DF2398TE20 Renesas Electronics America, DF2398TE20 Datasheet - Page 691

• Manufacturer Part Number: DF2398TE20
• Description: IC H8S MCU FLASH 256K 120TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of DF2398TE20

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 87
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K 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: 120-TQFP, 120-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: HD64F2398TE20; HD64F2398TE20

20.1
The H8S/2357 Group has a on-chip clock pulse generator (CPG) that generates the system clock (ø), 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.
20.1.1
Figure 20-1 shows a block diagram of the clock pulse generator.
20.1.2
The clock pulse generator is controlled by SCKCR. Table 20-1 shows the register configuration.
Table 20-1 Clock Pulse Generator Register
Note:* Lower 16 bits of the address.
Overview
Block Diagram
Register Configuration
Name
System clock control register
EXTAL
XTAL
Oscillator
Figure 20-1 Block Diagram of Clock Pulse Generator
Section 20 Clock Pulse Generator
adjustment
circuit
Abbreviation
SCKCR
Duty
System clock to ø pin
Medium-
divider
speed
R/W
R/W
Internal clock
to supporting
modules
ø/2 to ø/32
Initial Value
H'00
Rev.6.00 Oct.28.2004 page 661 of 1016
Bus master
selection
SCKCR
circuit
clock
Bus master clock
SCK2 to SCK0
to CPU, DTC,
and DMAC
Address*
H'FF3A
REJ09B0138-0600H