DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 104
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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5.5.3
An instruction placed immediately after a delayed branch instruction is called "instruction placed
in a delay slot". When the instruction placed in the delay slot is an undefined code, illegal slot
exception handling starts after the undefined code is decoded. Illegal slot exception handling also
starts when an instruction that changes the program counter (PC) value is placed in a delay slot
and the instruction is decoded. The CPU handles an illegal slot instruction as follows:
1. The status register (SR) is saved to the stack.
2. The program counter (PC) is saved to the stack. The PC value saved is the target address of the
3. The start address of the exception handling routine is fetched from the exception handling
5.5.4
When an undefined code placed anywhere other than immediately after a delayed branch
instruction (i.e., in a delay slot) is decoded, general illegal instruction exception handling starts.
The CPU handles the general illegal instructions in the same procedures as in the illegal slot
instructions. Unlike processing of illegal slot instructions, however, the program counter value that
is stacked is the start address of the undefined code.
Rev. 5.00 Mar. 06, 2009 Page 84 of 770
REJ09B0243-0500
delayed branch instruction immediately before the undefined code or the instruction that
rewrites the PC.
vector table that corresponds to the exception that occurred. Program execution branches to
that address and the program starts. This branch is not a delayed branch.
Illegal Slot Instructions
General Illegal Instructions
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