參數(shù)資料
型號： P89LPC9321FDH,512
廠商： NXP Semiconductors
文件頁數(shù)： 31/71頁
文件大?。?/td> 0K
描述： IC 80C51 MCU 8KB FLASH 28TSSOP
標(biāo)準(zhǔn)包裝： 51
系列： LPC900
核心處理器： 8051
芯體尺寸： 8-位
速度： 18MHz
連通性： I²C，SPI，UART/USART
外圍設(shè)備： 欠壓檢測/復(fù)位，POR，PWM，WDT
輸入/輸出數(shù)： 26
程序存儲器容量： 8KB（8K x 8）
程序存儲器類型： 閃存
EEPROM 大?。?/td> 512 x 8
RAM 容量： 768 x 8
電壓 - 電源 (Vcc/Vdd)： 2.4 V ~ 3.6 V
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 85°C
封裝/外殼： 28-TSSOP（0.173"，4.40mm 寬）
包裝： 管件
P89LPC9321
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 2 — 16 November 2010
37 of 71
NXP Semiconductors
P89LPC9321
8-bit microcontroller with accelerated two-clock 80C51 core
7.23.7 Break detect
Break detect is reported in the status register (SSTAT). A break is detected when
11 consecutive bits are sensed LOW. The break detect can be used to reset the device
and force the device into ISP mode.
7.23.8 Double buffering
The UART has a transmit double buffer that allows buffering of the next character to be
written to SnBUF 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
SBUF 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).
7.23.9 Transmit interrupts with double buffering enabled (modes 1, 2 and 3)
Unlike the conventional UART, in double buffering mode, the TI interrupt is generated
when the double buffer is ready to receive new data.
7.23.10 The 9th 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 TI interrupt.
If double buffering is enabled, TB must be updated before SBUF is written, as TB8 will be
double-buffered together with SBUF data.
7.24 I2C-bus serial interface
The I2C-bus uses two wires (SDA and SCL) to transfer information between devices
connected to the bus, and it has the following features:
Bidirectional data transfer between masters and slaves
Multi master bus (no central master)
Arbitration between simultaneously transmitting masters without corruption of serial
data on the bus
Serial clock synchronization allows devices with different bit rates to communicate via
one serial bus
Serial clock synchronization can be used as a handshake mechanism to suspend and
resume serial transfer
The I2C-bus may be used for test and diagnostic purposes.
A typical I2C-bus configuration is shown in Figure 13. The P89LPC9321 device provides a
byte-oriented I2C-bus interface that supports data transfers up to 400 kHz.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
P89LPC9321FN 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
P89LPC9321FN,112 功能描述:8位微控制器 -MCU Enhanced LPC932A1 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(fēng)格:SMD/SMT
P89LPC932A1 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 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(fēng)格:SMD/SMT
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