HD64F3067RF20 Renesas Electronics America, HD64F3067RF20 Datasheet - Page 667
HD64F3067RF20
Manufacturer Part Number
HD64F3067RF20
Description
IC H8 MCU FLASH 128K 100-QFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300Hr
Datasheet
1.DF3067RF20VTR.pdf
(965 pages)
Specifications of HD64F3067RF20
Core Processor
H8/300H
Core Size
16-Bit
Speed
20MHz
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
20 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
7
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Available stocks
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18.7
Erasing and programming the flash memory takes time, which can make it difficult to tune
parameters and other data in real time. In this case, overlapping part (H'FFF000 to H'FFF3FF) of
RAM onto a small block area of flash memory can be performed to emulate real-time
reprogramming of flash memory. This RAM reassignment is performed using bits 3 to 1 in the
RAM control register (RAMCR).
After the RAM area change, two areas can be accessed: the overlapped flash memory area and the
original RAM area (H'FFF000 to H'FFF3FF). For a description of the RAMCR and RAM area
setting procedure, see section 18.3.3 RAM Control Register (RAMCR).
Example of real-time emulation of flash memory
An example of RAM area H'FFF000 to H'FFF3FF overlapping EB2 (H'000800 to H'000BFF)
flash memory area is shown below.
Block area
area
EB2
Flash Memory Emulation by RAM
H'000000
H'000800
H'000BFF
H'000FFF
Figure 18.14 Example of RAM Overlapping Operation
Flash memory
space
H'FFEF20
H'FFEFFF
H'FFF000
H'FFF3FF
H'FFF400
H'FFFF1F
*
Overlapping RAM
(Image RAM area)
(Real RAM area)
RAM area
On-chip
<Procedure>
1
2
3
4
Note:
Part (H'FFF000 to H'FFF3FF) of RAM
overlaps the area (EB2) needed to carry out
real-time reprogramming.
(Bits 3 to 1 in the RAMCR are set to 1, 1, 0
and the overlap flash memory area (EB2)
is selected.)
Real-time reprogramming is carried out using
the overlapping RAM.
After the reprogramming data is verified, RAM
overlapping is released. (RAMS bits are cleared.)
The data written to H'FFF000 to H'FFF3FF in RAM
are written to flash memory space.
Rev. 4.00 Jan 26, 2006 page 643 of 938
*
When part (H'FFF000 to H'FFF3FF) of RAM
overlapped a small block area of flash
memory, the overlapped flash memory
area cannot be accessed. This area can
be accessed by releasing overlapping.
REJ09B0276-0400
Section 18 ROM
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