參數(shù)資料
型號: P89LPC9321FA,529
廠商: NXP Semiconductors
文件頁數(shù): 28/71頁
文件大?。?/td> 0K
描述: IC 80C51 MCU FLASH 8K 28-PLCC
標準包裝: 37
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
外圍設備: 欠壓檢測/復位,POR,PWM,WDT
輸入/輸出數(shù): 26
程序存儲器容量: 8KB(8K x 8)
程序存儲器類型: 閃存
EEPROM 大?。?/td> 512 x 8
RAM 容量: 768 x 8
電壓 - 電源 (Vcc/Vdd): 2.4 V ~ 3.6 V
振蕩器型: 內部
工作溫度: -40°C ~ 85°C
封裝/外殼: 28-PLCC
包裝: 管件
配用: 568-1758-ND - BOARD EVAL FOR LPC93X MCU FAMILY
其它名稱: 935287628529
P89LPC9321
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 2 — 16 November 2010
34 of 71
NXP Semiconductors
P89LPC9321
8-bit microcontroller with accelerated two-clock 80C51 core
7.22.7 Alternating output mode
In asymmetrical mode, the user can set up PWM channels A/B and C/D as alternating
pairs for bridge drive control. In this mode the output of these PWM channels are
alternately gated on every counter cycle.
7.22.8 PLL operation
The PWM module features a Phase Locked Loop that can be used to generate a
CCUCLK frequency between 16 MHz and 32 MHz. At this frequency the PWM module
provides ultrasonic PWM frequency with 10-bit resolution provided that the crystal
frequency is 1 MHz or higher. The PLL is fed an input signal from 0.5 MHz to 1 MHz and
generates an output signal of 32 times the input frequency. This signal is used to clock the
timer. The user will have to set a divider that scales PCLK by a factor from 1 to 16. This
divider is found in the SFR register TCR21. The PLL frequency can be expressed as
shown in Equation 1:
(1)
Where: N is the value of PLLDV3:0.
Fig 9.
Symmetrical PWM
TOR2
compare value
timer value
non-inverted
inverted
002aaa894
0
Fig 10. Alternate output mode
TIMER VALUE
002aaa895
0
TOR2
COMPARE VALUE A (or C)
COMPARE VALUE B (or D)
PWM OUTPUT (OCA or OCC)
PWM OUTPUT (OCB or OCD)
PLL frequency
PCLK
N1
+
()
------------------
=
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P89LPC9321FN 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 512-byte data EEPROM
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