DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 312
DF71251AD50FPV
Manufacturer Part Number
DF71251AD50FPV
Description
MCU RISC FLASH 32K 8K 64LQFP
Manufacturer
Renesas Electronics America
Series
SuperH® SH Tinyr
Datasheet
1.DF71243N50FPV.pdf
(794 pages)
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
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF71251AD50FPV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
- Current page: 312 of 794
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Rev. 5.00 Mar. 06, 2009 Page 292 of 770
REJ09B0243-0500
Figure 9.57 Example of Procedure for Setting Output Waveform Control at Synchronous
⎯ Example of Procedure for Setting Output Waveform Control at Synchronous Counter
⎯ Examples of Output Waveform Control at Synchronous Counter Clearing in
Clearing in Complementary PWM Mode
An example of the procedure for setting output waveform control at synchronous counter
clearing in complementary PWM mode is shown in figure 9.57.
Complementary PWM Mode
Figures 9.58 to 9.61 show examples of output waveform control in which the MTU2
operates in complementary PWM mode and synchronous counter clearing is generated
while the WRE bit in TWCR is set to 1. In the examples shown in figures 9.58 to 9.61,
synchronous counter clearing occurs at timing (3), (6), (8), and (11) shown in figure 9.56,
respectively.
synchronous counter clearing
synchronous counter clearing
complementary PWM mode
Output waveform control at
Output waveform control at
Start count operation
Stop count operation
Set TWCR and
Counter Clearing in Complementary PWM Mode
[1]
[2]
[3]
[1] Clear bits CST3 and CST4 in the timer
[2] Read bit WRE in TWCR and then write 1
[3] Set bits CST3 and CST4 in TSTR to 1 to
start register (TSTR) to 0, and halt timer
counter (TCNT) operation. Perform
TWCR setting while TCNT_3 and
TCNT_4 are stopped.
to it to suppress initial value output at
counter clearing.
start count operation.
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