參數(shù)資料
型號(hào): AT89LP52-20AU
廠商: Atmel
文件頁數(shù): 95/117頁
文件大?。?/td> 0K
描述: IC MCU 8051 8K FLASH SPI 44TQFP
標(biāo)準(zhǔn)包裝: 160
系列: 89LP
核心處理器: 8051
芯體尺寸: 8-位
速度: 20MHz
連通性: EBI/EMI,I²C,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): 36
程序存儲(chǔ)器容量: 8KB(8K x 8)
程序存儲(chǔ)器類型: 閃存
RAM 容量: 256 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: 44-TQFP
包裝: 托盤
79
3709D–MICRO–12/11
AT89LP51/52
17. Programming the Flash Memory
The Atmel AT89LP51/52 microcontroller features 8K bytes of on-chip In-System Programmable
Flash program memory and 256bytes of nonvolatile Flash data memory. In-System Program-
ming allows programming and reprogramming of the microcontroller positioned inside the end
system. Using a simple 3-wire SPI interface, the programmer communicates serially with the
AT89LP51/52 microcontroller, reprogramming all nonvolatile memories on the chip. In-System
Programming eliminates the need for physical removal of the chips from the system. This will
save time and money, both during development in the lab, and when updating the software or
parameters in the field. The programming interface of the AT89LP51/52 includes the following
features:
Three-wire serial SPI Programming Interface or 11-pin Parallel Interface
Selectable Polarity Reset Entry into Programming
User Signature Array
Flexible Page Programming
Row Erase Capability
Page Write with Auto-Erase Commands
Programming Status Register
For more detailed information on In-System Programming, refer to the Application Note entitled
“AT89LP In-System Programming Specification”.
17.1
Physical Interface
The AT89LP51/52 provides a standard programming command set with two physical interfaces:
a bit-serial and a byte-parallel interface. Normal Flash programming utilizes the Serial Peripheral
Interface (SPI) pins of an AT89LP51/52 microcontroller. The SPI is a full-duplex synchronous
serial interface consisting of three wires: Serial Clock (SCK), Master-In/Slave-out (MISO), and
Master-out/Slave-in (MOSI)). When programming an AT89LP51/52 device, the programmer
always operates as the SPI master, and the target system always operates as the SPI slave. To
enter or remain in Programming mode the device’s reset line (RST) must be held active. With
the addition of VDD and GND, an AT89LP51/52 microcontroller can be programmed with a min-
imum of seven connections as shown in Figure 17-1.
Figure 17-1. In-System Programming Device Connections
AT89LP51/52
VDD
RST
P1.7/SCK
P1.5/MOSI
GND
Serial Clock
Serial In
RST
POL
P1.6/MISO
Serial Out
GND or VDD
相關(guān)PDF資料
PDF描述
AT89LP52-20PU IC MCU 8051 8K FLASH SPI 40PDIP
ATMEGA48PA-MMN MCU AVR 4KB FLASH 20MHZ 28QFN
ATMEGA48PA-PN MCU AVR 4KB FLASH 20MHZ 28PDIP
AT89LS51-16PU IC MCU 4K FLASH 16MHZ 40-DIP
516-230-156 CONN COVER PLASTIC 56POS SIDE
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AT89LP52-20JU 功能描述:8位微控制器 -MCU Single-Cycle 8051 8K ISP Flash MCU 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
AT89LP52-20MU 功能描述:8位微控制器 -MCU Single-Cycle 8051 8K ISP Flash MCU 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
AT89LP52-20PU 功能描述:8位微控制器 -MCU Single-Cycle 8051 8K ISP Flash MCU 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
AT89LP6440-20AU 功能描述:8位微控制器 -MCU Single-Cycle 8051 64K ISP Flash 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
AT89LP6440-20JU 功能描述:8位微控制器 -MCU Single-Cycle 8051 64K ISP Flash 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