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參數(shù)資料
| 型號(hào)： | P89LPC916 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 8-bit microcontrollers with accelerated two-clock 80C51 core 2 kB 3 V Flash with 8-bit A/D converter |
| 中文描述： | 8 - 8加速雙位單片機(jī)80C51的時(shí)鐘核心2 Kb的3伏閃存位A / D轉(zhuǎn)換器 |
| 文件頁數(shù)： | 44/72頁 |
| 文件大?。?/td> | 344K |
| 代理商： | P89LPC916 |
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Philips Semiconductors
P89LPC915/916/917
8-bit microcontrollers with accelerated two-clock 80C51 core
Product data
Rev. 04 — 17 December 2004
44 of 72
9397 750 14397
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
9.18.2
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 9.18.5 “Baud rate generator and selection”
).
9.18.3
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
logic 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 CCLK frequency, as determined by the SMOD1 bit in PCON.
9.18.4
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 9.18.5 “Baud rate generator and selection”
).
9.18.5
Baud rate generator and selection
The P89LPC915/916/917 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 13
).
Note that Timer T1 is further divided by 2 if the SMOD1 bit (PCON.7) is cleared. The
independent Baud Rate Generator uses CCLK.
9.18.6
Framing error
Framing error is reported in the status register (SSTAT). In addition, if SMOD0
(PCON.6) is logic 1, framing errors can be made available in SCON.7, respectively. If
SMOD0 is logic 0, SCON.7 is SM0. It is recommended that SM0 and SM1
(SCON.7:6) are set up when SMOD0 is logic 0.
Fig 13. 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
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| P89LPC9161 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit microcontroller with accelerated two-clock 80C51 core, 2 kB 3 V byte-erasable flash with 8-bit ADC |
| P89LPC9161FDH | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit microcontroller with accelerated two-clock 80C51 core, 2 kB 3 V byte-erasable flash with 8-bit ADC |
| P89LPC9161FDH,129 | 功能描述:8位微控制器 -MCU IC 80C51 MCU FLASH 2KB 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 |
| P89LPC916FDH | 制造商:NXP Semiconductors 功能描述:MCU 8BIT 80C51 2K FLASH TSSOP16 制造商:NXP Semiconductors 功能描述:MCU 8BIT 80C51 2K FLASH, TSSOP16 |
| P89LPC916FDH,118 | 功能描述:8位微控制器 -MCU 2K FL/256B 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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