US38024-BAG1 Renesas Electronics America, US38024-BAG1 Datasheet - Page 330
![no-image](/images/manufacturer_photos/0/5/560/renesas_electronics_america_sml.jpg)
US38024-BAG1
Manufacturer Part Number
US38024-BAG1
Description
DEV EVALUATION KIT H8/38024
Manufacturer
Renesas Electronics America
Series
H8®r
Type
MCUr
Datasheet
1.US38024-BAG1.pdf
(684 pages)
Specifications of US38024-BAG1
Contents
2G (Second-generation) Evaluation Board, HEW debugger support, Cable and CD-ROM
For Use With/related Products
H8/38024
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
- Current page: 330 of 684
- Download datasheet (5Mb)
Section 9 Timers
Timer Counter W (TCW)
For the H8/38024, H8/38024S, and H8/38024R groups, the clock source is φ/8,192 or φw/32. For
the H8/38124 group, the clock source is selected based on the timer mode register (TMW) setting
if WDCKS is 0 and is φw/32 if WDCKS is 1.
When TCW overflows from H'FF to H'00, an internal reset signal is generated and WRST is set to
1 in TCSRW. Upon reset, TCW is initialized to H'00.
Timer Mode Register (TMW)
The TMW register is only implemented on the H8/38124. The input clock is selected using
combinations of CKS3 to CKS0.
Bits 7 to 4—Reserved
These bits are always read as 1.
Bits 3 to 0—Clock Select (CKS3 to CKS0)
These bits are used to select the clock input to TCW from among 10 internal options. Clock source
selection using this register is enabled when WDCKS in port mode register 2 (PMR2) is cleared to
0. If WDCKS is set to 1 the φw/32 clock source is selected, regardless of the settings of the bits in
this register.
Rev. 8.00 Mar. 09, 2010 Page 308 of 658
REJ09B0042-0800
Bit
Initial value
Read/Write
Bit
Initial value
Read/Write
TCW7
R/W
—
—
7
1
7
0
TCW6
R/W
—
—
6
1
6
0
TCW5
R/W
—
—
5
0
5
1
TCW4
R/W
4
0
—
—
4
1
TCW3
R/W
CKS3
R/W
3
0
3
1
TCW2
R/W
CKS2
2
0
R/W
2
1
TCW1
R/W
CKS1
1
0
R/W
1
1
TCW0
R/W
0
0
CKS0
R/W
0
1
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