參數(shù)資料
型號(hào): uPSD3251
廠商: 意法半導(dǎo)體
英文描述: Flash Programmable System Devices with 8032 Microcontroller Core(帶8032微控制器內(nèi)核的Flash可編程系統(tǒng)設(shè)備)
中文描述: 閃存可編程系統(tǒng)設(shè)備與8032微控制器內(nèi)核(帶8032微控制器內(nèi)核的閃存可編程系統(tǒng)設(shè)備)
文件頁(yè)數(shù): 53/128頁(yè)
文件大?。?/td> 1566K
代理商: UPSD3251
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μPSD3251F
Mode 3.
Timer 1 in Mode 3 simply holds its count.
The effect is the same as setting TR1 = 0.
Timer 0 in Mode 3 establishes TL0 and TH0 as two
separate counters. The logic for Mode 3 on Timer
0 is shown in Figure 24. TL0 uses the Timer 0 con-
trol Bits: C/T, GATE, TR0, INT0, and TF0. TH0 is
locked into a timer function (counting machine cy-
cles) and takes over the use of TR1 and TF1 from
Timer 1. Thus, TH0 now controls the
Timer 1
In-
terrupt.
Mode 3 is provided for applications requiring an
extra 8-bit timer on the counter. With Timer 0 in
Mode 3, an μPSD3251F device can look like it has
three Timer/Counters. When Timer 0 is in Mode 3,
Timer 1 can be turned on and off by switching it out
of and into its own Mode 3, or can still be used by
the serial port as a baud rate generator, or in fact,
in any application not requiring an interrupt.
Figure 24. Timer/Counter Mode 3: Two 8-bit Counters
AI06624
f
OSC
TF0
Interrupt
Gate
TR0
INT0 pin
T0 pin
Control
TL0
(8 bits)
C/T = 0
C/T = 1
÷
12
f
OSC
TF1
Interrupt
Control
TH1
(8 bits)
÷
12
TR1
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