參數(shù)資料
型號： P89LPC932A1
廠商： NXP Semiconductors N.V.
英文描述： 8-Bit Microcontroller with accelerated two-clock 80C51 core 8kB 3V byte-erasable flash with 512-byte data EEPROM
中文描述： 8位加速兩個(gè)小時(shí)的80C51單片機(jī)為核心的8kB 3V的字節(jié)可擦除閃存和512字節(jié)的EEPROM數(shù)據(jù)
文件頁數(shù)： 33/64頁
文件大?。?/td> 316K
代理商： P89LPC932A1
9397 750 14871
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 02 — 10 May 2005
33 of 64
Philips Semiconductors
P89LPC932A1
8-bit microcontroller with accelerated two-clock 80C51 core
7.20.8
Double buffering
The UART has a transmit double buffer that allows buffering of the next character to be
written to SBUF while the first character is being transmitted. Double buffering allows
transmission of a string of characters with only one stop bit between any two characters,
as long as the next character is written between the start bit and the stop bit of the
previous character.
Double buffering can be disabled. If disabled (DBMOD, i.e., SSTAT.7 = 0), the UART is
compatible with the conventional 80C51 UART. If enabled, the UART allows writing to
SnBUF while the previous data is being shifted out. Double buffering is only allowed in
Modes 1, 2 and 3. When operated in Mode 0, double buffering must be disabled
(DBMOD = 0).
7.20.9
Transmit interrupts with double buffering enabled (modes 1, 2 and 3)
Unlike the conventional UART, in double buffering mode, the Tx interrupt is generated
when the double buffer is ready to receive new data.
7.20.10
The 9
th
bit (bit 8) in double buffering (modes 1, 2 and 3)
If double buffering is disabled TB8 can be written before or after SBUF is written, as long
as TB8 is updated some time before that bit is shifted out. TB8 must not be changed until
the bit is shifted out, as indicated by the Tx interrupt.
If double buffering is enabled, TB8
must
be updated before SBUF is written, as TB8 will
be double-buffered together with SBUF data.
相關(guān)PDF資料
PDF描述
P89LPC932 80C51 8-bit microcontroller with two-clock core 8 KB 3 V low-power Flash with 512-byte data EEPROM
P89LPC932BA 80C51 8-bit microcontroller with two-clock core 8 KB 3 V low-power Flash with 512-byte data EEPROM
P89LPC932BDH 80C51 8-bit microcontroller with two-clock core 8 KB 3 V low-power Flash with 512-byte data EEPROM
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P89LPC932FHN 8-bit microcontroller with accelerated two-clock 80C51 core 8 kB Flash with 512-byte data EEPROM and 768-byte RAM
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
P89LPC932A1FA 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-Bit Microcontroller with accelerated two-clock 80C51 core 8kB 3V byte-erasable flash with 512-byte data EEPROM
P89LPC932A1FA,112 功能描述:8位微控制器 -MCU 8K FL/768B RAM/512B EE/CCU 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(shí)鐘頻率:50 MHz 程序存儲(chǔ)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(fēng)格:SMD/SMT
P89LPC932A1FA,129 功能描述:8位微控制器 -MCU 8K FL/768B RAM/512B EE/CCU 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(shí)鐘頻率:50 MHz 程序存儲(chǔ)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(fēng)格:SMD/SMT
P89LPC932A1FDH 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit microcontroller with accelerated two-clock 80C51 core 8 kB 3 V byte-erasable flash with 512-byte data EEPROM
P89LPC932A1FDH,512 功能描述:8位微控制器 -MCU 80C51 8K FL 768B RAM 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(shí)鐘頻率:50 MHz 程序存儲(chǔ)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(fēng)格:SMD/SMT
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