HD404612FS datasheet(18/91 Pages) RENESAS

18 / 91 page

HD404618 Series

Table 1 Initial Values After MCU Reset (cont)

Item

Abbr.

Initial Value Contents

Timer/

counters, serial

interface

Timer counter B

(TCB)

$00

—

Timer counter C

(TCC)

$00

—

Timer load register B

(TLR)

$00

—

Timer load register C

(TCR)

$00

—

Octal counter

000

—

LCD

LCD control register

(LCR)

000

Refer to description of LCD

control register

LCD mode register

(LMR)

0000

Refer to description of LCD duty

cycle/clock control

DTMF generator

Tone generator control

(TGC)

000

Refer to description of tone

generator control register

Tone generator mode

(TGM)

0000

Refer to description of generator

mode register

Bit registers

Low speed on flag

(LSON)

Refer to description of operating

modes

Watchdog timer on flag (WDON)

Refer to description of timer C

Tone generator speed

flag

(TGSP)

Refer to description of DTMF

generation circuit

Direct transfer on flag

(DTON)

Refer to description of operating

modes

Miscellaneous

(MIS)

000

—

Item

Abbr.

Status after Cancellation of

Stop Mode by MCU Reset

Status after Cancellation of All

Other Modes by MCU Reset

Carry flag

(CA)

Pre-MCU-reset values are not

guaranteed; values must be

initialized by program

Pre-MCU-reset values are not

guaranteed; values must be

initialized by program

Accumulator

(A)

B register

(B)

W register

(W)

X/SPX register

(X/SPX)

Y/SPY register

(Y/SPY)

Serial data register

(SR)

RAM

Pre-MCU-reset (pre-STOP-

instruction) values are retained

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