DF2238RTF6 Renesas Electronics America, DF2238RTF6 Datasheet - Page 537

• Manufacturer Part Number: DF2238RTF6
• Description: MCU 2.2/3V 256K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2200r

Specifications of DF2238RTF6

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 6MHz
• Connectivity: I²C, SCI, SmartCard
• Peripherals: POR, PWM, WDT
• Number Of I /o: 72
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 2.2 V ~ 3.6 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: HD64F2238RTF6; HD64F2238RTF6

13.4.3
The OVF flag is set to 1 if TCNT overflows during interval timer operation. At the same time, an
interval timer interrupt (WOVI) is requested. This timing is shown in figure 13.4.
When NMI request is chosen in watchdog timer mode for WDT_1, TCNT overflow sets the OVF
flog to 1. At the same time, NMI interrupt is requested.
TCNT
Overflow signal
(internal signal)
OVF
φ
Legend:
WOVI: Interval timer interrupt request generation
H'FF
H'00
Timing of Setting Overflow Flag (OVF)
TCNT value
WT/IT=0
TME=1
Figure 13.3 Interval Timer Mode Operation
Overflow
Figure 13.4 Timing of OVF Setting
WOVI
H'FF
Overflow
WOVI
Rev. 6.00 Mar. 18, 2010 Page 475 of 982
Overflow
WOVI
Section 13 Watchdog Timer (WDT)
H'00
Overflow
WOVI
REJ09B0054-0600
Time