Rtc/Touch Panel/Key Input/Power Supply Status Register (Rtkisr); Power Supply Control - Renesas SH7727 General Information Manual

R0P7727TH003TRKE General Information Manual

6.5.8 RTC/Touch Panel/Key Input/Power Supply Status Register (RTKISR)

This status register indicates the RTC, touch panel, or key input status. Below is a brief description of the
status bits for key input.
Address: 0x0090 Initial value: 0x00
D7 D6
0 0
R R
(1) KEYIF
KEYIF bit
0
1

6.6 Power Supply Control

This section describes the power supply control functions. Table 6.6 summarizes the power supply control
registers. In addition, refer to 6.6.1 to 6.6.3 for details of each register.
(1) T-Engine is turned ON or OFF.
(2) When T-Engine is OFF, it is turned ON if the power-on switch is pressed for 2 seconds or more.
(3) T-Engine can be turned OFF from the SH7727.
(4) If the DIP switch (SW7) is set to ON, T-Engine is also turned ON at the same time the power supply
controller is turned ON.
Register
System power control register 1
System power control register 2
D5 D4
0 IRRIF
R R/W
The PONSWF, ARKEYF, KEY_OFFF, and KEY_ONF bits of the
key input status register are all set to "0." (Initial value)
One of the PONSWF, ARKEYF, KEY_OFFF, or KEY_ONF bits of
the key input status register is set to "1."
n]
"0" is written with the KEYIF bit set to "1."
Table 6.6 Power Control Registers
Abbreviation
SPOWCR1
SPOWCR2
D3 D2
POWERIF KEYIF
R/W R/W
Setting
Address
0x0070
0x0071
80
Power Supply Controller
D1 D0
TPIF RTCIF
R/W R/W
R/W Size Remarks
R/W 1 byte
R/W 1 byte