DF2148ATE20 Renesas Electronics America, DF2148ATE20 Datasheet - Page 377

• 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

11.3.7
The FRC overflow flag (OVF) is set to 1 when FRC overflows (changes from H'FFFF to H'0000).
Figure 11.13 shows the timing of this operation.
11.3.8
When the OCRAMS bit in TOCR is set to 1, the contents of OCRAR and OCRAF are
automatically added to OCRA alternately, and when an OCRA compare-match occurs a write to
OCRA is performed. The OCRA write timing is shown in figure 11.14.
FRC
OCRA
OCRAR, F
Compare-match
signal
Setting of FRC Overflow Flag (OVF)
Automatic Addition of OCRA and OCRAR/OCRAF
FRC
Overflow signal
OVF
Figure 11.14 OCRA Automatic Addition Timing
Figure 11.13 Setting of Overflow Flag (OVF)
N
N
H'FFFF
A
Rev. 4.00 Sep 27, 2006 page 331 of 1130
Section 11 16-Bit Free-Running Timer
N+A
N+1
H'0000
REJ09B0327-0400