DF2148BTE20 Renesas Electronics America, DF2148BTE20 Datasheet - Page 690
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 24 Clock Pulse Generator
24.1
Clock pulses can be supplied either by connecting a crystal resonator, or by providing external
clock input.
24.1.1
Figure 24.2 shows a typical method of connecting a crystal resonator. An appropriate damping
resistance R
should be used.
Figure 24.3 shows the equivalent circuit of a crystal resonator. A resonator having the
characteristics given in table 24.2 should be used.
A crystal resonator with frequency identical to that of the system clock ( ) should be used.
Table 24.1 Damping Resistance Values
Frequency (MHz)
R
Rev. 3.00 Mar 21, 2006 page 634 of 788
REJ09B0300-0300
d
( )
Oscillator
Connecting Crystal Resonator
d
, given in table 24.1, should be used. An AT-cut parallel-resonance crystal resonator
XTAL
Figure 24.2 Typical Connection to Crystal Resonator
Figure 24.3 Equivalent Circuit of Crystal Resonator
2
1 k
EXTAL
XTAL
L
R
4
500
d
C
C
L
0
C
C
AT-cut parallel-resonance crystal resonator
L1
L2
8
200
R
s
EXTAL
10
0
C
L1
= C
L2
= 10 to 22 pF
12
0
16
0
20
0
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