參數(shù)資料
型號： AT89LP428-20PU
廠商： Atmel
文件頁數(shù)： 74/149頁
文件大?。?/td> 0K
描述： MCU 8051 4K FLASH SPI 28PDIP
產(chǎn)品培訓(xùn)模塊： MCU Product Line Introduction
標(biāo)準(zhǔn)包裝： 14
系列： 89LP
核心處理器： 8051
芯體尺寸： 8-位
速度： 20MHz
連通性： SPI，UART/USART
外圍設(shè)備： 欠壓檢測/復(fù)位，POR，PWM，WDT
輸入/輸出數(shù)： 30
程序存儲器容量： 4KB（4K x 8）
程序存儲器類型： 閃存
EEPROM 大?。?/td> 512 x 8
RAM 容量： 768 x 8
電壓 - 電源 (Vcc/Vdd)： 2.4 V ~ 5.5 V
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 85°C
封裝/外殼： 28-DIP（0.300"，7.62mm）
包裝： 管件
30
3654A–MICRO–8/09
AT89LP428/828
The Timer 0 and Timer 1 Interrupts are generated by TF0 and TF1, which are set by a rollover in
their respective Timer/Counter registers (except for Timer 0 in Mode 3). When a timer interrupt is
generated, the on-chip hardware clears the flag that generated it when the service routine is
vectored to. The Timer 2 Interrupt is generated by a logic OR of bits TF2 and EXF2 in register
T2CON. Neither of these flags is cleared by hardware when the CPU vectors to the service rou-
tine. The service routine normally must determine whether TF2 or EXF2 generated the interrupt
and that bit must be cleared by software.
The Serial Port Interrupt is generated by the logic OR of RI and TI in SCON. Neither of these
flags is cleared by hardware when the CPU vectors to the service routine. The service routine
normally must determine whether RI or TI generated the interrupt and that bit must be cleared by
software. The Serial Peripheral Interface Interrupt is generated by the logic OR of SPIF, MODF
and TXE in SPSR. None of these flags is cleared by hardware when the CPU vectors to the ser-
vice routine. The service routine normally must determine which bit generated the interrupt and
that bit must be cleared by software.
A logic OR of all eight flags in the GPIF register causes the GPI. None of these flags is cleared
by hardware when the service routine is vectored to. The service routine must determine which
bit generated the interrupt and that bit must be cleared in software. If the interrupt was level acti-
vated, then the external requesting source must de-assert the interrupt before the flag may be
cleared by software.
The CFA and CFB bits in ACSRA and ACSRB respectively generate the Comparator Interrupt.
The service routine must normally determine whether CFA or CFB generated the interrupt, and
the bit must be cleared by software.
A logic OR of the four least significant bits in the T2CCF register causes the Compare/Capture
Array Interrupt. None of these flags is cleared by hardware when the service routine is vectored
to. The service routine must determine which bit generated the interrupt and that bit must be
cleared in software.
All of the bits that generate interrupts can be set or cleared by software, with the same result as
though they had been set or cleared by hardware. That is, interrupts can be generated and
pending interrupts can be canceled in software.
Table 9-1.
Interrupt Vector Addresses
Interrupt
Source
Vector Address
System Reset
RST or POR or BOD
0000H
External Interrupt 0
IE0
0003H
Timer 0 Overflow
TF0
000BH
External Interrupt 1
IE1
0013H
Timer 1 Overflow
TF1
001BH
Serial Port Interrupt
RI or TI
0023H
Timer 2 Interrupt
TF2 or EXF2
002BH
Analog Comparator Interrupt
CFA or CFB
0033H
General-purpose Interrupt
GPIF7-0
003BH
Compare/Capture Array Interrupt
T2CCF
3-0
0043H
Serial Peripheral Interface Interrupt
SPIF or MODF or TXE
004BH
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AT89LP51-20AU 功能描述:8位微控制器 -MCU Single Cycle 8051 4K ISP FL 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 最大時鐘頻率:50 MHz 程序存儲器大小: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
AT89LP51-20JU 功能描述:8位微控制器 -MCU Single Cycle 8051 4K ISP FL 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 最大時鐘頻率:50 MHz 程序存儲器大小: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
AT89LP51-20MU 功能描述:8位微控制器 -MCU Single Cycle 8051 4K ISP FL 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 最大時鐘頻率:50 MHz 程序存儲器大小: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
AT89LP51-20PU 功能描述:8位微控制器 -MCU Single Cycle 8051 4K ISP FL 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 最大時鐘頻率:50 MHz 程序存儲器大小: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
AT89LP51ED2-20AAU 功能描述:8位微控制器 -MCU 64KB 20MHz 2.4V-5.5V 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 最大時鐘頻率:50 MHz 程序存儲器大小: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
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