參數(shù)資料
型號(hào)： AT89LP428-20MH
廠商： Atmel
文件頁數(shù)： 18/149頁
文件大?。?/td> 0K
描述： MCU 8051 4K FLASH SPI 32VQFN
產(chǎn)品培訓(xùn)模塊： MCU Product Line Introduction
標(biāo)準(zhǔn)包裝： 490
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(cè)/復(fù)位，POR，PWM，WDT
輸入/輸出數(shù)： 30
程序存儲(chǔ)器容量： 4KB（4K x 8）
程序存儲(chǔ)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： 32-VFQFN 裸露焊盤
包裝： 托盤
114
3654A–MICRO–8/09
AT89LP428/828
Figure 22-1. AT89LP428/828 On-chip Debug Connections
22.2
Software Breakpoints
The AT89LP428/828 microcontroller includes a BREAK instruction for implementing program
memory breakpoints in software. A software breakpoint can be inserted manually by placing the
BREAK instruction in the program code. Some emulator systems may allow for automatic inser-
tion/deletion of software breakpoints. The Flash memory must be re-programmed each time a
software breakpoint is changed. Frequent insertions/deletions of software breakpoints will
reduce the endurance of the nonvolatile memory. Devices used for debugging purposes should
not be shipped to end customers. The BREAK instruction is treated as a two-cycle NOP when
OCD is disabled.
22.3
Limitations of On-chip Debug
The AT89LP428/828 is a fully-featured microcontroller that multiplexes several functions on its
limited I/O pins. Some device functionality must be sacrificed to provide resources for On-chip
Debugging. The On-chip Debug System has the following limitations:
The Debug Clock pin (DCL) is physically located on that same pin as Port Pin P3.6 and the
External Reset (RST). Therefore, neither P3.6 nor an external reset source may be emulated
when OCD is enabled.
When using the Internal RC Oscillator during debug, DDA is located on the XTAL1/P4.0 pin.
The P4.0 I/O function cannot be emulated in this mode.
When using the External Clock during debug, DDA is located on the XTAL2/P4.1 pin and the
system clock drives XTAL1/P4.0. The P4.1 I/O and CLKOUT functions cannot be emulated in
this mode.
When using the Crystal Oscillator during debug, DDA is located on the P3.7 pin and the
crystal connects to XTAL1/P4.0 and XTAL2/P4.1. The P3.6 I/O function cannot be emulated
in this mode.
CLK = Internal RC
VCC
XTAL1
P3.6/RST
GND
DCL
DDA
CLK = External Clock
VCC
XTAL2
P3.6/RST
GND
DCL
DDA
XTAL1
CLK
CLK = Crystal Oscillator
VCC
P3.7
P3.6/RST
GND
DCL
DDA
XTAL1
XTAL2
AB
C
相關(guān)PDF資料
PDF描述
516-020-000-202 CONN RCPT 20POS RACK & PANEL
516-020-000-402 CONN RACK & PANEL RCPT 20POS
AT91SAM7XC256B-CU-999 IC MCU ARM7 256KB FLASH 100TFBGA
AT91SAM7XC256B-AU-999 IC MCU ARM7 256KB FLASH 100LQFP
AT91SAM7XC128B-CU-999 IC MCU ARM7 128KB FLASH 100TFBGA
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AT89LP428-20PU 功能描述:8位微控制器 -MCU SingleCycle 8051 4K ISP Flash 2.4V 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
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(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
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(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
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(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
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(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
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購

我的聯(lián)系方式

*
*
*