DF61654N50FTV Renesas Electronics America, DF61654N50FTV Datasheet - Page 893

• Manufacturer Part Number: DF61654N50FTV
• Description: IC H8SX/1654 MCU FLASH 120TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8SX/1600r

Specifications of DF61654N50FTV

• Core Processor: H8SX
• Core Size: 32-Bit
• Speed: 50MHz
• Connectivity: I²C, IrDA, SCI, SmartCard, USB
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 75
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 40K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 120-TQFP, 120-VQFP
• For Use With: HS0005KCU11H - EMULATOR E10A-USB H8S(X),SH2(A)3DK1657 - DEV EVAL KIT FOR H8SX/1657
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 21 Clock Pulse Generator
Section 21 Clock Pulse Generator
This LSI has an on-chip clock pulse generator (CPG) that generates the system clock (Iφ),
peripheral module clock (Pφ), and external bus clock (Bφ) and USB clock (cku).
The clock pulse generator consists of an oscillator, divider, PLL (Phase Locked Loop) circuit, and
selector. Figure 21.1 shows a block diagram of the clock pulse generator.
The PLL circuit and divider in the CPG can change the clock frequency. Software changes the
frequency through the setting of the system clock control register (SCKCR).
This LSI supports four types of clocks: a system clock provided to the CPU and bus masters, a
peripheral module clock provided to the peripheral modules, an external bus clock provided to the
external bus, and a USB clock provided to the USB module.
Frequencies of the peripheral module clock, the external bus clock, and the system clock can be
set independently, although the peripheral module clock and the external bus clock operate with
the frequency lower than the system clock frequency.
The USB module requires 48 MHz clock. Set the external clock frequency and the MD_CLK pin
so that the USB clock (cku) frequency becomes 48 MHz.
Note that the MD_CLK pin setting also changes the frequencies of the peripheral module clock,
the external bus clock, and the system clock.
Rev.1.00 Sep. 08, 2005 Page 843 of 966
REJ09B0219-0100