DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 621
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
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF71251AD50FPV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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Bit
31 to 0 UA31 to
Bit Name
UA0
Initial
Value
Undefined R/W
R/W
Description
User Branch Destination Address
When the user branch is not required, address 0
(H'84000000) must be set.
The user branch destination must be an area other than
the flash memory, an area other than the RAM area in
which on-chip program has been transferred, or the
external bus space.
Note that the CPU must not branch to an area without
the execution code and get out of control. The on-chip
program download area and stack area must not be
overwritten. If CPU runaway occurs or the download
area or stack area is overwritten, the value of flash
memory cannot be guaranteed.
The download of the on-chip program, initialization,
initiation of the programming/erasing program must not
be executed in the processing of the user branch
destination. Programming or erasing cannot be
guaranteed when returning from the user branch
destination. The program data which has already been
prepared must not be programmed.
Store general registers R8 to R15. General registers R0
to R7 are available without storing them.
Moreover, the programming/erasing interface registers
must not be written to in the processing of the user
branch destination.
After the processing of the user branch has ended, the
programming/erasing program must be returned to by
using the RTS instruction.
For the execution intervals of the user branch
processing, see note 2 (User Branch Processing
Intervals) in section 17.7.2, Other Notes.
Rev. 5.00 Mar. 06, 2009 Page 601 of 770
REJ09B0243-0500
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