參數(shù)資料
型號(hào): P89C51X2FA
廠商: NXP SEMICONDUCTORS
元件分類: 微控制器/微處理器
英文描述: 80C51 8-bit Flash microcontroller family
中文描述: 8-BIT, FLASH, 33 MHz, MICROCONTROLLER, PQCC44
封裝: PLASTIC, LCC-44
文件頁數(shù): 18/68頁
文件大?。?/td> 404K
代理商: P89C51X2FA
Philips Semiconductors
Preliminary data
P89C51RA2/RB2/RC2/RD2xx
80C51 8-bit Flash microcontroller family
8KB/16KB/32KB/64KB ISP/IAP Flash with 512B/512B/512B/1KB RAM
2002 Jul 18
18
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 9. 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 10. Timer 2 Auto Reload Mode (DCEN = 1)
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