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| 型號(hào)： | P89V662FA,512 |
| 廠商： | NXP Semiconductors |
| 文件頁(yè)數(shù)： | 46/90頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC 80C51 MCU FLASH 32K 44-PLCC |
| 產(chǎn)品培訓(xùn)模塊： | Migrating from 8/16-Bit MCUs to 32-Bit ARMs |
| 標(biāo)準(zhǔn)包裝： | 26 |
| 系列： | 89V |
| 核心處理器： | 8051 |
| 芯體尺寸： | 8-位 |
| 速度： | 40MHz |
| 連通性： | I²C，SPI，UART/USART |
| 外圍設(shè)備： | POR，PWM，WDT |
| 輸入/輸出數(shù)： | 36 |
| 程序存儲(chǔ)器容量： | 32KB（32K x 8） |
| 程序存儲(chǔ)器類(lèi)型： | 閃存 |
| RAM 容量： | 1K x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 4.5 V ~ 5.5 V |
| 振蕩器型： | 內(nèi)部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 44-LCC（J 形引線） |
| 包裝： | 管件 |
| 產(chǎn)品目錄頁(yè)面： | 706 (CN2011-ZH PDF) |
| 其它名稱： | 568-2434-5 935280831512 P89V662FA |
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P89V660_662_664
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 3.1 — 17 October 2011
50 of 90
NXP Semiconductors
P89V660/662/664
80C51 with 512 B/1 kB/2 kB RAM, dual I2C-bus, SPI
6.7.5 Framing error
Framing error (FE) is reported in the SCON.7 bit if SMOD0 (PCON.6) = 1. If SMOD0 = 0,
SCON.7 is the SM0 bit for the UART, it is recommended that SM0 is set up before
SMOD0 is set to ‘1’.
6.7.6 More about UART mode 1
Reception is initiated by a detected 1-to-0 transition at RXD. For this purpose RXD is
sampled at a rate of 16 times whatever baud rate has been established. When a transition
is detected, the divide-by-16 counter is immediately reset to align its rollovers with the
boundaries of the incoming bit times.
The 16 states of the counter divide each bit time into 16ths. At the 7th, 8th, and 9th
counter states of each bit time, the bit detector samples the value of RXD. The value
accepted is the value that was seen in at least 2 of the 3 samples. This is done for noise
rejection. If the value accepted during the first bit time is not 0, the receive circuits are
reset and the unit goes back to looking for another 1-to-0 transition. This is to provide
rejection of false start bits. If the start bit proves valid, it is shifted into the input shift
register, and reception of the rest of the frame will proceed.
The signal to load SBUF and RB8, and to set RI, will be generated if, and only if, the
following conditions are met at the time the final shift pulse is generated: (a) RI = 0, and
(b) Either SM2 = 0, or the received stop bit = 1.
If either of these two conditions is not met, the received frame is irretrievably lost. If both
conditions are met, the stop bit goes into RB8, the 8 data bits go into SBUF, and RI is
activated.
6.7.7 More about UART modes 2 and 3
Reception is performed in the same manner as in mode 1.
3
TB8
The 9th data bit that will be transmitted in Modes 2 and 3. Set or clear
by software as desired.
2
RB8
In Modes 2 and 3, is the 9th data bit that was received. In Mode 1, it
SM2 = 0, RB8 is the stop bit that was received. In Mode 0, RB8 is
undefined.
1
TI
Transmit interrupt flag. Set by hardware at the end of the 8th bit time in
Mode 0, or at the stop bit in the other modes, in any serial
transmission. Must be cleared by software.
0
RI
Receive interrupt flag. Set by hardware at the end of the 8th bit time in
Mode 0, or approximately halfway through the stop bit time in all other
modes. (See SM2 for exceptions). Must be cleared by software.
Table 39.
SCON - Serial port control register (address 98H) SM0/SM1 mode definition
SM0, SM1
UART mode
Baud rate
0 0
0: shift register
CPU clock / 6
0 1
1: 8-bit UART
variable
1 0
2: 9-bit UART
CPU clock / 32 or CPU clock / 16
1 1
3: 9-bit UART
variable
Table 38.
SCON - Serial port control register (address 98H) bit description …continued
Bit
Symbol
Description
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| P89V662FBC | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit 80C51 5 V low power 16 kB/32 kB/64 kB flash microcontroller with 512 B/1 kB/2 kB RAM, dual I2C-bus, SPI |
| P89V662FBC,557 | 功能描述:8位微控制器 -MCU 80C51 32K FL / 1K RM 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 |
| P89V664 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit 80C51 5 V low power 16 kB/32 kB/64 kB flash microcontroller with 512 B/1 kB/2 kB RAM, dual I2C-bus, SPI |
| P89V664FA | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit 80C51 5 V low power 16 kB/32 kB/64 kB flash microcontroller with 512 B/1 kB/2 kB RAM, dual I2C-bus, SPI |
| P89V664FA,512 | 功能描述:8位微控制器 -MCU 80C51 64K FL / 2K RM 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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