HD64F2638F20J Renesas Electronics America, HD64F2638F20J Datasheet - Page 887
HD64F2638F20J
Manufacturer Part Number
HD64F2638F20J
Description
IC H8S MCU FLASH 256K 128-QFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2600r
Specifications of HD64F2638F20J
Core Processor
H8S/2600
Core Size
16-Bit
Speed
20MHz
Connectivity
CAN, SCI, SmartCard
Peripherals
Motor Control PWM, POR, PWM, WDT
Number Of I /o
72
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
16K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 12x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
128-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HD64F2638F20J
Manufacturer:
PENESAS
Quantity:
252
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H8S/2639, H8S/2638, H8S/2636,
H8S/2630, H8S/2635 Group
21B.11 Flash Memory Emulation in RAM
Making a setting in the RAM emulation register (RAMER) enables part of RAM to be overlapped
onto the flash memory area so that data to be written to flash memory can be emulated in RAM in
real time. After the RAMER setting has been made, accesses cannot be made from the flash
memory area or the RAM area overlapping flash memory. Emulation can be performed in user
mode and user program mode. Figure 21B-15 shows an example of emulation of real-time flash
memory programming.
REJ09B0103-0800 Rev. 8.00
May 28, 2010
Figure 21B-15 Flowchart for Flash Memory Emulation in RAM
No
Write to flash memory emulation
Execute application program
Write tuning data to overlap
Start of emulation program
End of emulation program
Clear RAMER
Set RAMER
Tuning OK?
RAM
block
(H8S/2638 Group, H8S/2639 Group, H8S/2630 Group)
Yes
Section 21B ROM
Page 837 of 1458
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