DF61657CN35FTV Renesas Electronics America, DF61657CN35FTV Datasheet - Page 775

• Manufacturer Part Number: DF61657CN35FTV
• Description: IC H8SX/1657 MCU FLASH 120TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8SX/1600r

Specifications of DF61657CN35FTV

• Core Processor: H8SX
• Core Size: 32-Bit
• Speed: 35MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 82
• Program Memory Size: 768KB (768K x 8)
• Program Memory Type: FLASH
• Ram Size: 24K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 120-TQFP, 120-VQFP
• For Use With: 3DK1657 - DEV EVAL KIT FOR H8SX/1657
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

19.2
Clock pulses can be supplied by connecting a crystal resonator, or by input of an external clock.
19.2.1
A crystal resonator can be connected as shown in the example in figure 19.2. Select the damping
resistance R
When the clock is provided by connecting a crystal resonator, a crystal resonator having a
frequency of 8 to 18 MHz should be connected.
Table 19.1 Damping Resistance Value
Figure 19.3 shows an equivalent circuit of the crystal resonator. Use a crystal resonator that has
the characteristics shown in table 19.2.
Frequency (MHz)
R
d
(Ω)
Oscillator
Connecting Crystal Resonator
d
according to table 19.1. An AT-cut parallel-resonance type should be used.
XTAL
Figure 19.2 Connection of Crystal Resonator (Example)
8
200
Figure 19.3 Crystal Resonator Equivalent Circuit
EXTAL
XTAL
L
R
d
C
C
C
C
L
0
L1
L2
12
0
R
s
AT-cut parallel-resonance type
C
L1
= C
Rev. 2.00 Jun. 28, 2007 Page 749 of 864
L2
= 10 to 22 pF
Section 19 Clock Pulse Generator
EXTAL
18
0
REJ09B0341-0200