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參數(shù)資料
| 型號： | 87LPC768 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Low power, low price, low pin count(20 pin) microcontroller with 4 kB OTP and 8-bit A/D,and Pulse Width Modulator(帶4 kB OTP、8位A/D和脈寬調節(jié)的低功耗，低價格，少引腳（20引腳）的微控制器) |
| 中文描述： | 低功耗，低價格，低引腳數(shù)（20針）與4 KB的OTP和8位A / D和脈寬調制器（帶4 KB的檢察官辦公室，8位A / D轉換和脈寬調節(jié)的低功耗微控制器，低價格，少引腳（20引腳）的微控制器） |
| 文件頁數(shù)： | 40/66頁 |
| 文件大?。?/td> | 314K |
| 代理商： | 87LPC768 |
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Philips Semiconductors
Preliminary specification
87LPC768
Low power, low price, low pin count (20 pin) microcontroller with
4 kB OTP 8-bit A/D, Pulse Width Modulator
2000 May 02
38
Mode 1
Mode 1 is the same as Mode 0, except that all 16 bits of the timer
register (THn and TLn) are used. See Figure 28
Mode 2
Mode 2 configures the Timer register as an 8-bit Counter (TL1) with
automatic reload, as shown in Figure 29. Overflow from TLn not only
sets TFn, but also reloads TLn with the contents of THn, which must
be preset by software. The reload leaves THn unchanged. Mode 2
operation is the same for Timer 0 and Timer 1.
Mode 3
When Timer 1 is in Mode 3 it is stopped. The effect is the same as
setting TR1 = 0.
Timer 0 in Mode 3 establishes TL0 and TH0 as two separate 8-bit
counters. The logic for Mode 3 on Timer 0 is shown in Figure 30.
TL0 uses the Timer 0 control bits: C/T, GATE, TR0, INT0, and TF0.
TH0 is locked into a timer function (counting machine cycles) and
takes over the use of TR1 and TF1 from Timer 1. Thus, TH0 now
controls the “Timer 1” interrupt.
Mode 3 is provided for applications that require an extra 8-bit timer.
With Timer 0 in Mode 3, an 87LPC768 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 into and out of its own Mode 3. It can still
be used by the serial port as a baud rate generator, or in any
application not requiring an interrupt.
SU01174
TLN
(8-BITS)
THN
(8-BITS)
OSC/6 OR
OSC/12
OVERFLOW
Tn PIN
TnOE
TOGGLE
CONTROL
C/T = 1
C/T = 0
Tn PIN
TRn
GATE
INTn PIN
INTERRUPT
TFn
Figure 28. Timer/Counter 0 or 1 in Mode 1 (16-Bit Counter)
SU01175
TLN
(8-BITS)
THN
(8-BITS)
OSC/6 OR
OSC/12
OVERFLOW
Tn PIN
TnOE
TOGGLE
CONTROL
C/T = 1
C/T = 0
Tn PIN
TRn
GATE
INTn PIN
INTERRUPT
TFn
RELOAD
Figure 29. Timer/Counter 0 or 1 in Mode 2 (8-Bit Auto-Reload)
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| 87LPC769 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low power, low price, low pin count 20 pin microcontroller with 4 kB OTP 8-bit A/D, and DAC |
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