HD6417712BPV Renesas Electronics America, HD6417712BPV Datasheet - Page 572

• Manufacturer Part Number: HD6417712BPV
• Description: MPU 1.5/3.3V 0K PB-FREE 256-BGA
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH Ethernetr

Specifications of HD6417712BPV

• Core Processor: SH-3 DSP
• Core Size: 32-Bit
• Speed: 200MHz
• Connectivity: EBI/EMI, Ethernet, FIFO, SCI, SIO
• Peripherals: DMA, POR, WDT
• Number Of I /o: 24
• Program Memory Type: ROMless
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.4 V ~ 1.6 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 256-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

Section 15 Realtime Clock (RTC)
15.4.5
Crystal oscillator circuit constants (recommended values) are shown in table 15.2, and the RTC
crystal oscillator circuit in figure 15.5.
Table 15.2 Recommended Oscillator Circuit Constants (Recommended Values)
Rev. 1.00 Dec. 27, 2005 Page 528 of 932
REJ09B0269-0100
f
32.768 kHz
osc
Notes: 1. Select either the C
Crystal Oscillator Circuit
SH7712
2. Built-in resistance value R
3. C
4. The crystal oscillation settling time depends on the mounted circuit constants,
5. Place the crystal resonator and load capacitors C
6. Ensure that the crystal resonator connection pin (EXTAL2, XTAL2) wiring is
according to requirements such as frequency range, degree of stability, etc.
using a ground plane.
stray capacitance, etc., and should be decided after consultation with the crystal
resonator manufacturer.
to the chip.
(Correct oscillation may not be possible if there is externally induced noise in the
EXTAL2 and XTAL2 pins.)
routed as far away as possible from other power lines (except GND) and signal
lines.
in
Figure 15.5 Example of Crystal Oscillator Circuit Connection
and C
out
values include stray capacitance due to the wiring. Take care when
EXTAL2
C
in
in
C
10 to 22 pF
in
or C
out
R
f
f
(Typ value) = 10 MΩ, R
side for frequency adjustment variable capacitor
XTAL
XTAL2
R
D
C
out
in
D
and C
C
10 to 22 pF
(Typ value) = 400 kΩ
out
out
as close as possible