參數(shù)資料
型號： μPD780306
廠商： NEC Corp.
英文描述： 8 Bit Single Chip Microcontrollers(8位單片微控制器)
中文描述： 8位單片機(jī)微控制器（8位單片微控制器）
文件頁數(shù)： 20/70頁
文件大?。?/td> 525K
代理商： ΜPD780306
20
μ
PD780306, 780308
X1
X2
XT1/P07
XT2
f
XT
f
XX
2
f
XX
2
2
f
XX
2
3
f
XX
2
4
f
XT
2
f
X
2
STOP
f
X
CPU
clock
(f
CPU
)
Subsystem
clock
oscillator
Main
system
clock
oscillator
Scaler
Selec-
tor
Prescaler
Prescaler
Standby
control
circuit
Selec-
tor
Watch timer
Clock output function
Clock to
peripheral
hardware
To INTP0
sampling clock
f
XX
1/2
Interval timer
External event counter
Timer output
PWM output
Pulse width measurement
Square wave output
One-shot pulse output
1 channel
1 channel
1 output
1 output
2 inputs
1 output
1 output
2 channels
2 channels
2 outputs
–
–
2 outputs
–
1 channel
–
–
–
–
–
–
1 channel
–
–
–
–
–
–
Interrupt request
2
2
1
1
Test input
–
–
1 input
–
5.2
CLOCK GENERATOR
There are two kinds of clocks, main system clock and subsystem clock.
The minimum instruction execution time can also be changed.
0.4
μ
s/0.8
μ
s/1.6
μ
s/3.2
μ
s/6.4
μ
s/12.8
μ
s (main system clock: in 5.0 MHz operation)
122
μ
s (subsystem clock: in 32.768 kHz operation)
Figure 5-1. Clock Generator Block Diagram
5.3
TIMER/EVENT COUNTER
Five timer/event counter channels are incorporated.
16-bit timer/event counter
8-bit timer/event counter
Watch timer
Watchdog timer
: 1 channel
: 2 channels
: 1 channel
: 1 channel
Table 5-2. Operation of Timer/Event Counter
16-bit Timer/
Event Counter
8-bit Timer/
Event Counter
Watch Timer
Watchdog Timer
Operating
mode
Function
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