參數(shù)資料
型號: AT89LP428-20JU
廠商: Atmel
文件頁數(shù): 18/149頁
文件大小: 0K
描述: MCU 8051 4K FLASH SPI 32PLCC
產(chǎn)品培訓(xùn)模塊: MCU Product Line Introduction
標準包裝: 32
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: 32-LCC(J 形引線)
包裝: 管件
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
ATMEGA48V-10MU IC AVR MCU 4K 10MHZ 1.8V 32-QFN
ATMEGA48-20MU IC AVR MCU 4K 20MHZ 5V 32-QFN
ATMEGA48V-10AU IC AVR MCU 4K 10MHZ 1.8V 32TQFP
ATMEGA48-20AU IC AVR MCU 4K 20MHZ 5V 32TQFP
ATTINY2313-20MU IC MCU AVR 2K FLASH 20-QFN
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AT89LP428-20MH 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
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
AT89LP51-20AU 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