HD6477021X20V Renesas Electronics America, HD6477021X20V Datasheet - Page 301

• 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: -

CK
TCNT
H' FFFF
H' 0000
Overflow
signal
OVF
OVI
Figure 10.56 Timing of Setting OVF
10.5.2
Clear Timing of Status Flags
The status flags are cleared by a write cycle in which 1 is read on the CPU and then 0 is written to
it. This timing is shown in figure 10.57.
TSR write cycle
T1
T2
T3
CK
TSR address
Address
IMF, OVF
Figure 10.57 Timing of Status Flag Clearing
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