DF61657CN35FTV Renesas Electronics America, DF61657CN35FTV Datasheet - Page 771

• Manufacturer Part Number: DF61657CN35FTV
• Description: IC H8SX/1657 MCU FLASH 120TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8SX/1600r

Specifications of DF61657CN35FTV

• Core Processor: H8SX
• Core Size: 32-Bit
• Speed: 35MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 82
• Program Memory Size: 768KB (768K x 8)
• Program Memory Type: FLASH
• Ram Size: 24K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 120-TQFP, 120-VQFP
• For Use With: 3DK1657 - DEV EVAL KIT FOR H8SX/1657
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

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).
The clock pulse generator consists of an oscillator, a PLL (Phase Locked Loop) circuit, a divider,
and selecters. Figure 19.1 shows a block diagram of the clock pulse generat2or.
Clock frequencies can be changed by the PLL circuit and divider in the CPG. Changing the
system clock control register (SCKCR) setting by software can change the clock frequencies.
This LSI supports three types of clocks: a system clock provided to the CPU and bus masters, a
peripheral module clock provided to the peripheral modules, and an external bus clock provided to
the external bus. These clocks can be specified independently. Note, however, that the frequencies
of the peripheral clock and external bus clock are lower than that of the system clock.
EXTAL
XTAL
Oscillator
Figure 19.1 Block Diagram of Clock Pulse Generator
Section 19 Clock Pulse Generator
circuit
PLL
EXTAL × 4
and 1/8)
Divider
(1/1,
1/2,
1/4,
1/1
1/2
1/4
1/8
1/1
1/2
1/4
1/8
1/1
1/2
1/4
1/8
Rev. 2.00 Jun. 28, 2007 Page 745 of 864
Selector
Selector
Selector
SCKCR
SCKCR
SCKCR
Section 19 Clock Pulse Generator
ICK2 to ICK0
PCK2 to PCK0
BCK2 to BCK0
System clock (Iφ)
(to the CPU and
Peripheral module
clock (Pφ)
(to peripheral modules)
External bus clock (Bφ)
(to the Bφ pin)
bus masters)
REJ09B0341-0200