Fujitsu 8FX User Manual

MB95630H Series
144 FUJITSU SEMICONDUCTOR LIMITED MN702-00009-2v0-E
CHAPTER 11 8/16-BIT COMPOSITE TIMER
11.6 Operation of Interval Timer Function
(One-shot Mode)
11.6 Operation of Interval Timer Function
(One-shot Mode)
This section describes the operation of the interval timer function (one-shot
mode) of the 8/16-bit composite timer.
■ Operation of Interval Timer Function (One-shot Mode)
To use the interval timer function (one-shot mode), do the settings shown in Figure 11.6-1.
Figure 11.6-1 Settings of Interval Timer Function (One-shot Mode)
As for the interval timer function (one-shot mode), enabling timer operation (Tn0CR1/
Tn1CR1:STA = 1) causes the counter to start counting from "0x00" at the rising edge of a
selected count clock signal. When the counter value matches the value of the 8/16-bit
composite timer data register (Tn0DR/Tn1DR), the timer output (TMCRn:TO0/TO1) is
inverted, the interrupt flag (Tn0CR1/Tn1CR1:IF) is set to "1", the timer operation enable bit
(Tn0CR1/Tn1CR1:STA) is set to "0", and the counter stops counting.
The value of the 8/16-bit composite timer data register (Tn0DR/Tn1DR) is transferred to the
temporary storage latch (comparison data storage latch) in the comparator when the counter
starts counting. Do not write "0x00" to the 8/16-bit composite timer data register.
Figure 11.6-2 shows the operation of the interval timer function in 8-bit operation.
bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0
Tn0CR0/Tn1CR0IFEC2C1C0F3F2F1F0
❍❍❍❍0000
Tn0CR1/Tn1CR1 STA HO IE IR BF IF SO OE
1 ❍❍ ××❍❍❍
TMCRn TO1 TO0 TIS MOD FE11 FE10 FE01 FE00
❍❍× ❍❍❍❍❍
Tn0DR/Tn1DR Sets interval time (counter compare value)
❍: Used bit
×: Unused bit
1: Set to "1"
0: Set to "0"

Fujitsu 8FX Specifications

General

Brand	Fujitsu
Model	8FX
Category	Computer Hardware
Language	English