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參數(shù)資料
| 型號(hào)： | UPD75116F |
| 廠商： | NEC Corp. |
| 英文描述： | 4-BIT SINGLE-CHIP MICROCOMPUTER |
| 中文描述： | 4位單片機(jī) |
| 文件頁數(shù)： | 21/78頁 |
| 文件大?。?/td> | 549K |
| 代理商： | UPD75116F |
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21
μ
PD75108,75112F,75116F
5.4
BASIC INTERVAL TIMER
The basic interval timer includes the following functions.
It operates as an interval timer which generates reference time interrupts.
It can be applied as a watchdog timer which detects when a program is out of control.
Selects and counts wait times when the standby mode is released.
It reads count contents.
Fig. 5-3 Basic Interval Timer Configuration
Remarks
*
indicates instruction execution.
Internal Bus
f
XX
/2
5
f
XX
/2
7
f
XX
/2
12
From Clock
Generator
4
BTM3
BTM2
BTM1
BTM0
BTM
MPX
BT
IRQBT
Set
BT Interrupt
Request Flag
Clear
Clear
Basic Interval Timer
(8-Bit Frequency Divider)
Wait Release
Signal during
Standby Release
8
3
Vector
Interrupt
Request
Signal
f
XX
/2
9
*
SET1
5.5
TIMER/EVENT COUNTER
The
μ
PD75116F incorporates two internal timer/event counter channels.
Timer/event counter channel 0 and channel 1 differ only in selectable count pulse (CP) and clock supply function
to serial interface and are the same in other configurations and functions.
The functions of the timer/event counter are as follows.
Operates as a programmable interval timer.
Outputs square waves in the desired frequency to the PTOn pin.
Operates as an event counter.
Use of TIn pin as an external interrupt input pin.
Divides the TIn pin input into N divisions and outputs it to the PTOn pin (frequency divider operation).
Supplies a serial shift clock to the serial interface circuit. (channel 0 only)
Count status read function.
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