DF2268FA13V Renesas Electronics America, DF2268FA13V Datasheet - Page 591

• Manufacturer Part Number: DF2268FA13V
• Description: IC H8S/2268 MCU FLASH 100QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2200r

Specifications of DF2268FA13V

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 13MHz
• Connectivity: I²C, SCI, SmartCard
• Peripherals: LCD, POR, PWM, WDT
• Number Of I /o: 67
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 10x10b, D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

This LSI has an on-chip clock pulse generator that generates the system clock (φ), the bus master
clock, and internal clocks. The clock pulse generator consists of an oscillator, duty adjustment
circuit, clock selection circuit, medium-speed clock divider, bus master clock selection circuit,
subclock oscillator, and wave formation circuit. A block diagram of the clock pulse generator is
shown in figure 21.1.
Frequency changes are performed by software by settings in the low-power control register
(LPWRCR) and system clock control register (SCKCR).
CPG0501B_000020020700
EXTAL
XTAL
OSC1
OSC2
Legend:
LPWRCR:
SCKCR:
Low-power control register
System clock control register
oscillator
Subclock
oscillator
System
clock
Figure 21.1 Block Diagram of Clock Pulse Generator
Section 21 Clock Pulse Generator
WDT_1, TMR4, LCD count clock
Generation
adjustment
LPWRCR
Waveform
Circuit
circuit
Duty
RFCUT
φ
SUB
selection
circuit
Clock
Rev. 5.00 Sep. 01, 2009 Page 539 of 656
clock divider
Medium-
speed
peripheral modules
Section 21 Clock Pulse Generator
Internal clock to
Internal
clock φ
φ/2 to
φ/32
selection
REJ09B0071-0500
SCKCR
master
circuit
clock
Bus
Bus master clock
to CPU and DTC
SCK2 to SCK0