DF2148BTE20 Renesas Electronics America, DF2148BTE20 Datasheet - Page 182
DF2148BTE20
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
HD64F2148BTE20
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF2148BTE20V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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Section 6 Bus Controller (BSC)
Bit
1
0
6.4
6.4.1
The external address space bus specifications consist of three elements: Bus width, the number of
access states, and the wait mode and the number of program wait states. The bus width and the
number of access states for on-chip memory and internal I/O registers are fixed, and are not
affected by the bus controller settings.
Bus Width: A bus width of 8 or 16 bits can be selected via the ABW bit in WSCR.
Number of Access States: Two or three access states can be selected via the AST bit in WSCR.
When the 2-state access space is designated, wait-state insertion is disabled.
In the burst ROM interface, the number of access states is determined regardless of the AST bit
setting.
Wait Mode and Number of Program Wait States: When a 3-state access space is designated by
the AST bit in WSCR, the wait mode and the number of program wait states to be inserted
automatically is selected by the WMS1, WMS0, WC1, and WC0 bits in WSCR. From 0 to 3
program wait states can be selected.
Rev. 3.00 Mar 21, 2006 page 126 of 788
REJ09B0300-0300
Bit Name
WC1
WC0
Bus Control
Bus Specifications
Initial Value
1
1
R/W
R/W
R/W
Description
Wait Count 1, 0
Select the number of program wait states to be
inserted when the external address space is accessed
while the AST bit is set to 1.
00: Program wait state is not inserted
01: 1 program wait state is inserted
10: 2 program wait states are inserted
11: 3 program wait states are inserted
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