DF2148RTE20IV Renesas Electronics America, DF2148RTE20IV Datasheet - Page 202

• Manufacturer Part Number: DF2148RTE20IV
• Description: MCU 5V 128K I-TEMP,PB-FREE, 100-
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2148RTE20IV

• 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: -40°C ~ 85°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 6 Bus Controller
Bit 7—RAM Select (RAMS)/Bit 6—RAM Area Setting (RAM0): Reserved bits. Always write
0 when writing to these bits in the A-mask version.
Bit 5—Bus Width Control (ABW): Specifies whether the external memory space is 8-bit access
space or 16-bit access space.
Bit 5
ABW
0
1
Bit 4—Access State Control (AST): Specifies whether the external memory space is 2-state
access space or 3-state access space, and simultaneously enables or disables wait state insertion.
Bit 4
AST
0
1
Bits 3 and 2—Wait Mode Select 1 and 0 (WMS1, WMS0): These bits select the wait mode
when external memory space is accessed while the AST bit is set to 1.
Bit 3
WMS1
0
1
Rev. 4.00 Sep 27, 2006 page 156 of 1130
REJ09B0327-0400
Description
External memory space is designated as 16-bit access space
External memory space is designated as 8-bit access space
Description
External memory space is designated as 2-state access space
Wait state insertion in external memory space accesses is disabled
External memory space is designated as 3-state access space
Wait state insertion in external memory space accesses is enabled
Bit 2
WMS0
0
1
0
1
Description
Program wait mode
Wait-disabled mode
Pin wait mode
Pin auto-wait mode
(Initial value)
(Initial value)
(Initial value)