R5F61668RD50FPV Renesas Electronics America, R5F61668RD50FPV Datasheet - Page 1263

• Manufacturer Part Number: R5F61668RD50FPV
• Description: MCU 3V 1024K I-TEMP 144-LQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8SX/1600r

Specifications of R5F61668RD50FPV

• Core Processor: H8SX
• Core Size: 16/32-Bit
• Speed: 50MHz
• Connectivity: EBI/EMI, I²C, IrDA, SCI, SmartCard, USB
• Peripherals: DMA, LVD, POR, PWM, WDT
• Number Of I /o: 92
• Program Memory Size: 1MB (1M x 8)
• Program Memory Type: FLASH
• Eeprom Size: -
• Ram Size: 56K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 144-LQFP
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

27.3
The PLL circuit has the function of multiplying the frequency of the clock from the oscillator by a
factor of 4. The frequency multiplication rate is fixed. The phase difference is controlled so that
the timing of the rising edge of the internal clock is the same as that of the EXTAL pin signal.
27.4
The frequency divider divides the PLL clock to generate a 1/2, 1/4, or 1/8 clock. After the bits
ICK2 to ICK0, PCK 2 to PCK0, and BCK2 to BCK0 are updated, this LSI operates with the
updated frequency.
27.5
27.5.1
To supply a clock to the subclock oscillator, connect a 32.768-kHz crystal resonator, as shown in
figure 27.6. The usage notes given in section 27.6.3, Notes on Board Design, apply to the
connection of this crystal resonator.
PLL Circuit
Frequency Divider
Subclock Oscillator
Connecting 32.768 kHz Crystal Resonator
Figure 27.6 Connection Example of 32.768-kHz Crystal Resonator
Note: C
capacitance of the board.
OSC2
OSC1
1
and C
2
are reference values that include the floating
C
C
1
2
Rev. 2.00 Sep. 24, 2008 Page 1229 of 1468
C
1
= C
2
= 15 pF (typ.)
Section 27 Clock Pulse Generator
REJ09B0412-0200