- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄367732 > P87C055 (NXP Semiconductors N.V.) Microcontrollers for TV and video MTV PDF資料下載
參數(shù)資料
| 型號： | P87C055 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Microcontrollers for TV and video MTV |
| 中文描述： | 電視和視頻微控制器MTV |
| 文件頁數(shù)： | 14/40頁 |
| 文件大?。?/td> | 243K |
| 代理商： | P87C055 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁當前第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁
1996 Mar 22
14
Philips Semiconductors
Product specification
Microcontrollers for TV and video (MTV)
83C145; 83C845
83C055; 87C055
12 SOFTWARE ANALOG-TO-DIGITAL FACILITY
Figure 6 shows the software analog-to-digital facility block diagram. The block includes Special Function Register SAD.
12.1
Special Function Register SAD
Table 12
Special Function Register SAD format (address D8H)
Table 13
Description of SAD bits
7
6
5
4
3
2
1
0
VHi
CH1
CH0
St
SAD3
SAD2
SAD1
SAD0
BIT
SYMBOL
DESCRIPTION
7
6
5
4
VHi
CH1
CH0
St
The comparator output bit; bit addressable.
The channel field controls which pin, if any, is connected to this facility; see Table 14.
The St bit should be written as a logic 1 in order to initiate a voltage comparison.
SAD3 to SAD0 4 LSBs of the SAD register.
3 to 0
12.2
Software ADC operation
Port pins P1.0/ADI0 to P1.2/ADI2 can be alternately
selected as inputs of a linear voltage comparator. The
other input of the comparator is connected to a 4-bit DAC.
This DAC is controlled by bits SAD3 to SAD0 and
produces a reference voltage:
nominally 0.15625 to 4.84375 V in increments of
0.3125 V.
The output of the comparator (HIGH or LOW) can be read
by the program as the MSB of the SAD register i.e. bit VHi.
After writing St = 1, the program should include intervening
instructions totalling at least 6 machine cycles (72 clock
periods or 6
μ
s at 12 MHz), before the instruction that
accesses and tests VHi.
Table 14
Pin selection: P1.n/ADIn
Note
1.
Port 1 has open-drain drivers which will not materially
affect an analog voltage as long as any and all pins
used for software analog-to-digital measurement have
corresponding logic 1s in the port register; n = 0, 1, 2.
CH1
CH0
P1.n/ADIn
(1)
0
0
1
1
0
1
0
1
none
P1.0/ADI0
P1.1/ADI1
P1.2/ADI2
相關PDF資料 |
PDF描述 |
|---|---|
| P87C055BBP | Microcontrollers for TV and video MTV |
| P83C055BBP | Microcontrollers for TV and video MTV |
| P83C145BBP | MICRO 21 F SOD |
| P83C851FBA | CMOS single-chip 8-bit microcontroller with on-chip EEPROM |
| P80C851IBA | CMOS single-chip 8-bit microcontroller with on-chip EEPROM |
相關代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| P87C055BBNB | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Microcontroller |
| P87C055BBP | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Microcontrollers for TV and video MTV |
| P87C151SA | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:HIGH-PERFORMANCE CHMOS MICROCONTROLLER |
| P87C151SB | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:HIGH-PERFORMANCE CHMOS MICROCONTROLLER |
| P87C251SA16 | 功能描述:IC MCU 8-BIT 8K 16MHZ OTP 40-DIP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:87C 其它有關文件:STM32F101T8 View All Specifications 特色產(chǎn)品:STM32 32-bit Cortex MCUs 標準包裝:490 系列:STM32 F1 核心處理器:ARM? Cortex?-M3 芯體尺寸:32-位 速度:36MHz 連通性:I²C，IrDA，LIN，SPI，UART/USART 外圍設備:DMA，PDR，POR，PVD，PWM，溫度傳感器，WDT 輸入/輸出數(shù):26 程序存儲器容量:64KB（64K x 8） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:10K x 8 電壓 - 電源 (Vcc/Vdd):2 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 10x12b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:36-VFQFN，36-VFQFPN 包裝:托盤 配用:497-10030-ND - STARTER KIT FOR STM32497-8853-ND - BOARD DEMO STM32 UNIV USB-UUSCIKSDKSTM32-PL-ND - KIT IAR KICKSTART STM32 CORTEXM3497-8512-ND - KIT STARTER FOR STM32F10XE MCU497-8505-ND - KIT STARTER FOR STM32F10XE MCU497-8304-ND - KIT STM32 MOTOR DRIVER BLDC497-6438-ND - BOARD EVALUTION FOR STM32 512K497-6289-ND - KIT PERFORMANCE STICK FOR STM32MCBSTM32UME-ND - BOARD EVAL MCBSTM32 + ULINK-MEMCBSTM32U-ND - BOARD EVAL MCBSTM32 + ULINK2更多... 其它名稱:497-9032STM32F101T8U6-ND |
發(fā)布緊急采購，3分鐘左右您將得到回復。