HD64F2149 Datasheet, PDF (257/1035 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

System Control Register 2 (SYSCR2)
Bit
7
6
5
4
KWUL1 KWUL0 P6PUE —
Initial value
0
0
0
0
Read/Write R/W
R/W
R/W
—
3
SDE
0
R/W
2
CS4E
0
R/W
1
CS3E
0
R/W
0
HI12E
0
R/W
SYSCR2 is an 8-bit readable/writable register that controls port 6 input level selection and the
operation of host interface functions.
Only bits 7, 6, and 5 are described here. See section 18A.2.2, System Control Register 2
(SYSCR2), for information on bits 4 to 0.
SYSCR2 is initialized to H'00 by a reset and in hardware standby mode.
Bits 7 and 6—Key Wakeup Level 1 and 0 (KWUL1, KWUL0): The port 6 input level setting
can be changed by software, using these bits. The setting of these bits also changes the input level
of the pin functions multiplexed with port 6.
Bit 7
KWUL1
0
1
Bit 6
KWUL0
0
1
0
1
Description
Standard input level is selected as port 6 input level
Input level 1 is selected as port 6 input level
Input level 2 is selected as port 6 input level
Input level 3 is selected as port 6 input level
(Initial value)
Bit 5—Port 6 Input Pull-Up Extra (P6PUE): Controls and selects the current specification for
the port 6 MOS input pull-up function connected by means of KMPCR settings.
Bit 5
P6PUE
0
1
Description
Standard current specification is selected for port 6 MOS input pull-up function
(Initial value)
Current-limit specification is selected for port 6 MOS input pull-up function
223