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参数资料
| 型号： | P89LPC952FBD,157 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 29/69页 |
| 文件大小： | 0K |
| 描述： | IC 80C51 MCU FLASH 8K 44-LQFD |
| 产品培训模块： | Migrating from 8/16-Bit MCUs to 32-Bit ARMs |
| 标准包装： | 800 |
| 系列： | LPC900 |
| 核心处理器： | 8051 |
| 芯体尺寸： | 8-位 |
| 速度： | 18MHz |
| 连通性： | I²C，SPI，UART/USART |
| 外围设备： | 欠压检测/复位，POR，PWM，WDT |
| 输入/输出数： | 40 |
| 程序存储器容量： | 8KB（8K x 8） |
| 程序存储器类型： | 闪存 |
| RAM 容量： | 512 x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 2.4 V ~ 3.6 V |
| 数据转换器： | A/D 8x10b |
| 振荡器型： | 内部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 44-LQFP |
| 包装： | 托盘 |
| 产品目录页面： | 706 (CN2011-ZH PDF) |
| 配用： | 622-1016-ND - BOARD FOR P89LPC952FA 44-PLCC 622-1008-ND - BOARD FOR LPC9103 10-HVSON OM10075-ND - EVAL BOARD FOR LPC952 568-4000-ND - DEMO BOARD SPI/I2C TO DUAL UART 568-3510-ND - DEMO BOARD SPI/I2C TO UART 622-1002-ND - USB IN-CIRCUIT PROG LPC9XX 568-1759-ND - EMULATOR DEBUGGER/PROGRMMR LPC9X |
| 其它名称： | 568-2014-5 935280152157 P89LPC952FBD P89LPC952FDH-S |
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P89LPC952_954_4
NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 04 — 24 July 2008
35 of 69
NXP Semiconductors
P89LPC952/954
8-bit microcontroller with 10-bit ADC
stop bit is not saved. The baud rate is programmable to either 1
16 or
1
32 of the CPU clock
frequency, as determined by the SMOD1 bit in PCON. The SMOD1 bit controls the Timer
1 output rate available to both UARTs.
7.19.4 Mode 3
11 bits are transmitted (through TXDn) or received (through RXDn): a start bit (logic 0), 8
data bits (LSB rst), a programmable 9th data bit, and a stop bit (logic 1). In fact, Mode 3 is
the same as Mode 2 in all respects except baud rate. The baud rate in Mode 3 is variable
and is determined by the Timer 1 overow rate or the Baud Rate Generator (described in
7.19.5 Baud rate generator and selection
Each enhanced UART has an independent Baud Rate Generator. The baud rate is
determined by a baud-rate preprogrammed into the BRGR1_n and BRGR0_n SFRs
which together form a 16-bit baud rate divisor value that works in a similar manner as
Timer 1 but is much more accurate. If the baud rate generator is used, Timer 1 can be
used for other timing functions.
The UARTs can use either Timer 1 or their respective baud rate generator output (see
Figure 8). Note that Timer T1 is further divided by 2 if the SMOD1 bit (PCON.7) is cleared.
The independent Baud Rate Generators use OSCCLK.
7.19.6 Framing error
Framing error is reported in the status register (SnSTAT). In addition, if SMOD0 (PCON.6)
is ‘1’, framing errors can be made available in SnCON.7 respectively. If SMOD0 is ‘0’,
SnCON.7 is SM0_n. It is recommended that SM0_n and SM1_n (SnCON.7:6) are set up
when SMOD0 is ‘0’.
7.19.7 Break detect
Break detect is reported in the status register (SnSTAT). 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.
7.19.8 Double buffering
The UART has a transmit double buffer that allows buffering of the next character to be
written to SnBUF while the rst 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.
Fig 8.
Baud rate sources for UART (Modes 1, 3)
baud rate modes 1 and 3
SBRGS = 1
SBRGS = 0
SMOD1 = 0
SMOD1 = 1
timer 1 overflow
(PCLK-based)
baud rate generator
(CCLK-based)
002aaa897
÷2
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相关代理商/技术参数 |
参数描述 |
|---|---|
| P89LPC954 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:8-bit microcontroller with accelerated two-clock 80C51 core 8 kB/16 kB 3 V byte-erasable flash with 10-bit ADC |
| P89LPC954FA | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:8-bit microcontroller with accelerated two-clock 80C51 core 8 kB/16 kB 3 V byte-erasable flash with 10-bit ADC |
| P89LPC954FA,529 | 功能描述:8位微控制器 -MCU 16K FL/1K RAM/512B EE/10B ADC RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| P89LPC954FBD44 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:8-bit microcontroller with accelerated two-clock 80C51 core 8 kB/16 kB 3 V byte-erasable flash with 10-bit ADC |
| P89LPC954FBD44,151 | 功能描述:8位微控制器 -MCU 16K FL/1K RAM/512B RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
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