7480 datasheet(46/98 Pages) RENESAS

46 / 98 page

MITSUBISHI MICROCOMPUTERS

7480/7481 GROUP

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

PRELIMINAR

Notice:

This

is not

a final

specification.

Some

parametric

limits

are

subject

to change.

Fig. 49 Internal state of microcomputer at reset

: At reset release, the read value is undefined.

000 0

Contents of address FFFF16

Address

( 1 )

Port P0 direction register (P0D)

(C116) • • •

Contents of address FFFE16

( 2 )

Port P1 direction register (P1D)

(C316) • • •

( 4 )

Port P5 direction register (P5D)

(CB16) • • •

( 5 )

Port P0 pull-up control register (P0PCON)

(D016) • • •

( 6 )

Port P1 pull-up control register (P1PCON)

(D116) • • •

( 8 ) Edge polarity selection register (EG)

(D416) • • •

( 9 )

A-D control register (ADCON)

(D916) • • •

(22)

Timer Y mode register (TYM)

(F7 16) • • •

(23)

Timer XY control register (TXYCON)

(F816) • • •

(24)

Timer 1 mode register (T1M)

(F916) • • •

(25)

Timer 2 mode register (T2M)

(FA16) • • •

(26)

CPU mode register (CPUM)

(FB 16) • • •

(27)

Interrupt request register 1 (IREQ1)

(FC 16) • • •

(28)

Interrupt request register 2 (IREQ2)

(FD 16) • • •

(29)

Interrupt control register 1 (ICON1)

(FE 16) • • •

(30)

Interrupt control register 2 (ICON2)

(FF 16) • • •

(31)

Program counter (PC H)

(32)

Processor status register (PS)

( 3 )

) • • •

(10)

STP instruction operation control register (STPCON)

(DE16) • • •

(11)

Serial I/O status register (SIOSTS)

(E116) • • •

(12)

Serial I/O control register (SIOCON)

(E216) • • •

(13)

UART control register (UARTCON)

(E3 16) • • •

(15)

Watchdog timer H (WDTH)

(EF16) • • •

(21)

Timer X mode register (TXM)

(F6 16) • • •

(PCL)

00 00

00 0 0

1 1 11

( 7 ) Port P4P5 input control register (P4P5CON)

(D216) • • •

(14)

Bus collision detection control register (BUSARBCON)

(E516) • • •

000 0

FF16

0 0 000

000 0 00

0016

(20)

Timer 1 (T1)

(F4 16) • • •

(19)

Timer Y high-order (TYH)

(F3 16) • • •

FF16

(18)

Timer Y low-order (TYL)

(F2 16) • • •

(17)

Timer X high-order (TXH)

(F1 16) • • •

FF16

(16)

Timer X low-order (TXL)

(F0 16) • • •

FF16

0016

00 00

100 0

Note : Some kinds of microcomputers do not use some of these bits. Refer to the structure of each register.

00 0

000 0

Port P4 direction register (P4D)

(C9

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