参数资料
型号: TSC87251G2D-24IC
厂商: Atmel
文件页数: 35/77页
文件大小: 0K
描述: IC 8051 MCU 8BIT OTP 32K 44CQPJ
标准包装: 25
系列: 8x251
核心处理器: C251
芯体尺寸: 8/16-位
速度: 24MHz
连通性: EBI/EMI,I²C,Microwire,SPI,UART/USART
外围设备: POR,PWM,WDT
输入/输出数: 32
程序存储器容量: 32KB(32K x 8)
程序存储器类型: OTP
RAM 容量: 1K x 8
电压 - 电源 (Vcc/Vdd): 4.5 V ~ 5.5 V
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 44-CQPJ
包装: 托盘
40
AT/TSC8x251G2D
4135F–8051–11/06
Programming and Verifying Non-volatile Memory
Internal Features
The internal non-volatile memory of the TSC80251G2D derivatives contains five differ-
ent areas:
Code Memory
Configuration Bytes
Lock Bits
Encryption Array
Signature Bytes
EPROM/OTPROM Devices
All the internal non-volatile memory but the Signature Bytes of the TSC87251G2D prod-
ucts is made of EPROM cells. The Signature Bytes of the TSC87251G2D products are
made of Mask ROM.
The TSC87251G2D products are programmed and verified in the same manner as
Atmel’s TSC87251G1A, using a SINGLE-PULSE algorithm, which programs at
VPP = 12.75V using only one 100μs pulse per byte. This results in a programming time
of less than 10 seconds for the 32 kilobytes on-chip code memory.
The EPROM of the TSC87251G2D products in Window package is erasable by Ultra-
Violet radiation(1) (UV). UV erasure set all the EPROM memory cells to one and allows
reprogramming. The quartz window must be covered with an opaque label(2) when the
device is in operation. This is not so much to protect the EPROM array from inadvertent
erasure, as to protect the RAM and other on-chip logic. Allowing light to impinge on the
silicon die during device operation may cause a logical malfunction.
The TSC87251G2D products in plastic packages are One Time Programmable (OTP).
An EPROM cell cannot be reset by UV once programmed to zero.
Notes: 1. The recommended erasure procedure is exposure to ultra-violet light (at 2537 ) to
an integrated dose of at least 20 W-sec/cm2. Exposing the EPROM to an ultra-violet
lamp of 12000 μW/cm2 rating for 30 minutes should be sufficient.
2. Erasure of the EPROM begins to occur when the chip is exposed to light wavelength
shorter than 4000 . Since sunlight and fluorescent light have wavelength in this
range, exposure to these light sources over an extended time (1 week in sunlight or 3
years in room-level fluorescent lighting) could cause inadvertent erasure.
Mask ROM Devices
All the internal non-volatile memory of TSC83251G2D products is made of Mask ROM
cells. They can only be verified by the user, using the same algorithm as the
EPROM/OTPROM devices.
ROMless Devices
The TSC80251G2D products do not include on-chip Configuration Bytes, Code Memory
and Encryption Array. They only include Signature Bytes made of Mask ROM cells
which can be read using the same algorithm as the EPROM/OTPROM devices.
Security Features
In some microcontroller applications, it is desirable that the user’s program code be
secured from unauthorized access. The TSC83251G2D and TSC87251G2D offer two
kinds of protection for program code stored in the on-chip array:
Program code in the on-chip Code Memory is encrypted when read out for
verification if the Encryption Array isprogrammed.
A three-level lock bit system restricts external access to the on-chip code memory.
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TSC87251G2D-24IJ 功能描述:IC 8051 MCU 8BIT OTP 32K 40CDIL RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器, 系列:8x251 标准包装:1,500 系列:AVR® ATtiny 核心处理器:AVR 芯体尺寸:8-位 速度:16MHz 连通性:I²C,LIN,SPI,UART/USART,USI 外围设备:欠压检测/复位,POR,PWM,温度传感器,WDT 输入/输出数:16 程序存储器容量:8KB(4K x 16) 程序存储器类型:闪存 EEPROM 大小:512 x 8 RAM 容量:512 x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 5.5 V 数据转换器:A/D 11x10b 振荡器型:内部 工作温度:-40°C ~ 125°C 封装/外壳:20-SOIC(0.295",7.50mm 宽) 包装:带卷 (TR)
TSC87251G2D-L16CB 功能描述:IC MCU 8BIT 32K OTP 16MHZ 44PLCC RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器, 系列:8x251 标准包装:9 系列:87C 核心处理器:8051 芯体尺寸:8-位 速度:40/20MHz 连通性:UART/USART 外围设备:POR,WDT 输入/输出数:32 程序存储器容量:32KB(32K x 8) 程序存储器类型:OTP EEPROM 大小:- RAM 容量:256 x 8 电压 - 电源 (Vcc/Vdd):4.5 V ~ 5.5 V 数据转换器:- 振荡器型:内部 工作温度:0°C ~ 70°C 封装/外壳:40-DIP(0.600",15.24mm) 包装:管件
TSC87251G2D-L16CBR 功能描述:IC MCU 8BIT 32K OTP 16MHZ 44PLCC RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器, 系列:8x251 标准包装:1,500 系列:AVR® ATtiny 核心处理器:AVR 芯体尺寸:8-位 速度:16MHz 连通性:I²C,LIN,SPI,UART/USART,USI 外围设备:欠压检测/复位,POR,PWM,温度传感器,WDT 输入/输出数:16 程序存储器容量:8KB(4K x 16) 程序存储器类型:闪存 EEPROM 大小:512 x 8 RAM 容量:512 x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 5.5 V 数据转换器:A/D 11x10b 振荡器型:内部 工作温度:-40°C ~ 125°C 封装/外壳:20-SOIC(0.295",7.50mm 宽) 包装:带卷 (TR)
TSC87251G2D-L16CE 功能描述:IC MCU 8BIT 32K OTP 16MHZ 44VQFP RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器, 系列:8x251 标准包装:9 系列:87C 核心处理器:8051 芯体尺寸:8-位 速度:40/20MHz 连通性:UART/USART 外围设备:POR,WDT 输入/输出数:32 程序存储器容量:32KB(32K x 8) 程序存储器类型:OTP EEPROM 大小:- RAM 容量:256 x 8 电压 - 电源 (Vcc/Vdd):4.5 V ~ 5.5 V 数据转换器:- 振荡器型:内部 工作温度:0°C ~ 70°C 封装/外壳:40-DIP(0.600",15.24mm) 包装:管件
TSC87251G2D-L16CER 功能描述:IC MCU 8BIT 32K OTP 16MHZ 44VQFP RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器, 系列:8x251 标准包装:1,500 系列:AVR® ATtiny 核心处理器:AVR 芯体尺寸:8-位 速度:16MHz 连通性:I²C,LIN,SPI,UART/USART,USI 外围设备:欠压检测/复位,POR,PWM,温度传感器,WDT 输入/输出数:16 程序存储器容量:8KB(4K x 16) 程序存储器类型:闪存 EEPROM 大小:512 x 8 RAM 容量:512 x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 5.5 V 数据转换器:A/D 11x10b 振荡器型:内部 工作温度:-40°C ~ 125°C 封装/外壳:20-SOIC(0.295",7.50mm 宽) 包装:带卷 (TR)