參數(shù)資料
型號： P87LPC767BD,512
廠商： NXP Semiconductors
文件頁數(shù)： 9/61頁
文件大?。?/td> 0K
描述： IC 80C51 MCU 4K OTP 20-SOIC
產(chǎn)品培訓模塊： Migrating from 8/16-Bit MCUs to 32-Bit ARMs
標準包裝： 38
系列： LPC700
核心處理器： 8051
芯體尺寸： 8-位
速度： 20MHz
連通性： I²C，UART/USART
外圍設(shè)備： 欠壓檢測/復位，LED，POR，WDT
輸入/輸出數(shù)： 18
程序存儲器容量： 4KB（4K x 8）
程序存儲器類型： OTP
RAM 容量： 128 x 8
電壓 - 電源 (Vcc/Vdd)： 2.7 V ~ 6 V
數(shù)據(jù)轉(zhuǎn)換器： A/D 4x8b
振蕩器型： 內(nèi)部
工作溫度： 0°C ~ 70°C
封裝/外殼： 20-SOIC（0.295"，7.50mm 寬）
包裝： 管件
產(chǎn)品目錄頁面： 706 (CN2011-ZH PDF)
其它名稱： 568-1260-5
935264007512
P87LPC767BD
Philips Semiconductors
Product data
P87LPC767
Low power, low price, low pin count (20 pin)
microcontroller with 4-kbyte OTP and 8-bit A/D converter
2002 Mar 25
14
Internal Reference Voltage
An internal reference voltage generator may supply a default
reference when a single comparator input pin is used. The value of
the internal reference voltage, referred to as Vref, is 1.28 V ±10%.
Comparator Interrupt
Each comparator has an interrupt flag CMFn contained in its
configuration register. This flag is set whenever the comparator
output changes state. The flag may be polled by software or may be
used to generate an interrupt. The interrupt will be generated when
the corresponding enable bit ECn in the IEN1 register is set and the
interrupt system is enabled via the EA bit in the IEN0 register.
Comparators and Power Reduction Modes
Either or both comparators may remain enabled when Power Down
or Idle mode is activated. The comparators will continue to function
in the power reduction mode. If a comparator interrupt is enabled, a
change of the comparator output state will generate an interrupt and
wake up the processor. If the comparator output to a pin is enabled,
the pin should be configured in the push-pull mode in order to obtain
fast switching times while in power down mode. The reason is that
with the oscillator stopped, the temporary strong pull-up that
normally occurs during switching on a quasi-bidirectional port pin
does not take place.
Comparators consume power in Power Down and Idle modes, as
well as in the normal operating mode. This fact should be taken into
account when system power consumption is an issue.
Comparator Configuration Example
The code shown in Figure 7 is an example of initializing one
comparator. Comparator 1 is configured to use the CIN1A and
CMPREF inputs, outputs the comparator result to the CMP1 pin,
and generates an interrupt when the comparator output changes.
The interrupt routine used for the comparator must clear the
interrupt flag (CMF1 in this case) before returning.
SU01189
CmpInit:
mov
PT0AD,#30h
; Disable digital inputs on pins that are used
;
for analog functions: CIN1A, CMPREF.
anl
P0M2,#0cfh
; Disable digital outputs on pins that are used
orl
P0M1,#30h
;
for analog functions: CIN1A, CMPREF.
mov
CMP1,#24h
; Turn on comparator 1 and set up for:
;
– Positive input on CIN1A.
;
– Negative input from CMPREF pin.
;
– Output to CMP1 pin enabled.
call
delay10us
; The comparator has to start up for at
;
least 10 microseconds before use.
anl
CMP1,#0feh
; Clear comparator 1 interrupt flag.
setb
EC1
; Enable the comparator 1 interrupt. The
;
priority is left at the current value.
setb
EA
; Enable the interrupt system (if needed).
ret
; Return to caller.
Figure 7.
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P87LPC767BN 制造商:NXP Semiconductors 功能描述:MCU 8-Bit 87LP 80C51 CISC 4KB EPROM 3.3V/5V 20-Pin PDIP
P87LPC767BN,112 功能描述:8位微控制器 -MCU 80C51 4K/128 OTP ADC 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
P87LPC767FD 功能描述:8位微控制器 -MCU 4K/128 OTP LPC ADC EXT 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
P87LPC767FD,512 功能描述:8位微控制器 -MCU 4K/128 OTP LPC ADC 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
P87LPC767FN 功能描述:8位微控制器 -MCU 4K/128 OTP LPC ADC EXT 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
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