3822 datasheet(39/59 Pages) RENESAS

39 / 59 page

Rev.1.20

Dec 24, 2003

page 39 of 57

3822 Group (A ver.)

Fig. 38 Initial status of microcomputer after reset

Port P0 direction register

Port P1 direction register

Port P2 direction register

Port P4 direction register

Port P5 direction register

Port P6 direction register

Port P7 direction register

PULL register A

PULL register B

Sirial I/O status register

Sirial I/O control register

UART control register

Timer X(Low)

Timer X(High)

Timer Y(Low)

Timer Y(High)

Timer 1

Timer 2

Timer 3

Timer X mode register

Timer Y mode register

Timer 123 mode register

φ output control register

A-D control register

Segment output enable register

LCD mode register

Interrupt edge selection register

CPU mode register

Interrupt request register 1

Interrupt request register 2

Interrupt control register 1

Interrupt control register 2

Processor status register

Program counter

Note: The contents of all other registers and RAM are undefined after reset, so they must be

initialized by software.

✕: undefined

Address

0016

FF16

0116

FF16

0016

Contents of address FFFD16

Contents of address FFFC16

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

(11)

(12)

(13)

(14)

(15)

(16)

(17)

(18)

(19)

(20)

(21)

(22)

(23)

(24)

(25)

(26)

(27)

(28)

(29)

(30)

(31)

(32)

(33)

(34)

000116

000316

000516

000916

000B16

000D16

000F16

001616

001716

001916

001A16

001B16

002016

002116

002216

002316

002416

002516

002616

002716

002816

002916

002A16

003416

003816

003916

003A16

003B16

003C16

003D16

003E16

003F16

(PS)

(PCH)

(PCL)

✕✕✕✕✕

✕✕

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