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LC87F6AC8ALU-EJ-H Datasheet(PDF) 5 Page - ON Semiconductor |
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LC87F6AC8ALU-EJ-H Datasheet(HTML) 5 Page - ON Semiconductor |
5 / 34 page LC87F6AC8A No.A0145-5/34 System clock divider function • Capable of run The minimum instruction cycle time can be selected from among 300ns, 600ns, 1.2 μs, 2.4μs, 4.8μs, 9.6μs, 19.2μs, 38.4 μs, and 76.8μs (at a main clock rate of 10MHz).ning on low current. Clock output function <1> Capable of generating 1/1, 1/2, 1/4, 1/8, 1/16, 1/32, or 1/64 of the source clock that is selected as the system clock. <2> Capable of generating the source clock for the subclock. Standby function • HALT mode: Halts instruction execution while allowing the peripheral circuits to continue operation. (The VFD display function and part of the serial transfer functions are disabled.) <1> Oscillation is not halted automatically. <2> Released by system reset or occurrence of an interrupt. • HOLD mode: Suspends instruction execution and operation of the peripheral circuits. <1> The CF oscillator, RC oscillator, crystal oscillator, and multifrequency RC oscillator automatically stop operation. <2> There are three ways of releasing HOLD mode: 1) Setting the reset pin to a low level 2) Setting at least one of the INT0, INT1, INT2, INT4, and INT5 pins to the specified level 3) Establishing an interrupt source at port 0 • X’tal HOLD mode: Suspends instruction execution and the operation of the peripheral circuits except the base timer. <1> The CF oscillator, RC oscillator, and multifrequency RC oscillator automatically stop operation. <2> The crystal oscillator retains the state when X’tal HOLD mode is entered. <3> There are four ways of releasing X’tal HOLD mode: 1) Setting the reset pin to a low level 2) Setting at least one of the INT0, INT1, INT2, INT4, and INT5 pins to the specified level 3) Establishing an interrupt source at port 0 4) Establishing an interrupt source in the base timer circuit On-chip debugger function • Supports software debugging with the microcontroller mounted on the target device Development tools • Evaluation chip: LC87EV690 • Flash ROM programming board: W87FQ100 User Option Selection Emulator LC876A00 series compatible EVA62S + ECB876600D + SUB876A00 + POD100QFP ICE-B877300 + SUB876A00 + POD100QFP LC876B00 series compatible EVA62S + ECB876600D + SUB876B00 + POD100QFP ICE-B877300 + SUB876B00 + POD100QFP Same package and pin assignment as mask ROM version • The LC87F6AC8A allows the user to specify the optional functions of the LC876A00 or LC876B00 series microcontrollers in the form of flash ROM data (note, however, that pins S32 to S47 are not provided with an internal pull-down resistor). This makes it possible to conduct sample tests using the production model circuit board. • When a program that is designed for the mask ROM version is applied to the LC87F6AC8A, the size of ROM and RAM that can be used is the same as that of the mask ROM version of the microcontrtoller. |
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