參數(shù)資料
型號: μPD78052(A)
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): 20/76頁
文件大?。?/td> 386K
代理商: ΜPD78052(A)
20
μ
PD78052(A), 78053(A), 78054(A)
5.2
Clock Generator
Two types of generators, a main system clock generator and a subsystem clock generator, are available.
The 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: at 5.0-MHz operation)
122
μ
s (subsystem clock: at 32.768-kHz operation)
Figure 5-1. Clock Generator Block Diagram
16-Bit Timer/Event Counter 8-Bit Timer/Event Counter
Watch Timer
Watchdog Timer
External event counter
2 channels
Type
Timer output
PWM output
Square wave output
1 output
1 output
2 inputs
Pulse width measurement
2 outputs
Interrupt source
2
1
1
2
Function
1 channel
1 channel
2 channels
1 channel
Interval timer
1 channel
1 output
2 outputs
One-shot pulse output
1 output
Test input
1 input
5.3
Timer/Event Counter
The
μ
PD78052(A), 78053(A), and 78054(A) incorporate 5 channels of the timer/event counter.
16-bit timer/event counter
: 1 channel
8-bit timer/event counter
: 2 channels
Watch timer
: 1 channel
Watchdog timer
: 1 channel
Table 5-2. Types and Functions of Timer/Event Counter
XT1/P07
XT2
X1
X2
f
XT
f
XX
Subsystem
Clock
Oscillator
Watch Timer, Clock
Output Function
Prescaler
Main System
Clock
Oscillator
Clock to Peripheral
Hardware
CPU Clock
(f
CPU
)
Standby
Control
Circuit
Wait Control
Circuit
To INTP0
Sampling Clock
2
f
XX
2
2
f
XX
2
3
f
XX
2
4
f
XX
f
XT
2
Prescaler
Selector
Selector
f
X
2
f
X
STOP
Divider
2
1
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