SH7046 Datasheet, PDF (541/611 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7046 Series

Initial
Bit Bit Name Value R/W
6
HIZ
0
R/W
5

0
R
4 to 1 
All 1 R
0
IRQEL 1
R/W
Section 21 Power-Down Modes
Description
Port High-Impedance
In software standby mode, this bit selects whether the pin
state of the I/O port is retained or changed to high-
impedance.
0: In software standby mode, the pin state is retained.
1: In software standby mode, the pin state is changed to
high-impedance.
The HIZ bit cannot be set to 1 when the TEM bit in TCSR
of the WDT is set to 1.
When changing the pin state of the I/O port to high-
impedance, clear the TEM bit to 0, then set the HIZ bit to
1.
Reserved
This bit is always read as 0, and should always be written
with 0.
Reserved
These bits are always read as 1, and should always be
written with 1.
IRQ3 to IRQ0 Enable
IRQ interrupts are enabled to clear software standby
mode.
0: Software standby mode is cleared.
1: Software standby mode is not cleared.
Rev. 4.00 Dec 05, 2005 page 497 of 564
REJ09B0270-0400