DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 311
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: 311 of 794
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14. Output Waveform Control at Synchronous Counter Clearing in Complementary PWM Mode
Negative phase
Positive phase
Setting the WRE bit in TWCR to 1 suppresses initial output when synchronous counter
clearing occurs in the Tb interval at the trough in complementary PWM mode and controls
abrupt change in duty cycle at synchronous counter clearing.
Initial output suppression is applicable only when synchronous clearing occurs in the Tb
interval at the trough as indicated by (10) or (11) in figure 9.56. When synchronous clearing
occurs outside that interval, the initial value specified by the OLS bits in TOCR is output.
Even in the Tb interval at the trough, if synchronous clearing occurs in the initial value output
period (indicated by (1) in figure 9.56) immediately after the counters start operation, initial
value output is not suppressed.
In the MTU2, synchronous clearing generated in channels 0 to 2 in the MTU2 can cause
counter clearing.
Counter start
TGRA_3
TGRB_3
H'0000
TCDR
TDDR
Tb interval
(1)
Figure 9.56 Timing for Synchronous Counter Clearing
(2)
(3)
(4)
Tb interval
(5)
(6)
(7)
(8)
(9)
Rev. 5.00 Mar. 06, 2009 Page 291 of 770
Tb interval
(10) (11)
Output waveform is active-low
TCNT_3
REJ09B0243-0500
TCNT_4
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