DF2148BTE20 Renesas Electronics America, DF2148BTE20 Datasheet - Page 328

• Manufacturer Part Number: DF2148BTE20
• Description: IC H8S MCU FLASH 128K 100-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2148BTE20

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, IrDA, SCI, X-Bus
• Peripherals: 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): 4.5 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: HD64F2148BTE20; HD64F2148BTE20

Section 11 16-Bit Free-Running Timer (FRT)
11.5
11.5.1
Figure 11.3 shows the FRC increment timing with an internal clock source. Figure 11.4 shows the
increment timing with an external clock source. The pulse width of the external clock signal must
be at least 1.5 system clocks ( ). The counter will not increment correctly if the pulse width is
shorter than 1.5 system clocks ( ).
Rev. 3.00 Mar 21, 2006 page 272 of 788
REJ09B0300-0300
External clock
input pin
FRC input
clock
FRC
Internal clock
FRC input
clock
FRC
Operation Timing
FRC Increment Timing
Figure 11.4 Increment Timing with External Clock Source
Figure 11.3 Increment Timing with Internal Clock Source
N – 1
N
N
N + 1
N + 1