参数资料
型号: AT89LP828-20JU
厂商: Atmel
文件页数: 19/149页
文件大小: 0K
描述: MCU 8051 8K FLASH SPI 32PLCC
产品培训模块: MCU Product Line Introduction
标准包装: 32
系列: 89LP
核心处理器: 8051
芯体尺寸: 8-位
速度: 20MHz
连通性: SPI,UART/USART
外围设备: 欠压检测/复位,POR,PWM,WDT
输入/输出数: 30
程序存储器容量: 8KB(8K x 8)
程序存储器类型: 闪存
EEPROM 大小: 1K x 8
RAM 容量: 768 x 8
电压 - 电源 (Vcc/Vdd): 2.4 V ~ 5.5 V
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 32-LCC(J 形引线)
包装: 管件
115
3654A–MICRO–8/09
AT89LP428/828
23. Programming the Flash Memory
The Atmel AT89LP428/828 microcontroller features 4K/8K bytes of on-chip In-System Program-
mable Flash program memory and 512/1024 bytes of nonvolatile Flash data memory. In-System
Programming allows programming and reprogramming of the microcontroller positioned inside
the end system. Using a simple 4-wire SPI interface, the programmer communicates serially
with the AT89LP428/828 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 soft-
ware or parameters in the field. The programming interface of the AT89LP428/828 includes the
following features:
4-wire SPI Programming Interface
Active-low Reset Entry into Programming
Slave Select Allows Multiple Devices on Same Interface
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”.
23.1
Physical Interface
Flash Programming utilizes the Serial Peripheral Interface (SPI) pins of an AT89LP428/828
microcontroller. The SPI is a full-duplex synchronous serial interface consisting of four wires:
Serial Clock (SCK), Master-in/Slave-out (MISO), Master-out/Slave-in (MOSI), and an active-low
Slave Select (SS). When programming an AT89LP428/828 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 (low). With the
addition of VCC and GND, an AT89LP428/828 microcontroller can be programmed with a mini-
mum of seven connections as shown in Figure 23-1.
Figure 23-1. In-System Programming Device Connections
AT89LP428/LP828
VCC
P3.6/RST
P1.7/SCK
P1.5/MOSI
GND
Serial Clock
Serial In
RST
P1.4/SS
P1.6/MISO
Serial Out
SS
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AT89LP828-20MH 功能描述:8位微控制器 -MCU Single Cycle 8051 8K ISP Flash 2.4V-5.5V RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
AT89LP828-20PU 功能描述:8位微控制器 -MCU Single Cycle 8051 8K ISP Flash 2.4V-5.5V RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
AT89LP828-AU 功能描述:8位微控制器 -MCU Single-Cycle 8051 8K ISP Flash, 2.4-5.5V RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
AT89LP828-JU 功能描述:8位微控制器 -MCU Single-Cycle 8051 8K ISP Flash, 2.4-5.5V RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
AT89LP828-PU 功能描述:8位微控制器 -MCU Single-Cycle 8051 8K ISP Flash, 2.4-5.5V RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT