YR0K42378FC000BA Renesas Electronics America, YR0K42378FC000BA Datasheet - Page 646

• Manufacturer Part Number: YR0K42378FC000BA
• Description: KIT EVAL FOR H8S/2378
• Manufacturer: Renesas Electronics America
• Series: H8®r
• Type: MCUr

Specifications of YR0K42378FC000BA

• Contents: Board
• For Use With/related Products: H8S/2378
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Section 11 16-Bit Timer Pulse Unit (TPU)
11.3.5
TSR registers indicate the status of each channel. The TPU has six TSR registers, one for each
channel.
Bit
7
6
5
4
Rev.7.00 Mar. 18, 2009 page 578 of 1136
REJ09B0109-0700
Bit Name
TCFD
—
TCFU
TCFV
Timer Status Register (TSR)
Initial value
1
1
0
0
R/W
R
—
R/(W) *
R/(W) *
Description
Count Direction Flag
Status flag that shows the direction in which TCNT
counts in channels 1, 2, 4, and 5.
In channels 0 and 3, bit 7 is reserved. It is always
read as 1 and cannot be modified.
0: TCNT counts down
1: TCNT counts up
Reserved
This bit is always read as 1 and cannot be
modified.
Underflow Flag
Status flag that indicates that TCNT underflow has
occurred when channels 1, 2, 4, and 5 are set to
phase counting mode.
In channels 0 and 3, bit 5 is reserved. It is always
read as 0 and cannot be modified.
[Setting condition]
When the TCNT value underflows (changes from
H'0000 to H'FFFF)
[Clearing condition]
When 0 is written to TCFU after reading TCFU = 1
Overflow Flag
Status flag that indicates that TCNT overflow has
occurred.
[Setting condition]
When the TCNT value overflows (changes from
H'FFFF to H'0000)
[Clearing condition]
When 0 is written to TCFV after reading TCFV = 1