參數(shù)資料
型號(hào): P89V660FA,512
廠商: NXP Semiconductors
文件頁(yè)數(shù): 68/90頁(yè)
文件大?。?/td> 0K
描述: IC 80C51 MCU FLASH 16K 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: 1,300
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: 16KB(16K x 8)
程序存儲(chǔ)器類型: 閃存
RAM 容量: 512 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)
配用: 622-1001-ND - USB IN-CIRCUIT PROG 80C51ISP
其它名稱: 568-2432-5
935280828512
P89V660FA
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
70 of 90
NXP Semiconductors
P89V660/662/664
80C51 with 512 B/1 kB/2 kB RAM, dual I2C-bus, SPI
6.14 System clock and clock options
6.14.1 Clock input options and recommended capacitor values for the oscillator
Shown in Figure 33 and Figure 34 are the input and output of an internal inverting
amplifier (XTAL1, XTAL2), which can be configured for use as an on-chip oscillator.
When driving the device from an external clock source, XTAL2 should be left
disconnected and XTAL1 should be driven.
At start-up, the external oscillator may encounter a higher capacitive load at XTAL1 due to
interaction between the amplifier and its feedback capacitance. However, the capacitance
will not exceed 15 pF once the external signal meets the VIL and VIH specifications.
Resonator manufacturer, supply voltage, and other factors may cause circuit performance
to differ from one application to another. C1 and C2 should be adjusted appropriately for
each design. Table 68 shows the typical values for C1 and C2 vs. resonator type for
various frequencies
6.14.2 Clock doubling option
By default, the device runs at six clocks per machine cycle. The device may be run in 12
clocks per machine cycle mode by flash programming of the 6x/12x bit.
Table 68.
Recommended values for C1 and C2 by crystal type
Resonator
C1 =C2
Quartz
20 pF to 30 pF
Ceramic
40 pF to 50 pF
Fig 33. Oscillator characteristics (using the on-chip oscillator)
Fig 34. Oscillator characteristics (external clock drive)
002aaa545
XTAL2
XTAL1
VSS
C1
C2
002aaa546
XTAL2
n.c.
XTAL1
external
oscillator
signal
VSS
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P89V662 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
P89V662FA 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
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