m30262f8gp Renesas Electronics Corporation., m30262f8gp Datasheet - Page 96

• Manufacturer Part Number: m30262f8gp
• Description: Renesas 16-bit Cmos Single-chip Microcomputer M16c Family / M16c/20 Series
• Manufacturer: Renesas Electronics Corporation.

Timer B
90
Figure 1.13.19. Timer Bi mode register in timer mode
Table 1.13.6. Timer specifications in timer mode
(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
In this mode, the timer counts an internally generated count source. (See Table 1.13.6.) Figure 1.13.19
shows the timer Bi mode register in timer mode.
IN
Timer Bi mode register
b7
pin function
b6
b5
Item
Preliminary Specifications Rev. 0.9
b4
Specifications in this manual are tentative and subject to change.
b3
b2
b1
0
b0
0
Note 1: Timer B0.
Note 2: Timer B1,B2.
Count value is read out by reading timer Bi register
• When counting stopped
f
• Counts down
• When the timer underflows, it reloads the reload register contents before
1/(n+1)
Count start flag is set (= 1)
Count start flag is reset (= 0)
The timer underflows
Programmable I/O port
• When counting in progress
Bit symbol
1
TMOD0
TMOD1
, f
TCK0
TCK1
When a value is written to timer Bi register, it is written to both reload register
and counter
When a value is written to timer Bi register, it is written to only reload register
(Transferred to counter at next reload time)
MR0
MR1
MR2
MR3
Symbol
TBiMR(i=0 to 2)
8
continuing counting
, f
32
, f
C32
Nothing is assiigned (i = 1, 2)
In an attempt to write to this bit, write 0 . The value, if read, turns out
to be indeterminate.
Operation mode select bit
Invalid in timer mode
Can be 0 or 1
0 (Must always be 0 in timer mode ; i = 0)
Invalid in timer mode.
In an attempt to write to this bit, write 0 . The value, if read in
timer mode, turns out to be indeterminate.
Count source select bit
Renesas Technology Corp.
n : Set value
Bit name
039B
.
Address
16
to 039D
Specification
16
0 0 : f
0 1 : f
1 0 : f
1 1 : f
0 0 : Timer mode
b7 b6
b1 b0
.
When reset
00XX0000
1
8
32
C32
or f
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
2
Function
2
M16C/26 Group
(Note 2)
(Note 1)
R
W