HD404814H Просмотр технического описания (PDF) - Renesas Electronics

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производитель

HD404814H

4-Bit Single-Chip Microcomputer

Renesas Electronics 

HD404818 Series

Table 1 Initial Values after MCU Reset (cont)

Items

LCD

Bit register

Miscellaneous

register

LCD control register (LCR)

Initial Value

000

LCD mode register (LMR)

0000

Low speed on flag (LSON) 0

Watchdog timer on flag

0

(WDON)

Direct transfer on flag (DTON) 0

(MIS)

000

Contents

Refer to description of LCD Control

Register

Refer to description of LCD Duty/Clock

Control

Refer to description of Low-Power

Dissipation Mode

Refer to description of Timer C

Refer to description of Low-Power

Dissipation Mode

—

Item

After MCU Reset to Recover from

Stop Mode

Carry flag (CA)

The contents of the items before

MCU reset are not retained. It is

necessary to initialize them by

software.

Accumulator (A)

B register (B)

W register (W)

X/SPX registers (X/SPX)

Y/SPY registers (Y/SPY)

Serial data register (SR)

RAM

The contents of RAM before MCU

reset (just before STOP instruction)

are retained.

After MCU Reset to Recover from

Other Modes

The contents of the items before MCU

reset are not retained. It is necessary to

initialize them by software.

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