DF2317VTE25 Renesas Electronics America, DF2317VTE25 Datasheet - Page 173

• Manufacturer Part Number: DF2317VTE25
• Description: MCU 3V 128K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of DF2317VTE25

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: POR, PWM, WDT
• Number Of I /o: 79
• Program Memory Size: 128KB (128K 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 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: HD64F2317VTE25; HD64F2317VTE25

6.1
The chip has a built-in bus controller (BSC) that manages the external address space divided into
eight areas. The bus specifications, such as bus width and number of access states, can be set
independently for each area, enabling multiple memories to be connected easily.
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.
• Manages external address space in area units
• Basic bus interface
• Burst ROM interface
• Idle cycle insertion
• Bus arbitration function
• Other features
⎯ In advanced mode, manages the external space as 8 areas of 2 Mbytes
⎯ Bus specifications can be set independently for each area
⎯ Burst ROM interfaces can be set
⎯ Chip select (CS0 to CS7) can be output for areas 0 to 7
⎯ 8-bit access or 16-bit access can be selected for each area
⎯ 2-state access or 3-state access can be selected for each area
⎯ Program wait states can be inserted for each area
⎯ Burst ROM interface can be set for area 0
⎯ Choice of 1- or 2-state burst access
⎯ An idle cycle can be inserted in case of an external read cycle between different areas
⎯ An idle cycle can be inserted when an external read cycle is immediately followed by an
⎯ Includes a bus arbiter that arbitrates bus mastership among the CPU and DTC
⎯ External bus release function
external write cycle
Overview
Features
Section 6 Bus Controller
Rev.7.00 Feb. 14, 2007 page 139 of 1108
Section 6 Bus Controller
REJ09B0089-0700