h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 278
h8s-2138
Manufacturer Part Number
h8s-2138
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2138.pdf
(1061 pages)
- Current page: 278 of 1061
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Section 8 I/O Ports
System Control Register 2 (SYSCR2) [H8S/2138 Group Only]
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 17.2.2, 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 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
Rev. 4.00 Jun 06, 2006 page 224 of 1004
REJ09B0301-0400
Bit
Initial value
Read/Write
Bit 6
KWUL0
0
1
0
1
Description
Standard current specification is selected for port 6 MOS input pull-up function
Current-limit specification is selected for port 6 MOS input pull-up function
KWUL1 KWUL0
R/W
7
0
R/W
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
6
0
P6PUE
R/W
5
0
—
—
4
0
SDE
R/W
3
0
CS4E
R/W
2
0
CS3E
R/W
1
0
(Initial value)
(Initial value)
HI12E
R/W
0
0
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