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| 型号： | DS87C550-QCL+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 24/49页 |
| 文件大小： | 0K |
| 描述： | IC MCU EPROM ADC/PWM HS 68-PLCC |
| 标准包装： | 18 |
| 系列： | 87C |
| 核心处理器： | 8051 |
| 芯体尺寸： | 8-位 |
| 速度： | 33MHz |
| 连通性： | EBI/EMI，SIO，UART/USART |
| 外围设备： | 电源故障复位，PWM，WDT |
| 输入/输出数： | 55 |
| 程序存储器容量： | 8KB（8K x 8） |
| 程序存储器类型： | OTP |
| RAM 容量： | 1K x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 4.5 V ~ 5.5 V |
| 数据转换器： | A/D 6x10b |
| 振荡器型： | 外部 |
| 工作温度： | 0°C ~ 70°C |
| 封装/外壳： | 68-LCC（J 形引线） |
| 包装： | 管件 |
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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.
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相关代理商/技术参数 |
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| DS87C550-QCL+ | 功能描述:IC MCU EPROM ADC/PWM HS 68-PLCC RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:87C 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:260 系列:73S12xx 核心处理器:80515 芯体尺寸:8-位 速度:24MHz 连通性:I²C，智能卡，UART/USART，USB 外围设备:LED，POR，WDT 输入/输出数:9 程序存储器容量:64KB（64K x 8） 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:2K x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 5.5 V 数据转换器:- 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:68-VFQFN 裸露焊盘 包装:管件 |
| DS87C550-QCW | 制造商:Maxim Integrated Products 功能描述:DS87C550 WAIVERED FOR LS & MARKING - Rail/Tube |
| DS87C550-QNL | 功能描述:IC MCU EPROM ADC/PWM HS 68-PLCC RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:87C 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:260 系列:73S12xx 核心处理器:80515 芯体尺寸:8-位 速度:24MHz 连通性:I²C，智能卡，UART/USART，USB 外围设备:LED，POR，WDT 输入/输出数:9 程序存储器容量:64KB（64K x 8） 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:2K x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 5.5 V 数据转换器:- 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:68-VFQFN 裸露焊盘 包装:管件 |
| DS88 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog IC |
| DS8800 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Dual Voltage Level Translator |
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