HD6477021X20V Renesas Electronics America, HD6477021X20V Datasheet - Page 293

• 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: -

Complementary PWM Mode: When the count direction of TCNT3 and TCNT4 change, the BR
value is transferred to the GR. The following timing is employed for this transfer:
•
•
Reset-Synchronized PWM Mode: The BR value is transferred to GR upon a GRA3 compare
match.
Procedure for Selecting the Buffer Mode (figure 10.47):
1. Set the TIOR to select the output compare or input capture function of the GR.
2. Set bits BFA3, BFB3 and BFB4 in the TFCR to select the buffer mode for the GR.
3. Set the STR bit in the TSTR to 1 to start the TCNT counting.
Whenever TCNT3 and GRA3 compare-match
Whenever TCNT4 underflows
Input capture signal
BR
Figure 10.47 Procedure for Selecting the Buffer Mode
Figure 10.46 Input Capture Buffer Operation
Select general register function
Select buffer mode
Start counting
Buffer mode
Buffer mode
GR
(1)
(2)
(3)
RENESAS 275
TCNT