DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 276

• 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: -

Example of PWM Mode Setting Procedure: Figure 9.25 shows an example of the PWM mode
setting procedure.
Examples of PWM Mode Operation: Figure 9.26 shows an example of PWM mode 1 operation.
In this example, TGRA compare match is set as the TCNT clearing source, 0 is set for the TGRA
initial output value and output value, and 1 is set as the TGRB output value.
In this case, the value set in TGRA is used as the period, and the values set in the TGRB registers
are used as the duty levels.
Rev. 5.00 Mar. 06, 2009 Page 256 of 770
REJ09B0243-0500
TGRA
TGRB
H'0000
TIOCA
Select counter clearing
Select counter clock
Select waveform
TCNT value
Set PWM mode
<PWM mode>
Figure 9.25 Example of PWM Mode Setting Procedure
PWM mode
output level
Start count
Set TGR
Figure 9.26 Example of PWM Mode Operation (1)
source
[1]
[2]
[3]
[4]
[5]
[6]
Counter cleared by
TGRA compare match
[1] Select the counter clock with bits TPSC2 to
[2] Use bits CCLR2 to CCLR0 in TCR to select
[3] Use TIOR to designate the TGR as an output
[4] Set the cycle in the TGR selected in [2], and
[5] Select the PWM mode with bits MD3 to MD0
[6] Set the CST bit in TSTR to 1 to start the
TPSC0 in TCR. At the same time, select the
input clock edge with bits CKEG1 and
CKEG0 in TCR.
the TGR to be used as the TCNT clearing
source.
compare register, and select the initial value
and output value.
set the duty in the other TGR.
in TMDR.
count operation.
Time