HD64F2338VFC25 Renesas Electronics America, HD64F2338VFC25 Datasheet - Page 188

• Manufacturer Part Number: HD64F2338VFC25
• Description: MCU 3V 256K 144-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of HD64F2338VFC25

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 106
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 12x10b; D/A 4x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 144-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

6.4.3
Table 6.4 shows the data buses used and valid strobes for the access spaces.
In a read, the RD signal is valid without discrimination between the upper and lower halves of the
data bus.
In a write, the HWR signal is valid for the upper half of the data bus, and the LWR signal for the
lower half.
Table 6.4
Area
Note: Hi-Z: High impedance
Rev.4.00 Sep. 07, 2007 Page 156 of 1210
REJ09B0245-0400
8-bit access
space
16-bit access
space
Invalid: Input state; input value is ignored.
Valid Strobes
Data Buses Used and Valid Strobes
Access
Size
Word
Byte
Byte
Read/
Write
Read
Write
Read
Write
Read
Write
Address
—
—
Even
Odd
Even
Odd
—
—
Valid
Strobe
LWR
RD
HWR, LWR Valid
RD
HWR
RD
HWR
Upper Data Bus
(D
Hi-Z
Valid
Valid
Valid
Invalid
Valid
15
to D
8
)
Lower Data Bus
(D
Valid
Valid
Valid
Invalid
Hi-Z
Invalid
Valid
Hi-Z
7
to D
0
)