DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 306

• Manufacturer Part Number: DF2437FV
• Description: IC H8S/2437 MCU FLASH 128QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2400r

Specifications of DF2437FV

• Core Processor: H8S/2600
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 85
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 16x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 128-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

10.5.8
The OVF flag is set to 1 when FRC overflows (changes from H'FFFF to H'0000). Figure 10.13
shows the timing of setting the OVF flag.
10.5.9
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. Figure 10.14 shows the OCRA write timing.
Rev.2.00 May. 28, 2009 Page 266 of 732
REJ09B0059-0200
φ
FRC
OCRA
OCRAR, OCRAF
Compare-match
signal
Timing of Overflow Flag Setting
Automatic Addition Timing
φ
FRC
Overflow signal
OVF
Figure 10.14 OCRA Automatic Addition Timing
Figure 10.13 Timing of OVF Flag Setting
N
N
H'FFFF
A
H'0000
N + A
N +1