DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 364

• Manufacturer Part Number: DF71251AD50FPV
• Description: MCU RISC FLASH 32K 8K 64LQFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH Tinyr

Specifications of DF71251AD50FPV

• Core Processor: SH-2
• Core Size: 32-Bit
• Speed: 50MHz
• Connectivity: SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 37
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

9.7.13
When counting operation is suspended with TCNT_3 and TCNT_4 in complementary PWM
mode, TCNT_3 has the timer dead time register (TDDR) value, and TCNT_4 is held at H'0000.
When restarting complementary PWM mode, counting begins automatically from the initialized
state. This explanatory diagram is shown in figure 9.119.
When counting begins in another operating mode, be sure that TCNT_3 and TCNT_4 are set to
the initial values.
9.7.14
In complementary PWM mode, conduct rewrites by buffer operation for the PWM cycle setting
register (TGRA_3), timer cycle data register (TCDR), and duty setting registers (TGRB_3,
TGRA_4, and TGRB_4).
In complementary PWM mode, channel 3 and channel 4 buffers operate in accordance with bit
settings BFA and BFB of TMDR_3. When the BFA bit in TMDR_3 is set to 1, TGRC_3 functions
as a buffer register for TGRA_3. At the same time, TGRC_4 functions as the buffer register for
TGRA_4, and TCBR functions as the TCDR's buffer register.
Rev. 5.00 Mar. 06, 2009 Page 344 of 770
REJ09B0243-0500
Counter Value during Complementary PWM Mode Stop
Buffer Operation Setting in Complementary PWM Mode
Figure 9.119 Counter Value during Complementary PWM Mode Stop
TGRA_3
TCDR
TDDR
H'0000
Complementary PWM
TCNT_3
mode operation
TCNT_4
Counter
operation stop
Complementary
PMW restart
Complementary PWM
mode operation