DF2148BTE20 Renesas Electronics America, DF2148BTE20 Datasheet - Page 192

• Manufacturer Part Number: DF2148BTE20
• Description: IC H8S MCU FLASH 128K 100-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2148BTE20

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, IrDA, SCI, X-Bus
• Peripherals: 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): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: HD64F2148BTE20; HD64F2148BTE20

Section 6 Bus Controller (BSC)
16-Bit, 3-State Access Space: Figures 6.10 to 6.12 show bus timings for a 16-bit, 3-state access
space. When a 16-bit access space is accessed, the upper half (D15 to D8) of the data bus is used
for even addresses, and the lower half (D7 to D0) for odd addresses. Wait states can be inserted.
Rev. 3.00 Mar 21, 2006 page 136 of 788
REJ09B0300-0300
Figure 6.10 Bus Timing for 16-Bit, 3-State Access Space (Even Byte Access)
Read
Write
AS/IOS (IOSE = 0)
AS/IOS (IOSE = 1)
Address bus
D15 to D8
D15 to D8
D7 to D0
D7 to D0
HWR
LWR
RD
T
1
High level
Bus cycle
T
Undefined
2
Valid
T
3
Invalid
Valid