DF2148ATE20 Renesas Electronics America, DF2148ATE20 Datasheet - Page 197

• 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

6.1
This LSI have a built-in bus controller (BSC) that allows external address space bus specifications,
such as bus width and number of access states, to be set.
The bus controller also has a bus arbitration function, and controls the operation of the internal bus
masters: the CPU and data transfer controller (DTC).
6.1.1
The features of the bus controller are listed below.
Basic bus interface
Burst ROM interface
Idle cycle insertion
Bus arbitration function
2-state access or 3-state access can be selected
Program wait states can be inserted
External space can be designated as ROM interface space
1-state or 2-state burst access can be selected
An idle cycle can be inserted when an external write cycle immediately follows an external
read cycle
Includes a bus arbiter that arbitrates bus mastership between the CPU and DTC
Features
Overview
Section 6 Bus Controller
Rev. 4.00 Sep 27, 2006 page 151 of 1130
Section 6 Bus Controller
REJ09B0327-0400