D12312SVTEBL25 Renesas Electronics America, D12312SVTEBL25 Datasheet - Page 831

• Manufacturer Part Number: D12312SVTEBL25
• Description: IC H8S MCU ROMLESS 100-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of D12312SVTEBL25

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: POR, PWM, WDT
• Number Of I /o: 70
• Program Memory Type: ROMless
• 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: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Other names: HD6412312SVTEBL25; HD6412312SVTEBL25

Crystal Resonator: Figure 18.3 shows the equivalent circuit of the crystal resonator. Use a crystal
resonator that has the characteristics shown in table 18.3 and the same resonance frequency as the
system clock (φ).
Table 18.3 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 18.4.
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 18.3 Crystal Resonator Equivalent Circuit
Figure 18.4 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.7.00 Feb. 14, 2007 page 797 of 1108
Chip
60
12
7
XTAL
EXTAL
Section 18 Clock Pulse Generator
EXTAL
16
50
7
20
40
7
REJ09B0089-0700
25
40
7