DF2148ATE20 Renesas Electronics America, DF2148ATE20 Datasheet - Page 208

• Manufacturer Part Number: DF2148ATE20
• Description: IC H8S MCU FLASH 128K 100-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2148ATE20

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: Host Interface, I²C, IrDA, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 74
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 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: -
• Other names: HD64F2148ATE20; HD64F2148ATE20

Section 6 Bus Controller
6.4.3
Table 6.5 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 6.5
Area
8-bit access
space
16-bit access
space
Legend:
Undefined: Undefined data is output.
Invalid:
Port, etc.: Pins are used as port or on-chip supporting module input/output pins, and not as data
Rev. 4.00 Sep 27, 2006 page 162 of 1130
REJ09B0327-0400
Valid Strobes
Input state; input value is ignored.
bus pins.
Data Buses Used and Valid Strobes
Access
Size
Byte
Byte
Word
Read/
Write
Read
Write
Read
Write
Read
Write
Address
—
—
Even
Odd
Even
Odd
—
—
Valid
Strobe
RD
HWR
RD
HWR
LWR
RD
HWR, LWR Valid
Upper Data Bus
(D15 to D8)
Valid
Valid
Invalid
Valid
Undefined
Valid
Lower Data Bus
(D7 to D0)
Port, etc.
Port, etc.
Invalid
Valid
Undefined
Valid
Valid
Valid