h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 430

• Manufacturer Part Number: h8s-2138
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 14 Watchdog Timer (WDT)
14.2.2
TCSR is an 8-bit readable/writable * register. Its functions include selecting the clock source to be
input to TCNT, and the timer mode.
TCR is initialized to H'00 by a reset and in hardware standby mode. It is not initialized in software
standby mode.
Note: * TCSR is write-protected by a password to prevent accidental overwriting. For details
Rev. 4.00 Jun 06, 2006 page 376 of 1004
REJ09B0301-0400
Bit
Initial value
Read/Write
Note: * Only 0 can be written, to clear the flag.
Bit
Initial value
Read/Write
Note: * Only 0 can be written, to clear the flag.
TCSR0
TCSR1
Timer Control/Status Register (TCSR)
see section 14.2.4, Notes on Register Access.
R/(W) *
R/(W) *
OVF
OVF
7
0
7
0
WT/IT
WT/IT
R/W
R/W
6
0
6
0
TME
TME
R/W
R/W
5
0
5
0
RSTS
PSS
R/W
R/W
4
0
4
0
RST/NMI
RST/NMI
R/W
R/W
3
0
3
0
CKS2
CKS2
R/W
R/W
2
0
2
0
CKS1
CKS1
R/W
R/W
1
0
1
0
CKS0
CKS0
R/W
R/W
0
0
0
0