參數(shù)資料
型號: P87LPC769
廠商: NXP Semiconductors N.V.
英文描述: Low power, low price, low pin count 20 pin microcontroller with 4 kB OTP 8-bit A/D, and DAC
中文描述: 低功耗,低價格,低引腳數(shù)20 4 KB的檢察官辦公室8引腳微控制器位A / D,和DAC
文件頁數(shù): 16/61頁
文件大?。?/td> 306K
代理商: P87LPC769
Philips Semiconductors
Preliminary specification
87LPC769
Low power, low price, low pin count (20 pin)
microcontroller with 4 kB OTP 8-bit A/D, and DAC
2001 Jan 11
13
Digital to Analog Converter (DAC) Outputs
The 87LPC769 provides a two channel, 8-bit DAC function. DAC0 is
also a part of the A/D Converter and it should not be enabled while
the A/D is active. Digital outputs must be disabled on the DAC
output pins while the corresponding DAC is enabled, as described in
the section Analog Functions.
The DACs use the power supply as the references: V
DD
as the
upper reference and V
SS
as the lower reference. The DAC output is
generated by a tap from a resistor ladder and is not buffered. The
maximum resistance to V
DD
or V
SS
from a DAC output is 10k
.
Care must be taken with the loading of the DAC outputs in order to
avoid distortion of the output voltage. DAC accuracy is affected by
noise generated on-chip and elsewhere in the application. Since the
87LPC769 power pins are used for the DAC references, the power
supply also affects the accuracy of the DAC outputs.
The ideal DAC output may be calculated as follows:
Result
(DAC Value
0.5)
V
DD
V
SS
256
where DAC value is the contents of the relevant DAC register:
DAC0 or DAC1.
SU01371
D/A CONVERTER
ENDACn
V
REF
+ = V
DD
DACn pin
V
REF
– = V
ss
ADCON
DACn
Figure 4. DAC Block Diagram
相關(guān)PDF資料
PDF描述
P87LPC769HD512 IC-SM-8-BIT MCU
P89C51RB2 80C51 8-bit Flash microcontroller family(80C51八位閃速微控制器)
P89C51RD2FA 80C51 8-bit Flash microcontroller family 16KB/32KB/64KB ISP/IAP Flash with 512B/512B/1KB RAM
P89C51RC2BA 80C51 8-bit Flash microcontroller family 16KB/32KB/64KB ISP/IAP Flash with 512B/512B/1KB RAM
P89C51RC2FP 80C51 8-bit Flash microcontroller family 16KB/32KB/64KB ISP/IAP Flash with 512B/512B/1KB RAM
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
P87LPC769HD 功能描述:8位微控制器 -MCU 80C51 4K/128 OTP ADC 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 最大時鐘頻率:50 MHz 程序存儲器大小: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
P87LPC769HD,512 功能描述:8位微控制器 -MCU 80C51 4K/128 OTP ADC 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 最大時鐘頻率:50 MHz 程序存儲器大小: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
P87LPC769HD,518 功能描述:8位微控制器 -MCU 20 PIN MCU 4KBYTE OTP 8-BIT A/D DAC 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 最大時鐘頻率:50 MHz 程序存儲器大小: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
P87LPC769HD512 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:IC-SM-8-BIT MCU
P87LPC778 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:CMOS single-chip 8-bit 80C51 microcontroller 128-byte data RAM, 8 kB OTP