M16CSLASH62A datasheet(34/615 Pages) RENESAS

tên linh kiện	M16C/62A

Giải thích chi tiết về linh kiện	16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/60 SERIES

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Mitsubishi microcomputers

M16C / 62A Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Reset

1-15

Figure 1.5.2. Reset sequence

Reset

There are two kinds of resets; hardware and software. In both cases, operation is the same after the reset.

(See “Software Reset” for details of software resets.) This section explains on hardware resets.

When the supply voltage is in the range where operation is guaranteed, a reset is effected by holding the

reset pin level “L” (0.2VCC max.) for at least 20 cycles. When the reset pin level is then returned to the “H”

level while main clock is stable, the reset status is cancelled and program execution resumes from the

address in the reset vector table.

Figure 1.5.1 shows the example reset circuit. Figure 1.5.2 shows the reset sequence.

Figure 1.5.1. Example reset circuit

BCLK

Address

Microprocessor

mode BYTE = “H”

Microprocessor

mode BYTE = “L”

Content of reset vector

Single chip

mode

BCLK

24cycles

FFFFC16

FFFFD16

FFFFE16

Content of reset vector

FFFFC16

FFFFE16

Content of reset vector

FFFFE16

XIN

RESET

CS0

FFFFC16

More than 20 cycles are needed

RESET

VCC

0.8V

RESET

VCC

4.0V

Example when VCC = 5V

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