- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄382369 > P89LPC931 8-bit microcontrollers with two-clock 80C51 core 4 kB/8 kB 3 V Flash with 256-byte data RAM PDF資料下載
參數(shù)資料
| 型號(hào)： | P89LPC931 |
| 英文描述： | 8-bit microcontrollers with two-clock 80C51 core 4 kB/8 kB 3 V Flash with 256-byte data RAM |
| 中文描述： | 8位微控制器兩個(gè)小時(shí)80C51的核心4 KB的/ 8 KB的256 3伏閃存內(nèi)存字節(jié)的數(shù)據(jù) |
| 文件頁數(shù)： | 26/54頁 |
| 文件大小： | 1015K |
| 代理商： | P89LPC931 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁當(dāng)前第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁
Philips Semiconductors
P89LPC930/931
8-bit microcontrollers with two-clock 80C51 core
Product data
Rev. 03 — 06 October 2003
26 of 54
9397 750 12122
Koninklijke Philips Electronics N.V. 2003. All rights reserved.
8.17.1
Mode 0
Serial data enters and exits through RxD. TxD outputs the shift clock. 8 bits are
transmitted or received, LSB first. The baud rate is fixed at
1
16
of the CPU clock
frequency.
8.17.2
Mode 1
10 bits are transmitted (through TxD) or received (through RxD): a start bit (logic ‘0’),
8 data bits (LSB first), and a stop bit (logic ‘1’). When data is received, the stop bit is
stored in RB8 in Special Function Register SCON. The baud rate is variable and is
determined by the Timer 1 overflow rate or the Baud Rate Generator (described in
Section 8.17.5 “Baud rate generator and selection”
).
8.17.3
Mode 2
11 bits are transmitted (through TxD) or received (through RxD): start bit (logic ‘0’),
8 data bits (LSB first), a programmable 9
th
data bit, and a stop bit (logic ‘1’). When
data is transmitted, the 9
th
data bit (TB8 in SCON) can be assigned the value of ‘0’ or
‘1’. Or, for example, the parity bit (P, in the PSW) could be moved into TB8. When
data is received, the 9
th
data bit goes into RB8 in Special Function Register SCON,
while the 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.
8.17.4
Mode 3
11 bits are transmitted (through TxD) or received (through RxD): a start bit (logic ‘0’),
8 data bits (LSB first), a programmable 9
th
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 overflow rate or the Baud Rate
Generator (described in section
Section 8.17.5 “Baud rate generator and selection”
).
8.17.5
Baud rate generator and selection
The P89LPC930/931 enhanced UART has an independent Baud Rate Generator.
The baud rate is determined by a baud-rate preprogrammed into the BRGR1 and
BRGR0 SFRs which together form a 16-bit baud rate divisor value that works in a
similar manner as Timer 1. If the baud rate generator is used, Timer 1 can be used for
other timing functions.
The UART can use either Timer 1 or the baud rate generator output (see
Figure 6
).
Note that Timer T1 is further divided by 2 if the SMOD1 bit (PCON.7) is cleared. The
independent Baud Rate Generator uses OSCCLK.
Fig 6.
Baud rate sources for UART (Modes 1, 3).
Baud Rate Modes 1 and 3
SBRGS = 1
SBRGS = 0
SMOD1 = 0
SMOD1 = 1
2
Timer 1 Overflow
(PCLK-based)
Baud Rate Generator
(CCLK-based)
002aaa419
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| P8C15416Y-12 | IC-8-BIT CMOS CPU |
| P903 | |
| P90C101ABA | 16-Bit Microcontroller |
| P90C101ABB | 16-Bit Microcontroller |
| P90CL301 | Low voltage 16-bit microcontroller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| P89LPC9311FDH,129 | 功能描述:8位微控制器 -MCU PREF PART P89LPC931FDH 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 |
| P89LPC9311FDH-S | 功能描述:8位微控制器 -MCU PRF PRT P89LPC931FDH 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 |
| P89LPC931A1 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit microcontroller with accelerated two-clock 80C51 core 4 kB/8 kB 3 V byte-erasable flash |
| P89LPC931A1FDH | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit microcontroller with accelerated two-clock 80C51 core 4 kB/8 kB 3 V byte-erasable flash |
| P89LPC931A1FDH,512 | 功能描述:8位微控制器 -MCU IC 80C51 MCU FLASH 8K 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。