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LC877680B датащи(PDF) 4 Page - Sanyo Semicon Device

номер детали LC877680B
подробное описание детали  8-bit 1-chip Microcontroller
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производитель  SANYO [Sanyo Semicon Device]
домашняя страница  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

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LC877696B/80B/64B/48B
No.A0965-4/25
Interrupts Source Flags
• 23 sources, 10 vector addresses
1) Provides three levels (low (L), high (H), and highest (X)) of multiplex interrupt control. Any interrupt requests of
the level equal to or lower than the current interrupt are not accepted.
2) When interrupt requests to two or more vector addresses occur at the same time, the interrupt of the highest
level takes precedence over the other interrupts. For interrupts of the same level, the interrupt into the smallest
vector address takes precedence.
No.
Vector Address
Level
Interrupt Source
1
00003H
X or L
INT0
2
0000BH
X or L
INT1
3
00013H
H or L
INT2/T0L/remote control receiver
4
0001BH
H or L
INT3/base timer 0/base timer 1
5
00023H
H or L
T0H
6
0002BH
H or L
T1L/T1H
7
00033H
H or L
SIO0/UART1 receive
8
0003BH
H or L
SIO1/UART1 transmit
9
00043H
H or L
ADC/MIC/T6/T7/PWM4, PWM5
10
0004BH
H or L
Port 0/T4/T5
• Priority levels X > H > L
• Of interrupts of the same level, the one with the smallest vector address takes precedence.
• IFLG (List of interrupt source flag function)
1) Shows a list of interrupt source flags that caused a branching to a particular vector address
Subroutine Stack Levels: 2048 levels maximum (The stack is allocated in RAM.)
High-speed Multiplication/Division Instructions
• 16 bits × 8 bits
(5 tCYC execution time)
• 24 bits × 16 bits
(12 tCYC execution time)
• 16 bits ÷ 8 bits
(8 tCYC execution time)
• 24 bits ÷ 16 bits
(12 tCYC execution time)
Oscillation Circuits
• RC oscillation circuit (internal): For system clock
• CF oscillation circuit: For system clock, with internal Rf and external Rd
• Crystal oscillation circuit: For low-speed system clock, with internal Rf and external Rd
• Multifrequency RC oscillation circuit (internal): For system clock
1) Adjustable in
±4% (typ) increments from the selected center frequency.
2) Measures the frequency of the source oscillation clock using the input signal from XT1 as the reference.
System Clock Divider Function
• Can run on low current.
• The minimum instruction cycle selectable from 300ns, 600ns, 1.2μs, 2.4μs, 4.8μs, 9.6μs, 19.2μs, 38.4μs,
and 76.8
μs (at a main clock rate of 10MHz).
System Clock Multiplier Function
• Allows the 2 or 3 times the clock frequency to be selected when the crystal oscillation output is used as the system
clock.


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