HD64F3026X25 Renesas Electronics America, HD64F3026X25 Datasheet - Page 580

• Manufacturer Part Number: HD64F3026X25
• Description: MCU 3V 256K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of HD64F3026X25

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 3 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: -

Section 18 Flash Memory [H8/3024F-ZTAT Version]
Bit 3—RAM Select (RAMS): Used with bits 2 to 1 to reassign an area to RAM (see table 18.5).
The initial setting for this bit is 0 in modes 5, 6, and 7 (internal flash memory enabled) and
programming is enabled. * In modes other than 5 to 7, 0 is always read and writing is disabled.
This bit is initialized by a reset and in hardware standby mode. It is not initialized in software
standby mode.
When 1 is written to the RAMS bit, all flash memory blocks are protected from programming and
erasing.
Bits 2 and 1—RAM2 and RAM1: These bits are used with bit 3 to reassign an area to RAM (see
table 18.5). The initial setting for this bit is 0 in modes 5, 6, and 7 (internal flash memory enabled)
and programming is enabled. * In modes other than 5 to 7, 0 is always read and writing is disabled.
These bits are initialized by a reset and in hardware standby mode. They are not initialized in
software standby mode.
Bit 0—Reserved: This bit cannot be modified and is always read as 1.
Note: * Flash memory emulation by RAM is not supported for mode 6 (single chip normal mode),
Table 18.5 RAM Area Setting
RAM Area
H'FFF000–H'FFF3FF
H'000000–H'0003FF
H'000400–H'0007FF
H'000800–H'000BFF
H'000C00–H'000FFF
Rev. 2.00 Sep 20, 2005 page 540 of 800
REJ09B0260-0200
so programming is possible, but do not set 1.
When performing flash memory emulation by RAM, the RAME bit in SYSCR must be set
to 1.
Bit 3
RAMS
0
1
1
1
1
Bit 2
RAM2
0/1
0
0
1
1
Bit 1
RAM1
0/1
0
1
0
1
RAM Emulation Status
No emulation
Mapping RAM