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參數(shù)資料
| 型號： | P87LPC764 |
| 英文描述： | Low power. low price. low pin count (20 pin) microcontroller with 4 kbyte OTP |
| 中文描述： | 低功耗。低廉的價格。低引腳數(shù)（20針）4字節(jié)檢察官辦公室微控制器 |
| 文件頁數(shù)： | 32/56頁 |
| 文件大?。?/td> | 312K |
| 代理商： | P87LPC764 |
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Philips Semiconductors
Preliminary specification
87LPC762
Low power, low price, low pin count (20 pin)
microcontroller with 2 kbyte OTP
2001 Apr 04
29
Mode 0
Putting either Timer into Mode 0 makes it look like an 8048 Timer,
which is an 8-bit Counter with a divide-by-32 prescaler. Figure 24
shows Mode 0 operation.
In this mode, the Timer register is configured as a 13-bit register. As
the count rolls over from all 1s to all 0s, it sets the Timer interrupt
flag TFn. The count input is enabled to the Timer when TRn = 1 and
either GATE = 0 or INTn = 1. (Setting GATE = 1 allows the Timer to
be controlled by external input INTn, to facilitate pulse width
measurements). TRn is a control bit in the Special Function Register
TCON (Figure 23). The GATE bit is in the TMOD register.
The 13-bit register consists of all 8 bits of THn and the lower 5 bits
of TLn. The upper 3 bits of TLn are indeterminate and should be
ignored. Setting the run flag (TRn) does not clear the registers.
Mode 0 operation is the same for Timer 0 and Timer 1. See
Figure 24. There are two different GATE bits, one for Timer 1
(TMOD.7) and one for Timer 0 (TMOD.3).
BIT
TCON.7
SYMBOL
TF1
FUNCTION
Timer 1 overflow flag. Set by hardware on Timer/Counter overflow. Cleared by hardware when the
interrupt is processed, or by software.
Timer 1 Run control bit. Set/cleared by software to turn Timer/Counter 1 on/off.
Timer 0 overflow flag. Set by hardware on Timer/Counter overflow. Cleared by hardware when the
processor vectors to the interrupt routine, or by software.
Timer 0 Run control bit. Set/cleared by software to turn Timer/Counter 0 on/off.
Interrupt 1 Edge flag. Set by hardware when external interrupt 1 edge is detected. Cleared by
hardware when the interrupt is processed, or by software.
Interrupt 1 Type control bit. Set/cleared by software to specify falling edge/low level triggered
external interrupts.
Interrupt 0 Edge flag. Set by hardware when external interrupt 0 edge is detected. Cleared by
hardware when the interrupt is processed, or by software.
Interrupt 0 Type control bit. Set/cleared by software to specify falling edge/low level triggered
external interrupts.
TCON.6
TCON.5
TR1
TF0
TCON.4
TCON.3
TR0
IE1
TCON.2
IT1
TCON.1
IE0
TCON.0
IT0
IT0
SU01172
IE0
IT1
IE1
TR0
TF0
TR1
TF1
0
1
2
3
4
5
6
7
TCON
Reset Value: 00h
Bit Addressable
Address: 88h
Figure 23. Timer/Counter Control Register (TCON)
SU01173
TLN
(5-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 24. Timer/Counter 0 or 1 in Mode 0 (13-Bit Counter)
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PDF描述 |
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| P87LPC764 | Low power, low price, low pin count(20 pin) microcontroller with4 kB OTP(帶4 kB OTP的低功耗，低價格，少引腳（20引腳）的微控制器) |
| P87LPC767 | Low power, low price, low pin count 20 pin microcontroller with 4-kbyte OTP and 8-bit A/D converter |
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| P87LPC769 | Low power, low price, low pin count 20 pin microcontroller with 4 kB OTP 8-bit A/D, and DAC |
| P87LPC769HD512 | IC-SM-8-BIT MCU |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| P87LPC764BD | 制造商:PHILIPS-SEMI 功能描述: |
| P87LPC764BD,512 | 功能描述:8位微控制器 -MCU 80C51 4K/128 OTP RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT |
| P87LPC764BD/01 | 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 kbyte OTP |
| P87LPC764BD/01,529 | 功能描述:8位微控制器 -MCU 4K/128 OTP 2.7-6V LO PWR SO20 RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT |
| P87LPC764BD/CP3220 | 制造商:NXP Semiconductors 功能描述:- Rail/Tube |
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