DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 646
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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Note that the reset signal should only be released after providing a reset input over a period longer
than the normal 100 μs. Since high voltages are applied during programming/erasing of the flash
memory, some voltage may still remain even after the error protection state has been entered. For
this reason, it is necessary to reduce the risk of damage to the flash memory by extending the reset
period so that the charge is released.
The state-transition diagram in figure 17.13 shows transitions to and from the error protection
state.
Rev. 5.00 Mar. 06, 2009 Page 626 of 770
REJ09B0243-0500
Error occurred
Programming/erasing
Programming/erasing disabled
Error protection mode
Program mode
Figure 17.13 Transitions to and from Error Protection State
Read disabled
Erase mode
FLER = 0
enabled
Read enabled
FLER = 1
Software standby mode
software standby mode
RES = 0
Cancel
Programming/erasing disabled
Error protection mode
(Software standby)
Programming/erasing interface
register is in its initial state.
RES = 0
Programming/erasing disabled
Read disabled
(Hardware protection)
FLER = 1
Reset or standby
Read enabled
FLER = 0
Programming/erasing interface
register is in its initial state.
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