HD6417020SX20IV Renesas Electronics America, HD6417020SX20IV Datasheet - Page 355

• Manufacturer Part Number: HD6417020SX20IV
• Description: SH 1 CORE 32B MPU, 20MHZ/5V, 100
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7020r

Specifications of HD6417020SX20IV

• Core Processor: SH-1
• Core Size: 32-Bit
• Speed: 20MHz
• Connectivity: EBI/EMI, SCI
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Type: ROMless
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

12.3.4
In the interval timer mode, when the TCNT overflows the OVF flag is set to 1 and an interval
timer interrupt is requested (figure 12.6).
12.3.5
When the TCNT overflows the WOVF bit of the RSTCSR is set to 1 and a WDTOVF signal is
output. When the RSTE bit is set to 1, TCNT overflow enables an internal reset signal to be
generated for the entire chip (figure 12.7).
Overflow signal
(internal signal)
Overflow signal
(internal signal)
Timing of Setting the Overflow Flag (OVF)
Timing of Setting the Watchdog Timer Overflow Flag (WOVF)
WOVF
TCNT
CK
Figure 12.7 Timing of Setting the WOVF Bit and Internal Reset
TCNT
OVF
CK
Figure 12.6 Timing of Setting the OVF
H'FF
H'FF
H'00
H'00
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