M30280F6HP RENESAS [Renesas Technology Corp], M30280F6HP Datasheet - Page 136

• Manufacturer Part Number: M30280F6HP
• Description: 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/Tiny SERIES
• Manufacturer: RENESAS [Renesas Technology Corp]

M
R
R
1
e
E
Figure 12.18 TBiMR Register in Timer Mode
6
NOTE:
Table 12.6 Specifications in Timer Mode
. v
J
12.2.1 Timer Mode
Count source
Count operation
Divide ratio
Count start condition
Count stop condition
Interrupt request generation timing
TBi
Read from timer
Write to timer
C
0
2
2 /
In timer mode, the timer counts a count source generated internally (see Table 12.6). Figure 12.18
shows TBiMR register in timer mode.
9
1. The TB0S to TB2S bits are assigned to the bit 5 to bit 7 in the TABSR register.
0 .
B
IN
8
0
0
Timer Bi Mode Register (i= 0 to 2)
0
G
b7
pin function
4
J
o r
7
a
b6
0 -
. n
u
Item
p
2
b5
3
0
, 1
(
0
M
b4
2
1
0
6
b3
0
C
7
b2
2 /
, 8
page 116
b1
0
M
b0
0
1
6
f
• Decrement
• When the timer underflows, it reloads the reload register contents and
1/(n+1)
Set TBiS bit
Set TBiS bit to “0” (stop counting)
Timer underflow
I/O port
Count value can be read by reading TBi register
• When not counting and until the 1st count source is input after counting start
• When counting (after 1st count source input)
1
C
Bit Symbol
, f
continues counting
Value written to TBi register is written to both reload register and counter
Value written to TBi register is written to only reload register
TMOD0
TMOD1
2 /
TCK0
TCK1
MR0
2
MR1
MR2
MR3
(Transferred to counter when reloaded next)
f o
, f
8
Symbol
TB0MR to TB2MR
) B
3
8
8
, f
5
32
n: set value of TBi register (i= 0 to 2)
, f
(Note)
When write in timer mode, set to “0”.
When read in timer mode, the content is indeterminate.
Operation mode select bit
No effect in timer mode
Can be set to “0” or “1”
TB0MR register
Set to “0” in timer mode
TB1MR, TB2MR registers
Nothing is assigned. When write, set to “0”. When read, its
content is indeterminate
Count source select bit
C32
to “1” (start counting)
Bit Name
Address
039B
16
Specification
to 039D
b1 b0
0 0 : Timer mode or A/D trigger mode
b7 b6
0 0 : f
0 1 : f
1 0 : f
1 1 : f
16
1
8
32
C32
or f
After Reset
00XX0000
2
Function
2
0000
16
to FFFF
RW
16
RW
RW
RW
RW
RW
RW
RW
RO
12. Timer