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| 型號(hào)： | P87C52SBBB,557 |
| 廠商： | NXP Semiconductors |
| 文件頁(yè)數(shù)： | 10/38頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC 80C51 MCU 8K OTP 44-PQFP |
| 產(chǎn)品培訓(xùn)模塊： | Migrating from 8/16-Bit MCUs to 32-Bit ARMs |
| 標(biāo)準(zhǔn)包裝： | 480 |
| 系列： | 87C |
| 核心處理器： | 8051 |
| 芯體尺寸： | 8-位 |
| 速度： | 16MHz |
| 連通性： | EBI/EMI，UART/USART |
| 外圍設(shè)備： | POR |
| 輸入/輸出數(shù)： | 32 |
| 程序存儲(chǔ)器容量： | 8KB（8K x 8） |
| 程序存儲(chǔ)器類型： | OTP |
| RAM 容量： | 256 x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 2.7 V ~ 5.5 V |
| 振蕩器型： | 內(nèi)部 |
| 工作溫度： | 0°C ~ 70°C |
| 封裝/外殼： | 44-QFP |
| 包裝： | 托盤 |
| 產(chǎn)品目錄頁(yè)面： | 705 (CN2011-ZH PDF) |
| 其它名稱： | 568-1248 935252880557 P87C52SBBB |
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Philips Semiconductors
Product specification
80C51/87C51/80C52/87C52
80C51 8-bit microcontroller family
4 K/8 K OTP/ROM low voltage (2.7 V–5.5 V),
low power, high speed (33 MHz), 128/256 B RAM
2000 Aug 07
18
Interrupt Priority Structure
The 80C51/87C51 and 80C52/87C52 have a 6-source four-level
interrupt structure. They are the IE, IP and IPH. (See Figures 10, 11,
and 12.) The IPH (Interrupt Priority High) register that makes the
four-level interrupt structure possible. The IPH is located at SFR
address B7H. The structure of the IPH register and a description of
its bits is shown in Figure 12.
The function of the IPH SFR is simple and when combined with the
IP SFR determines the priority of each interrupt. The priority of each
interrupt is determined as shown in the following table:
PRIORITY BITS
INTERRUPT PRIORITY LEVEL
IPH.x
IP.x
INTERRUPT PRIORITY LEVEL
0
Level 0 (lowest priority)
0
1
Level 1
1
0
Level 2
1
Level 3 (highest priority)
An interrupt will be serviced as long as an interrupt of equal or
higher priority is not already being serviced. If an interrupt of equal
or higher level priority is being serviced, the new interrupt will wait
until it is finished before being serviced. If a lower priority level
interrupt is being serviced, it will be stopped and the new interrupt
serviced. When the new interrupt is finished, the lower priority level
interrupt that was stopped will be completed.
Table 7.
Interrupt Table
SOURCE
POLLING PRIORITY
REQUEST BITS
HARDWARE CLEAR?
VECTOR ADDRESS
X0
1
IE0
N (L)1
Y (T)2
03H
T0
2
TP0
Y
0BH
X1
3
IE1
N (L)
Y (T)
13H
T1
4
TF1
Y
1BH
SP
5
RI, TI
N
23H
T2
6
TF2, EXF2
N
2BH
NOTES:
1. L = Level activated
2. T = Transition activated
EX0
IE (0A8H)
Enable Bit = 1 enables the interrupt.
Enable Bit = 0 disables it.
BIT
SYMBOL
FUNCTION
IE.7
EA
Global disable bit. If EA = 0, all interrupts are disabled. If EA = 1, each interrupt can be individually
enabled or disabled by setting or clearing its enable bit.
IE.6
—
Not implemented. Reserved for future use.
IE.5
ET2
Timer 2 interrupt enable bit.
IE.4
ES
Serial Port interrupt enable bit.
IE.3
ET1
Timer 1 interrupt enable bit.
IE.2
EX1
External interrupt 1 enable bit.
IE.1
ET0
Timer 0 interrupt enable bit.
IE.0
EX0
External interrupt 0 enable bit.
SU00571
ET0
EX1
ET1
ES
ET2
—
EA
0
1
2
3
4
5
6
7
Figure 10. IE Registers
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參數(shù)描述 |
|---|---|
| P87C52SBBB-S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| P87C52SBPN | 制造商:NXP Semiconductors 功能描述: 制造商:NXP Semiconductors 功能描述:MCU 8-Bit 87C 80C51 CISC 8KB EPROM 3.3V/5V 40-Pin PDIP 制造商:NXP Semiconductors 功能描述:IC 8BIT CPU 87C52 DIP40 制造商:NXP Semiconductors 功能描述:IC, 8BIT CPU, 87C52, DIP40 制造商:NXP Semiconductors 功能描述:IC, 8BIT CPU, 87C52, DIP40, Controller Family/Series:(8051) 8052, Core Size:8bit 制造商:NXP Semiconductors 功能描述:IC, 8BIT MCU, 80C51, 16MHZ, 40-DIP, Controller Family/Series:(8051) 8052, Core Size:8bit, No. of I/O's:32, Supply Voltage Min:2.7V, Supply Voltage Max:5.5V, Digital IC Case Style:DIP, No. of Pins:40, Program Memory Size:8KB, MSL:- , RoHS Compliant: Yes |
| P87C52SBPN,112 | 功能描述:8位微控制器 -MCU 80C51 8K/256 OTP 16MHZ 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(shí)鐘頻率:50 MHz 程序存儲(chǔ)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 |
| P87C52SBPN112 | 制造商:NXP Semiconductors 功能描述:IC 8BIT MCU 80C51 16MHZ DIP-40 |
| P87C52SFAA | 制造商:NXP Semiconductors 功能描述: |
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