HD64F3048F16 Renesas Electronics America, HD64F3048F16 Datasheet - Page 609

• Manufacturer Part Number: HD64F3048F16
• Description: IC H8 MCU FLASH 128K 100QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of HD64F3048F16

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 8MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 70
• 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-QFP
• Package: 100PQFP
• Family Name: H8
• Maximum Speed: 16 MHz
• Operating Supply Voltage: 5 V
• Data Bus Width: 16|32 Bit
• Number Of Programmable I/os: 70
• Interface Type: SCI
• On-chip Adc: 8-chx10-bit
• On-chip Dac: 2-chx8-bit
• Number Of Timers: 5
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Section 18 ROM (H8/3048F-ONE: Single Power Supply, H8/3048B Mask ROM Version)
18.2.4
Flash Memory Emulation in RAM
In the H8/3048F-ONE, flash memory programming can be emulated in real time by overlapping
the flash memory with part of RAM (“overlap RAM”). When the emulation block set in RAMCR
is accessed while the emulation function is being executed, data written in the overlap RAM is
read. Emulation should be performed in user mode or user program mode.
SCI
Flash memory
RAM
Emulation block
Overlap RAM
(emulation is performed
on data written in RAM)
Application program
Execution state
Figure 18.3 Reading Overlap RAM Data in User Mode or User Program Mode
When overlap RAM data is confirmed, clear the RAMS bit to release RAM overlap, and actually
perform writes to the flash memory.
When the programming control program is transferred to RAM in on-board programming mode,
ensure that the transfer destination and the overlap RAM do not overlap, as this will cause data in
the overlap RAM to be rewritten.
Rev. 3.00 Sep 27, 2006 page 581 of 872
REJ09B0325-0300