DF2328BVF25V Renesas Electronics America, DF2328BVF25V Datasheet - Page 947

• Manufacturer Part Number: DF2328BVF25V
• Description: IC H8S MCU FLASH 256K 128QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of DF2328BVF25V

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 87
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 128-QFP
• For Use With: EDK2329 - DEV EVALUATION KIT H8S/2329
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Other names: HD64F2328BVF25V

Crystal Resonator: Figure 20.3 shows the equivalent circuit of the crystal resonator. Use a crystal
resonator that has the characteristics shown in table 20.3 and the same resonance frequency as the
system clock (φ).
Table 20.3 Crystal Resonator Characteristics
Frequency (MHz)
R
C
Notes on Board Design: When a crystal resonator is connected, the following points should be
noted:
Other signal lines should be routed away from the oscillator circuit to prevent induction from
interfering with correct oscillation. See figure 20.4.
When designing the board, place the crystal resonator and its load capacitors as close as possible
to the XTAL and EXTAL pins.
S
0
max (pF)
max (Ω)
XTAL
Avoid
Figure 20.3 Crystal Resonator Equivalent Circuit
Figure 20.4 Example of Incorrect Board Design
2
500
7
C
C
L2
L1
L
Signal A Signal B
4
120
7
C
C
L
0
8
80
7
AT-cut parallel-resonance type
R
s
Rev.6.00 Sep. 27, 2007 Page 915 of 1268
Chip
60
12
7
XTAL
EXTAL
Section 20 Clock Pulse Generator
EXTAL
16
50
7
20
40
7
REJ09B0220-0600
25
40
7