, 2007 page 741 of 1108
REJ09B0089-0700
Section 17 ROM