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參數(shù)資料
| 型號(hào)： | P89LPC9402FBD,557 |
| 廠商： | NXP Semiconductors |
| 文件頁數(shù)： | 33/60頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC 80C51 MCU FLASH 8K 64-LQFP |
| 標(biāo)準(zhǔn)包裝： | 450 |
| 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，LCD，LED，POR，PWM，WDT |
| 輸入/輸出數(shù)： | 23 |
| 程序存儲(chǔ)器容量： | 8KB（8K x 8） |
| 程序存儲(chǔ)器類型： | 閃存 |
| RAM 容量： | 256 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： | 64-LQFP |
| 包裝： | 托盤 |
| 其它名稱： | 935288631557 |
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P89LPC9402_1
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 01 — 22 April 2009
39 of 60
NXP Semiconductors
P89LPC9402
8-bit microcontroller with accelerated two-clock 80C51 core
7.27.5 Timing
The LCD controller timing controls the internal data ow of the device. This includes the
transfer of display data from the display RAM to the display segment outputs. The timing
also generates the LCD frame signal whose frequency is derived from the clock
frequency. The frame signal frequency is a xed division of the clock frequency from either
the internal or an external clock.
Frame frequency = fosc(LCD)/24.
7.27.6 Display register
A display latch holds the display data while the corresponding multiplex signals are
generated. There is a one-to-one relationship between the data in the display latch, the
LCD segment outputs, and each column of the display RAM.
7.27.7 Segment outputs
The LCD drive section includes 32 segment outputs S0 to S31. The segment output
signals are generated according to the multiplexed backplane signals and the display
latch data. When less than 32 segment outputs are required, the unused segment outputs
should be left open-circuit.
7.27.8 Backplane outputs
The LCD drive section has four backplane outputs BP0 to BP3. The backplane output
signals are generated in based on the selected LCD drive mode. If less than four
backplane outputs are required, the unused outputs can be left open-circuit. In the 1:3
multiplex drive mode, BP3 carries the same signal as BP1, therefore these two adjacent
outputs can be tied together to give enhanced drive capabilities. In the 1:2 multiplex drive
mode, BP0 and BP2, BP1 and BP3 respectively carry the same signals and may also be
paired to increase the drive capabilities. In the static drive mode the same signal is carried
by all four backplane outputs and they can be connected in parallel for very high drive
requirements.
7.27.9 Display RAM
The display RAM is a static 32
× 4-bit RAM which stores LCD data. There is a one-to-one
correspondence between the RAM addresses and the segment outputs, and between the
individual bits of a RAM word and the backplane outputs. The rst RAM column
corresponds to the 32 segments for backplane 0 (BP0). In multiplexed LCD applications
the segment data of the second, third and fourth column of the display RAM are
time-multiplexed with BP1, BP2 and BP3 respectively.
7.27.10 Data pointer
The Display RAM is addressed using the data pointer. Either a single byte or a series of
display bytes may be loaded into any location of the display RAM.
7.27.11 Output bank selector
The LCD controller includes a RAM bank switching feature in the static and 1:2 drive
modes. In the static drive mode, the BANK SELECT command may request the contents
of bit 2 to be selected for display instead of the contents of bit 0. In 1:2 mode, the contents
of bits 2 and 3 may be selected instead of bits 0 and 1. This allows display information to
be prepared in an alternative bank and then selected for display when it is assembled.
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| P89LPC9408 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit microcontroller with two-clock 80C51 core 8 kB 3 V byte-erasable flash, 32 segment x 4 LCD driver, 10-bit ADC |
| P89LPC9408FBD | 功能描述:8位微控制器 -MCU 8K FL/10B ADC LCD DRIVER 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 |
| P89LPC9408FBD,557 | 功能描述:8位微控制器 -MCU 8K FL/10B ADC LCD 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 |
| P89LPC9408FBD557 | 制造商:NXP Semiconductors 功能描述:P89LPC9408FBD/LQFP64/TRAYDPM// |
| P89LPC952 | 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 10-bit ADC |
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