DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 263
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: 263 of 794
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9.4.2
In synchronous operation, the values in a number of TCNT counters can be rewritten
simultaneously (synchronous presetting). Also, a number of TCNT counters can be cleared
simultaneously by making the appropriate setting in TCR (synchronous clearing).
Synchronous operation enables TGR to be incremented with respect to a single time base.
Channels 0 to 4 can all be designated for synchronous operation. Channel 5 cannot be used for
synchronous operation.
Example of Synchronous Operation Setting Procedure:
Figure 9.12 shows an example of the synchronous operation setting procedure.
[1] Set to 1 the SYNC bits in TSYR corresponding to the channels to be designated for synchronous
[2] When the TCNT counter of any of the channels designated for synchronous operation is written to,
[3] Use bits CCLR2 to CCLR0 in TCR to specify TCNT clearing by input capture/output compare, etc.
[4] Use bits CCLR2 to CCLR0 in TCR to designate synchronous clearing for the counter clearing source.
[5] Set to 1 the CST bits in TSTR for the relevant channels, to start the count operation.
<Synchronous presetting>
Synchronous presetting
Synchronous Operation
Synchronous operation
operation.
the same value is simultaneously written to the other TCNT counters.
Set synchronous
Figure 9.12 Example of Synchronous Operation Setting Procedure
Set TCNT
operation
selection
[1]
[2]
Synchronous clearing
<Counter clearing>
source generation
clearing source
Select counter
Start count
channel?
Clearing
Yes
No
[3]
[5]
Rev. 5.00 Mar. 06, 2009 Page 243 of 770
<Synchronous clearing>
Set synchronous
counter clearing
Start count
REJ09B0243-0500
[4]
[5]
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