tmp86fp24 TOSHIBA Semiconductor CORPORATION, tmp86fp24 Datasheet - Page 80

• Manufacturer Part Number: tmp86fp24
• Description: 8 Bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

TC1 pin input
Internal clock
Up counter
TC1DRA
INTTC1 interrupt
TC1 pin input
Internal clock
Up counter
TC1DRA
INTTC1 interrupt
(4) Window mode
?
Command start
?
Command start
“H” Width
“L” Width
logical AND-ed product of the TC1 pin input (Window pulse) and an internal clock. The
contents of TC1DRA are compared with the contents of up counter. If a match is found,
an INTTC1 interrupt is generated, and the counter is cleared. It is possible to select
either positive logic or negative logic for the TC1 pin input (by using the TC1 start
control TC1CR<TC1S>).
count can be analyzed by program. To put another way, the frequency of the applied
pulse must be sufficiently low, compared with that of the internally set source clock.
In this mode, counting up is performed on the rising edge of the pulse that is the
The maximum frequency that can be applied to the pin must be such that the related
7
9
Count start
0
Table 2.6.2 Timer/Counter 1 External Clock Source
NORMAL1/2, IDLE1/2 Modes
Count start
Figure 2.6.6 Window Mode Timing Chart
0
1
2
1
2
2
(a) Positive logic (at TC1S
(b) Negative logic (at TC1S
3
3
/fc
/fc
Minimum Input Pulse Width [s]
3
2
86FP24-78
Count stop
4
3
4
SLOW1/2, SLEEP1/2 Modes
Count stop
5
5
Match detect
10)
Count start
11)
6
2
2
6
3
3
/fs
/fs
Count start
7 0
Counter clear
Match detect
1
7
8
2
9 0
TMP86FP24
Counter clear
3
2007-08-24
1