DF2268FA13V Renesas Electronics America, DF2268FA13V Datasheet - Page 596

• Manufacturer Part Number: DF2268FA13V
• Description: IC H8S/2268 MCU FLASH 100QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2200r

Specifications of DF2268FA13V

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 13MHz
• Connectivity: I²C, SCI, SmartCard
• Peripherals: LCD, POR, PWM, WDT
• Number Of I /o: 67
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 10x10b, D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 21 Clock Pulse Generator
Table 21.1 Damping Resistance Value
Figure 21.3 shows the equivalent circuit of the crystal resonator. Use a crystal resonator that has
the characteristics shown in table 21.2.
Table 21.2 Crystal Resonator Characteristics
21.2.2
An external clock signal can be input as shown in the examples in figure 21.4. If the XTAL pin is
left open, ensure that stray capacitance does not exceed 10 pF. When complementary clock is
input to the XTAL pin, the external clock input should be fixed high in standby mode, subactive
mode, subsleep mode, or watch mode.
Rev. 5.00 Sep. 01, 2009 Page 544 of 656
REJ09B0071-0500
Frequency (MHz)
R
Frequency (MHz)
R
C
d
S
0
(Ω)
max. (pF)
max. (Ω)
External Clock Input
Figure 21.3 Crystal Resonator Equivalent Circuit
2
1 k
2
500
7
Figure 21.4 External Clock Input (Examples)
XTAL
EXTAL
XTAL
EXTAL
XTAL
4
500
4
120
7
(b) Complementary clock input at XTAL pin
L
6
300
6
100
7
(a) XTAL pin left open
C
C
L
0
AT-cut parallel-resonance type
Open
R
s
8
200
8
80
7
External clock input
External clock input
EXTAL
10
100
10
60
7
12
0
12
60
7
16
0
16
50
7
20
0
20
40
7