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3069RF-ZTAT Datasheet, PDF (908/1003 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER
8TCSR0—Timer Control/Status Register 0
H'FFF82
8-bit timer channel 0
Bit
7
6
CMFB CMFA
5
OVF
4
ADTE
Initial value
0
0
0
0
Read/Write R/(W)* R/(W)* R/(W)* R/W
3
OIS3
0
R/W
2
OIS2
0
R/W
1
OS1
0
R/W
0
OS0
0
R/W
Output select A1 and A0
Bit 1 Bit 0
OS1 OS0
Description
0 No change at compare match A
0
1 0 output at compare match A
0 1 output at compare match A
1 1 Output toggles at compare
match A
Output/input capture edge select B3 and B2
ICE in Bit 3 Bit 2
TCSR1 OIS3 OIS2
Description
0 No change at compare match B
0
1 0 output at compare match B
0
0 1 output at compare match B
1
1 Output toggles at compare match
B
0 TCORB input capture on rising
0
edge
1
1 TCORB input capture on falling
edge
1
0 TCORB input capture on both
1 rising and falling edges
A/D trigger enable (TCSR0 only)
TRGE*1 Bit 4
ADTE
Description
A/D converter start requests by compare match A
0 or an external trigger are disabled
0
A/D converter start requests by compare match A
1 or an external trigger are enabled
1
0 A/D converter start requests by an external trigger are enabled
1 A/D converter start requests by compare match A are enabled
Note: *1 TRGE is bit 7 of the A/D control register (ADCR).
Timer overflow flag
[Clearing condition]
0 Read OVF when OVF = 1, then write 0 in OVF
1
[Setting condition]
TCNT overflows from H'FF to H'00
Compare match flag A
[Clearing condition]
0 Read CMFA when CMFA = 1, then write 0 in CMFA
1
[Setting condition]
TCNT = TCORA
Compare match/input capture flag B
0 [Clearing condition]
Read CMFB when CMFB = 1, then write 0 in CMFB
[Setting conditions]
1 TCNT = TCORB
The TCNT value is transferred to TCORB by an input capture signal when
TCORB functions as an input capture register.
Note: * Only 0 can be written to bits 7 to 5, to clear these flags.
Rev. 5.0, 09/04, page 886 of 978