DF2345TE20 Renesas Electronics America, DF2345TE20 Datasheet - Page 641

• Manufacturer Part Number: DF2345TE20
• Description: MCU 5V 128K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of DF2345TE20

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: SCI, SmartCard
• Peripherals: POR, PWM, WDT
• Number Of I /o: 71
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 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: -
• Other names: HD64F2345TE20; HD64F2345TE20

18.1
The H8S/2345 Group has a built-in clock pulse generator (CPG) that generates the system clock
( ), the bus master clock, and internal clocks.
The clock pulse generator consists of an oscillator circuit, a duty adjustment circuit, a medium-
speed clock divider, and a bus master clock selection circuit.
18.1.1
Figure 18.1 shows a block diagram of the clock pulse generator.
EXTAL
XTAL
Overview
Block Diagram
Oscillator
Figure 18.1 Block Diagram of Clock Pulse Generator
Section 18 Clock Pulse Generator
adjustment
circuit
Duty
System clock to
Medium-
divider
pin
speed
Rev. 4.00 Feb 15, 2006 page 615 of 900
Internal clock
to supporting
modules
Section 18 Clock Pulse Generator
/2 to /32
Bus master
selection
SCKCR
circuit
clock
REJ09B0291-0400
Bus master clock
to CPU and DTC
SCK2 to SCK0