参数资料
型号: P89C58
厂商: NXP Semiconductors N.V.
英文描述: 80C51 8-bit microcontroller family 4K/8K/16K/32K Flash
中文描述: 80C51的8位单片机系列4K/8K/16K/32K闪光
文件页数: 11/32页
文件大小: 212K
代理商: P89C58
Philips Semiconductors
Product specification
89C51/89C52/89C54/89C58
80C51 8-bit microcontroller family
4K/8K/16K/32K Flash
1999 Oct 27
11
OSC
÷
12
C/T2 = 0
C/T2 = 1
TR2
CONTROL
TL2
(8-BITS)
TH2
(8-BITS)
TF2
RCAP2L
RCAP2H
EXEN2
CONTROL
EXF2
TIMER 2
INTERRUPT
T2EX PIN
TRANSITION
DETECTOR
T2 PIN
RELOAD
SU00067
Figure 4. Timer 2 in Auto-Reload Mode (DCEN = 0)
÷
12
C/T2 = 0
C/T2 = 1
TL2
TH2
TR2
CONTROL
T2 PIN
SU00730
FFH
FFH
RCAP2L
RCAP2H
(UP COUNTING RELOAD VALUE)
T2EX PIN
TF2
INTERRUPT
COUNT
DIRECTION
1 = UP
0 = DOWN
EXF2
OVERFLOW
(DOWN COUNTING RELOAD VALUE)
TOGGLE
OSC
Figure 5. Timer 2 Auto Reload Mode (DCEN = 1)
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