DF2148ATE20 Renesas Electronics America, DF2148ATE20 Datasheet - Page 777

• Manufacturer Part Number: DF2148ATE20
• Description: IC H8S MCU FLASH 128K 100-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2148ATE20

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: Host Interface, I²C, IrDA, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 74
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 4 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: HD64F2148ATE20; HD64F2148ATE20

24.1
This LSI have 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, clock
selection circuit, medium-speed clock divider, bus master clock selection circuit, subclock input
circuit, and waveform shaping circuit.
24.1.1
Figure 24.1 shows a block diagram of the clock pulse generator.
EXTAL
XTAL
EXCL
Overview
Block Diagram
input circuit
Oscillator
Subclock
Figure 24.1 Block Diagram of Clock Pulse Generator
Section 24 Clock Pulse Generator
adjustment
Waveform
shaping
circuit
circuit
Duty
WDT1 count clock
SUB
selection
circuit
Clock
System clock
To
pin
Rev. 4.00 Sep 27, 2006 page 731 of 1130
Medium-speed
clock divider
Section 24 Clock Pulse Generator
Internal clock
To supporting
modules
/2 to /32
Bus master
selection
REJ09B0327-0400
circuit
clock
Bus master clock
To CPU, DTC