- 您現在的位置：買賣IC網 > PDF目錄382369 > P87LPC761 (NXP Semiconductors N.V.) Low power, low price, low pin count (16 pin) microcontroller with 2 kbyte OTP PDF資料下載
參數資料
| 型號： | P87LPC761 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Low power, low price, low pin count (16 pin) microcontroller with 2 kbyte OTP |
| 中文描述： | 低功耗，低價格，低引腳數（16針）2字節檢察官辦公室微控制器 |
| 文件頁數： | 20/58頁 |
| 文件大小： | 299K |
| 代理商： | P87LPC761 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁當前第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁
Philips Semiconductors
Preliminary data
P87LPC761
Low power, low price, low pin count (16 pin)
microcontroller with 2 kbyte OTP
2002 Mar 07
17
External Interrupt Inputs
The P87LPC761 has one individual interrupt input as well as the
Keyboard Interrupt function. The latter is described separately in this
section. The interrupt input is identical to those present on the
standard 80C51 microcontroller.
The external sources can be programmed to be level-activated or
transition-activated by setting or clearing bit IT0 in Register TCON. If
IT0 = 0, external interrupt 0 is triggered by a detected low at the
INT0 pin. If IT0 = 1, external interrupt 0 is edge-triggered. In this
mode if successive samples of the INT0 pin show a high in one
cycle and a low in the next cycle, interrupt request flag IE0 in TCON
is set, causing an interrupt request.
Since the external interrupt pins are sampled once each machine
cycle, an input high or low should hold for at least 6 CPU Clocks to
ensure proper sampling. If the external interrupt is
transition-activated, the external source has to hold the request pin
high for at least one machine cycle, and then hold it low for at least
one machine cycle. This is to ensure that the transition is seen and
that interrupt request flag IE0 is set. IE0 is automatically cleared by
the CPU when the service routine is called.
If the external interrupt is level-activated, the external source must
hold the request active until the requested interrupt is actually
generated. If the external interrupt is still asserted when the interrupt
service routine is completed another interrupt will be generated. It is
not necessary to clear the interrupt flag IE0 when the interrupt is
level sensitive, it simply tracks the input pin level.
If an external interrupt is enabled when the P87LPC761 is put into
Power Down or Idle mode, the interrupt will cause the processor to
wake up and resume operation. Refer to the section on Power
Reduction Modes for details.
SU01570
WAKEUP
(IF IN POWER
DOWN)
EA
(FROM IEN0
REGISTER)
INTERRUPT
TO CPU
IE0
EX0
BOF
EBO
KBF
EKB
CM2
EC2
WDT
EWD
CM1
EC1
TF0
ET0
TF1
ET1
RI + TI
ES
ATN
EI2
Figure 9. Interrupt Sources, Interrupt Enables, and Power Down Wakeup Sources
相關PDF資料 |
PDF描述 |
|---|---|
| P87LPC762 | Low power, low price, low pin count 20 pin microcontroller with 2 kbyte OTP |
| P87LPC768 | Low Power, Low System Cost 80C51 MCU with ADC and PWM |
| P87LPC768BN | Low Power, Low System Cost 80C51 MCU with ADC and PWM |
| P88-3004 | TONER VACUUM STD 220/240V |
| P88-3005 | TONER FILTER STD 0.3 MICRON |
相關代理商/技術參數 |
參數描述 |
|---|---|
| P87LPC761BDH | 功能描述:8位微控制器 -MCU 2K/128 OTP 2.7-6V COMM RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 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 |
| P87LPC761BDH,112 | 功能描述:8位微控制器 -MCU 2K/128 OTP 2.7-6V RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 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 |
| P87LPC761BN | 功能描述:8位微控制器 -MCU 2K/128 OTP 2.7-6V COMM DIP RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 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 |
| P87LPC761BN,112 | 功能描述:8位微控制器 -MCU 2K/128 OTP 2.7-6V RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 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 |
| P87LPC762 | 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 2 kbyte OTP |
發布緊急采購，3分鐘左右您將得到回復。