HD64F3048BF25 Renesas Electronics America, HD64F3048BF25 Datasheet - Page 164

• Manufacturer Part Number: HD64F3048BF25
• Description: IC H8 MCU FLASH 128K 100QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of HD64F3048BF25

• 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
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Section 6 Bus Controller
6.3.3
The H8/3048B Group allows either 8-bit access or 16-bit access to be designated for each of areas
7 to 0. An 8-bit-access area uses the upper data bus (D
upper data bus (D
In read access the RD signal applies without distinction to both the upper and lower data bus. In
write access the HWR signal applies to the upper data bus, and the LWR signal applies to the
lower data bus.
Table 6.4 indicates how the two parts of the data bus are used under different access conditions.
Table 6.4
Area
8-bit-access
area
16-bit-access
area
Note: Undetermined data means that unpredictable data is output.
Rev. 3.00 Sep 27, 2006 page 136 of 872
REJ09B0325-0300
Invalid means that the bus is in the input state and the input is ignored.
Data Bus
Access Conditions and Data Bus Usage
Access
Size
—
Byte
Word
15
to D
8
) and lower data bus (D
Read/
Write
Read
Write
Read
Write
Read
Write
Address
—
—
Even
Odd
Even
Odd
—
—
Valid
Strobe
RD
HWR
RD
HWR
LWR
RD
HWR,
LWR
7
to D
0
15
).
to D
Upper Data Bus
(D
Valid
Valid
Invalid
Valid
Undetermined data
Valid
Valid
15
8
to D
). A 16-bit-access area uses both the
8
)
Valid
Lower Data Bus
(D
Invalid
Undetermined data
Invalid
Undetermined data
Valid
Valid
Valid
7
to D
0
)