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COP685BC bảng dữ liệu(PDF) 38 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
tên linh kiện COP685BC
Giải thích chi tiết về linh kiện  8-Bit CMOS ROM Based Microcontrollers with 2k Memory, Comparators, and CAN Interface
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nhà sản xuất  NSC [National Semiconductor (TI)]
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COP685BC bảng dữ liệu(HTML) 38 Page - National Semiconductor (TI)

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Comparators (Continued)
CMP1EN
Enables comparator 1 (“1”=enable). If compara-
tor 1 is disabled the associated L-pins can be
used as standard I/O.
Reserved This bit is reserved and should be zero.
The Comparator Select/Control bits are cleared on RESET
(the comparator is disabled). To save power, the program
should also disable the comparator before the device enters
the HALT mode.
The Comparator rise and fall times are symmetrical. The
user program must set up the Configuration and Data regis-
ters of the L port correctly for comparator Inputs/Output.
Interrupts
INTRODUCTION
Each device supports eleven vectored interrupts. Interrupt
sources include Timer 0, Timer 1, Port L Wakeup, Software
Trap, MICROWIRE/PLUS, and External Input.
All interrupts force a branch to location 00FF Hex in program
memory. The VIS instruction may be used to vector to the
appropriate service routine from location 00FF Hex.
The Software trap has the highest priority while the default
VIS has the lowest priority.
Each of the 11 maskable inputs has a fixed arbitration rank-
ing and vector.
Figure 35 shows the Interrupt Block Diagram.
DS012067-36
The BOXED area shows logic from PWM Timer. Comparator 2 output (CMP2OE) must be disabled in order to use PWM0 output.
FIGURE 34. Comparator Block
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