參數(shù)資料
型號: PC89C660
廠商: NXP Semiconductors N.V.
元件分類: 8位微控制器
英文描述: 80C51 8-bit Flash microcontroller family
中文描述: 80C51的8位閃存微控制器系列
文件頁數(shù): 37/89頁
文件大小: 491K
代理商: PC89C660
Philips Semiconductors
Product data
P89C660/P89C662/P89C664/
P89C668
80C51 8-bit Flash microcontroller family
16KB/32KB/64KB ISP/IAP Flash with 512B/1KB/2KB/8KB RAM
2002 Oct 28
37
OSC
÷
n*
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
SU01253
* n = 6 in 6-clock mode, or 12 in 12-clock mode.
Figure 23. Timer 2 in Auto-Reload Mode (DCEN = 0)
÷
n*
C/T2 = 0
C/T2 = 1
TL2
TH2
TR2
CONTROL
T2 PIN
SU01254
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
* n = 6 in 6-clock mode, or 12 in 12-clock mode.
Figure 24. Timer 2 Auto Reload Mode (DCEN = 1)
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