HD404374FT datasheet(34/161 Pages) RENESAS

34 / 161 page

HD404374/HD404384/HD404389/HD404082/HD404084 Series

Rev.5.00, Sep.11.2003, page 34 of 161

Table 1 (2) Initial Values after MCU Reset

Item

Abbr.

Initial

value

Contents

Serial mode register 1

(SMR1)

0000

See serial mode register 1 section

Serial mode register 2

(SMR2)

-0X-

See serial mode register 2 section

Serial data register

(SRU,L)

$XX

Serial

interface

Octal counter

000

A/D mode register

(AMR)

0000

See A/D mode register section

A/D data register U

(ADRU)

0111

A/D data register M

(ADRM)

1111

A/D

converter

A/D data register L

(ADRL)

11- -

See A/D data register section

Low speed on flag

(LSON)

See low-power mode section

Watchdog timer on flag

(WDON)

See timer C section

A/D start flag

(ADSF)

See A/D converter section

Direct transfer on flag

(DTON)

See low-power mode section

Bit

registers

Gear enable flag

(GEF)

See system clock gear function

Miscellaneous register

(MIS)

0-00

See low-power mode and input/output sections

System clock select

(SSR)

0000

See low-power mode and oscillator circuit sections

Module standby register 1 (MSR1)

--00

See timer section

Others

Module standby register 2 (MSR2)

--00

See serial interface and A/D converter sections

Notes: 1. The state of registers and flags other than those listed above after an MCU reset is shown in

table 1 (3).

2. X: Indicates invalid value, - indicates that the bit does not exist.

Table 1 (3) Initial Values after MCU Reset

Item

Abbr.

After Stop Mode Clearance by

After Other MCU Reset

Carry flag

(CA)

Accumulator

(A)

B register

(B)

W register

(W)

X/SPX register (X/SPX)

Y/SPY register (Y/SPY)

RAM

Retain value immediately prior to

entering stop mode

Value immediately prior to MCU reset is not

guaranteed. Must be initialized by program.

HD404374FT Datasheet(PDF) 34 Page - Renesas Technology Corp

HD404374FT Datasheet(HTML) 34 Page - Renesas Technology Corp

Html Pages

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 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL