HD6433640 HITACHI [Hitachi Semiconductor], HD6433640 Datasheet - Page 233
HD6433640
Manufacturer Part Number
HD6433640
Description
H8/3644 Series Hardware Manual
Manufacturer
HITACHI [Hitachi Semiconductor]
Datasheet
1.HD6433640.pdf
(508 pages)
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Timer Control/Status Register V (TCSRV)
Note: * Bits 7 to 5 can be only written with 0, for flag clearing.
TCSRV is an 8-bit register that sets compare match flags and the timer overflow flag, and controls
compare match output.
TCSRV is initialized to H'10 upon reset and in standby mode, watch mode, subsleep mode, and
subactive mode.
Bit 7—Compare Match Flag B (CMFB): Bit 7 is a status flag indicating that TCNTV has
matched TCORB. This flag is set by hardware and cleared by software. It cannot be set by
software.
Bit 7: CMFB
0
1
Bit 6—Compare Match Flag A (CMFA): Bit 6 is a status flag indicating that TCNTV has
matched TCORA. This flag is set by hardware and cleared by software. It cannot be set by
software.
Bit 6: CMFA
0
1
Bit
Initial value
Read/Write
R/(W)*
CMFB
Description
Clearing conditions:
After reading CMFB = 1, cleared by writing 0 to CMFB
Setting conditions:
Set when the TCNTV value matches the TCORB value
Description
Clearing conditions:
After reading CMFA = 1, cleared by writing 0 to CMFA
Setting conditions:
Set when the TCNTV value matches the TCORA value
7
0
R/(W)*
CMFA
6
0
R/(W)*
OVF
5
0
—
—
4
1
OS3
R/W
3
0
OS2
R/W
2
0
OS1
R/W
1
0
(initial value)
(initial value)
OS0
R/W
0
0
225
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