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參數(shù)資料
| 型號： | SAA5497 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | INNOLINE: Rxx-100_150A - Compact High Voltage Power Supplies - 5 Watt in Low Profile DIP24 Package - 3000VDC Isolation - Remote Voltage Programming by External Voltage or Resistance - Continuous Short Circuit Protection - Cascadeable to generate Output Voltages of up to 420VDC |
| 中文描述： | 經(jīng)濟圖文電視和電視微控制器 |
| 文件頁數(shù)： | 13/68頁 |
| 文件大?。?/td> | 612K |
| 代理商： | SAA5497 |
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1997 Jul 07
13
Philips Semiconductors
Preliminary specification
Economy teletext and TV microcontrollers
SAA5x9x family
7.3.7
S
OFTWARE
ADC
Up to 4 successive approximation ADCs can be
implemented in software by making use of the on-chip 8-bit
DAC and multiplexed voltage comparator. The software
ADC uses 4 analog inputs which are multiplexed with
P3.0 to P3.3.
Table 9
ADC input channel selection
The control of the ADC is achieved using the Special
Function Registers SAD and SADB.
SAD.CH1 and SAD.CH0 select one of the four inputs to
pass to the comparator. The other comparator input
comes from the DAC, whose value is set by SAD.SAD7
(MSB) to SAD.SAD4 and SADB.SAD3 to SADB.SAD0
(LSB). The setting of the value SAD.SAD7 to SAD.SAD4
CH1
CH0
INPUT PIN
0
0
1
1
0
1
0
1
P3.3/ADC3
P3.0/ADC0
P3.1/ADC1
P3.2/ADC2
must be performed at least 1 instruction cycle before the
setting of SAD.ST to ensure comparison is made using the
correct SAD.SAD7 to SAD.SAD4 value.
The output of the comparator is SAD.VHI, and is valid after
1 instruction cycle following the setting of SAD.ST to a
logic 1.
handbook, halfpage
MULTIPLEXER
P3.1
VH1
MGL115
P3.2
P3.3
CH1, CH0
SAD7 to SAD0
REF
+
REF
1D
ST
C1
8-BIT DAC
Fig.4 SAD block diagram.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SAA5291 | RES 1.15K OHM 1/16W .5% 0603 SMD |
| SAA5291A | Economy teletext and TV microcontrollers |
| SAA5291AH | Economy teletext and TV microcontrollers |
| SAA5291H | Economy teletext and TV microcontrollers |
| SAA5296 | Economy teletext and TV microcontrollers |
相關(guān)代理商/技術(shù)參數(shù) |
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| SAA5497H | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Economy teletext and TV microcontrollers |
| SAA5497PS | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Economy teletext and TV microcontrollers |
| SAA5500PS | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Standard TV Microcontrollers with On-Screen Display(OSD) |
| SAA5501PS | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Standard TV Microcontrollers with On-Screen Display(OSD) |
| SAA5502PS | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Standard TV Microcontrollers with On-Screen Display(OSD) |
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