DF2148ATE20 Renesas Electronics America, DF2148ATE20 Datasheet - Page 214

• 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
16-Bit, 3-State Access Space
Figures 6.10 to 6.12 show the bus timing for 16-bit, 3-state access space. When 16-bit access
space is accessed, the upper data bus (D15 to D8) is used for even addresses and the lower data
bus (D7 to D0) for odd addresses.
Wait states can be inserted.
Rev. 4.00 Sep 27, 2006 page 168 of 1130
REJ09B0327-0400
AS/IOS (IOSE = 1)
AS/IOS (IOSE = 0)
Read
Write
Address bus
D15 to D8
D15 to D8
D7 to D0
D7 to D0
Figure 6.10 16-Bit, 3-State Access Space Bus Timing (1)
HWR
LWR
RD
(Even Address Byte Access)
T
1
Bus cycle
High
Undefined
T
2
Valid
T
3
Invalid
Valid