SH7052 datasheet(819/919 Pages) RENESAS

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23.1.2

Pin Configuration

Pins related to power-down modes are shown in table 23.2.

Table 23.2

Pin Configuration

Pin Name

Abbreviation

I/O

Function

Hardware standby input pin

HSTBY

Input

Input level determines transition to

hardware standby mode

Power-on reset input pin

RES

Input

Power-on reset signal input pin

23.1.3

Related Registers

Table 23.3 shows the registers used for power-down state control.

Table 23.3

Related Registers

Initial

Address

Access

Name

Abbreviation

R/W

Value

Write

Read

Size

Standby control register

SBYCR*

R/W

H'1F

H'FFFFEC14

System control register

SYSCR*

R/W

H'01

H'FFFFF708

Module standby control

MSTCR*

R/W

H'01

H'FFFFF70A*

2 H'FFFFF70B*3 8, 16

Notes: 1. SBYCR is accessed in three cycles, SYSCR and MSTCR in four or five cycles.

2. Write data in word units. Data cannot be written in byte or longword units.

3. Read data in byte units. Values cannot be read correctly if data is read in word or

longword units.

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