- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄3784 > DS87C550-QNL (Maxim Integrated Products)IC MCU EPROM ADC/PWM HS 68-PLCC PDF資料下載
參數(shù)資料
| 型號： | DS87C550-QNL |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 24/49頁 |
| 文件大小： | 0K |
| 描述： | IC MCU EPROM ADC/PWM HS 68-PLCC |
| 標準包裝： | 18 |
| 系列： | 87C |
| 核心處理器： | 8051 |
| 芯體尺寸： | 8-位 |
| 速度： | 33MHz |
| 連通性： | EBI/EMI，SIO，UART/USART |
| 外圍設備： | 電源故障復位，PWM，WDT |
| 輸入/輸出數(shù)： | 55 |
| 程序存儲器容量： | 8KB（8K x 8） |
| 程序存儲器類型： | OTP |
| RAM 容量： | 1K x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 4.5 V ~ 5.5 V |
| 數(shù)據(jù)轉換器： | A/D 6x10b |
| 振蕩器型： | 外部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 68-LCC（J 形引線） |
| 包裝： | 管件 |
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頁當前第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頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁
DS87C550 EPROM High-Speed Microcontroller with ADC and PWM
30 of 49
The three available priority levels are low, high, and highest. The highest priority level is reserved for the
Power-Fail Interrupt only. All other interrupt priority levels have individual priority bits that when set to a
1 establish the particular interrupt as high priority. In addition to the user selectable priorities, each
interrupt also has an inherent or “natural priority”. Given that all interrupt sources maintain the default
low priority, the natural priority determines the priority of simultaneously occurring interrupts. Table 9
identifies the available interrupt sources and their flags, enables, natural priority, and available priority
selection bits.
INTERRUPT SOURCES AND PRIORITIES Table 9
NAME
DESCRIPTION
VECTOR
NATURAL
PRIORITY
FLAG
BIT
ENABLE
BIT
PRIORITY
CONTROL BIT
PFI
Power Fail Interrupt
33h
0
PFI(WDCON.4)
EPFI(WDCON.5)
N/A
INT0
External Interrupt 0
03h
1
IEO(TCON.1)
EX0(IE.0)
PX0(IP.0)
SCON1
TI1 or RI1 from serial
port 1
0Bh
2
RI_1(SCON1.0)
TI_1(SCON1.1)
ES1(IE.5)
PS1(IP.5)
A/D
A/D Converter
Interrupt
13h
3
EOC(ADCON1.6)
EAD(IE.6)
PAD(IP.6)
TF0
Timer 0
1Bh
4
TF0(TCON.5)
ET0(IE.1)
PT0(IP.1)
INT2/CF0
External Interrupt 2 or
Capture 0
23h
5
IE2/CF0(T2IR.0)
EX2/EC0(EIE.0)1
PX2/PC0(EIP.0)
CM0F
Compare Match 0
2Bh
6
CM0F(T2IR.4)
ECM0(EIE.4)
PCM0(EIP.4)
INT1
External Interrupt 1
3Bh
7
IE1(TCON.3)
EX1(IE.2)
PX1(IP.2)
INT3/CF1
External Interrupt 3 or
Capture 1
43h
8
IE3/CF1(T2IR.1)
EX3/EC1(EIE.1) 1
PX3/PC1(EIP.1)
CM1F
Compare Match 1
4Bh
9
CM1F(T2IR.5)
ECM1(EIE.5)
PCM1(EIP.5)
TF1
Timer 1
53h
10
TF1(TCON.7)
ET1(IE.3)
PT1(IP.3)
INT4/CF2
External Interrupt 4 or
Capture 2
5Bh
11
IE4/CF2(T2IR.2)
EX4/EC2(EIE.2) 1
PX4/PC2(EIP.2)
CM2F
Compare Match 2
63h
12
CM2F(T2IR.6)
ECM2(EIE.6)
PCM2(EIP.6)
SCON0
TI0 or RI0 from serial
port 0
6Bh
13
RI_0(SCON0.0)
TI_0(SCON0.1)
ES0(IE.4)
PS0(IP.4)
INT5/CF3
External Interrupt 5 or
Capture 3
73h
14
IE5/CF3(T2IR.3)
EX5/EC3(EIE.3) 1
PX5/PC3(EIP.3)
TF2
Timer 2
7Bh
15
TF2(TCON.7)
TF2B(T2SEL.4)
ET2(EIE.7)
PT2(EIP.7)
1 External interrupts 2/3/4/5 also require the appropriate bits in the CTCON register to be configured before the interrupt is
fully enabled.
EPROM PROGRAMMING
The DS87C550 follows 8kB EPROM standards for the 8051 family. It is available in a UV erasable,
ceramic windowed package and in plastic packages for one-time user-programmable versions. The part
has unique signature information so programmers can support its specific EPROM options.
PROGRAMMING PROCEDURE
The DS87C550 should run from a clock speed between 4 and 6MHz when programmed. The
programming fixture should apply address information for each byte to the address lines and the data
value to the data lines. The control signals must be manipulated as shown in Table 10. The diagram in
Figure 5 shows the expected electrical connection for programming. Note that the programmer must
apply addresses in demultiplexed fashion to Ports 1 and 2 with data on Port 0. Waveforms and timing are
provided in the Electrical Specifications.
相關PDF資料 |
PDF描述 |
|---|---|
| MC908LK24CPBE | IC MCU 8BIT 64-LQFP |
| 1588908-1 | JR FRRL KIT, PC 126 SEALED |
| 1278530-1 | RETAINING CLIP, 1X4 BACKPLANE |
| 1544551-1 | CONNECTOR 5V 6.35 |
| 492578-1 | DUST COVER,DAUGHTER CARD HSG |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| DS88 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| DS8800 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Dual Voltage Level Translator |
| DS8800H | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Dual Voltage Level Translator |
| DS8800H/A+ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:TTL-to-MOS Translator |
| DS8802J/A+ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:MOS-to-TTL Translator |
發(fā)布緊急采購，3分鐘左右您將得到回復。