HD6477021X20V Renesas Electronics America, HD6477021X20V Datasheet - Page 353

• Manufacturer Part Number: HD6477021X20V
• Description: MCU 5V 32K PB-FREE 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7020r

Specifications of HD6477021X20V

• 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 Size: 32KB (32K x 8)
• Program Memory Type: OTP
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -

WT/IT: Timer mode select bit
TME:
Note:
reset signal*
WDTOVF
Internal
signal
Timer enable bit
The internal reset signal is only generated when the RSTE bit is 1.
H'FF
H'00
TCNT
value
WT/IT = 1
TME = 1
Figure 12.4 Operation in the Watchdog Timer Mode
H'00 written
in TCNT
internal reset generated
WDTOVF and
WOVF = 1
Overflow
128 clock
512 clock
WT/IT = 1
TME = 1
H'00 written
in TCNT
RENESAS 335
Time