HD6412350 Hitachi, HD6412350 Datasheet - Page 828

• Manufacturer Part Number: HD6412350
• Description: (HD6412350 / HD6432351) 16-BIT MICROCONTROLLER
• Manufacturer: Hitachi

TSR4—Timer Status Register 4
808
Bit
Initial value
Read/Write
Note: * Can only be written with 0 for flag clearing.
:
:
:
Count Direction Flag
TCFD
0
1
R
7
1
TCNT counts down
TCNT counts up
—
—
6
1
Underflow Flag
R/(W)*
TCFU
0
1
5
0
[Clearing condition]
When 0 is written to TCFU after reading TCFU = 1
[Setting conditions]
When the TCNT value underflows (changes from H'0000 to H'FFFF)
Overflow Flag
R/(W)*
TCFV
0
1
4
0
[Clearing condition]
When 0 is written to TCFV after reading TCFV = 1
[Setting conditions]
When the TCNT value overflows (changes from H'FFFF to H'0000 )
—
—
3
0
—
—
2
0
Input Capture/Output Compare Flag B
R/(W)*
TGFB
H'FE95
0
1
1
0
[Setting conditions]
[Clearing condition]
• When DTC is activated by TGIB interrupt while DISEL
• When 0 is written to TGFB after reading TGFB = 1
• When TCNT = TGRB while TGRB is functioning as
• When TCNT value is transferred to TGRB by input
Input Capture/Output Compare Flag A
output compare register
capture signal while TGRB is functioning as input
capture register
bit of MRB in DTC is 0
0
1
R/(W)*
TGFA
0
0
[Clearing condition]
• When DTC is activated by TGIA interrupt while
• When DMAC is activated by TGIA interrupt while
• When 0 is written to TGFA after reading TGFA = 1
[Setting conditions]
• When TCNT = TGRA while TGRA is functioning
• When TCNT value is transferred to TGRA by
DISEL bit of MRB in DTC is 0
DTA bit of DMABCR in DMAC is 1
as output compare register
input capture signal while TGRA is functioning
as input capture register
TPU4