HD6477021X20V Renesas Electronics America, HD6477021X20V Datasheet - Page 297

• 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: -

An example of buffer operation in the complementary PWM mode between GRB3 and BRB3 is as
shown in figure 10.52. By making GRB3 larger than GRA3 using the buffer operation, a PWM
waveform with a duty cycle of 0% is generated. The transfer from BRB–GRB occurs upon
TCNT3 and GRA compare match and TCNT4 underflow.
TCNT3 and TCNT4 values
capture signal
H' 1FFF
TIOCB3
H' 0999
H' 0000
TIOCA3
GRA3
GRB3
BRB3
TIOC pin
TCNT
Input
Figure 10.51 Input Capture Timing Example for Buffer Operation
GR
CK
BR
Figure 10.52 Buffer Operation 4 (Complementary PWM Mode)
H' 0999
H' 0999
TCNT4
TCNT3
M
H' 0999
m
n
M
H' 1FFF
n
H' 1FFF
n + 1
H' 1FFF
H' 0999
N
n
M
H' 0999
GRB3
N
n
RENESAS 279
N + 1
Time