DF2148ATE20 Renesas Electronics America, DF2148ATE20 Datasheet - Page 203
DF2148ATE20
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
HD64F2148ATE20
Available stocks
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Company:
Part Number:
DF2148ATE20IV
Manufacturer:
Renesas Electronics America
Quantity:
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DF2148ATE20IV
Manufacturer:
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Bits 1 and 0—Wait Count 1 and 0 (WC1, WC0): These bits select the number of program wait
states when external memory space is accessed while the AST bit is set to 1.
6.3
6.3.1
The external space bus specifications consist of three elements: bus width, number of access
states, and wait mode and number of program wait states.
The bus width and number of access states for on-chip memory and internal I/O registers are
fixed, and are not affected by the bus controller.
Bus Width: A bus width of 8 or 16 bits can be selected with the ABW bit.
Number of Access States: Two or three access states can be selected with the AST bit.
When 2-state access space is designated, wait insertion is disabled. The number of access states on
the burst ROM interface is determined without regard to the AST bit setting.
Wait Mode and Number of Program Wait States: When 3-state access space is designated by
the AST bit, the wait mode and the number of program wait states to be inserted automatically is
selected with WMS1, WMS0, WC1, and WC0. From 0 to 3 program wait states can be selected.
Table 6.3 shows the bus specifications for each basic bus interface area.
Bit 1
WC1
0
1
Overview of Bus Control
Bus Specifications
Bit 0
WC0
0
1
0
1
Description
No program wait states are inserted
1 program wait state is inserted in external memory space accesses
2 program wait states are inserted in external memory space accesses
3 program wait states are inserted in external memory space accesses
Rev. 4.00 Sep 27, 2006 page 157 of 1130
Section 6 Bus Controller
REJ09B0327-0400
(Initial value)
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