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參數資料
型號: ADUC824
廠商: Analog Devices, Inc.
元件分類: 串行ADC
英文描述: MicroConverter, Dual-Channel 16-/24-Bit ADCs with Embedded FLASH MCU
中文描述: MicroConverter的,雙通道ADC的16-/24-Bit與嵌入式閃存MCU
文件頁數: 38/68頁
文件大小: 1060K
代理商: ADUC824
REV. B
ADuC824
–38–
Endurance quantifies the ability of the Flash/EE memory to be
cycled through many Program, Read, and Erase cycles. In real
terms, a single endurance cycle is composed of four independent,
sequential events. These events are defined as:
a. initial page erase sequence
b. read/verify sequence
c. byte program sequence
d. second read/verify sequence
In reliability qualification, every byte in both the program and
data Flash/EE memory is cycled from 00 hex to FFhex until a
first fail is recorded signifying the endurance limit of the on-chip
Flash/EE memory.
As indicated in the specification pages of this data sheet, the
ADuC824 Flash/EE Memory Endurance qualification has been
carried out in accordance with JEDEC Specification A117 over
the industrial temperature range of –40
°
C, +25
°
C, and +85
°
C.
The results allow the specification of a minimum endurance figure
over supply and temperature of 100,000 cycles, with an endurance
figure of 700,000 cycles being typical of operation at 25
°
C.
Retention quantifies the ability of the Flash/EE memory to retain
its programmed data over time. Again, the ADuC824 has been
qualified in accordance with the formal JEDEC Retention Life-
time Specification (A117) at a specific junction temperature
(T
J
= 55
°
C). As part of this qualification procedure, the Flash/EE
memory is cycled to its specified endurance limit described above,
before data retention is characterized. This means that the Flash/
EE memory is guaranteed to retain its data for its full specified
retention lifetime every time the Flash/EE memory is repro-
grammed. It should also be noted that retention lifetime, based
on an activation energy of 0.6 eV, will derate with T
J
as shown
in Figure 27.
A single Flash/EE
Memory
Endurance Cycle
40
60
70
90
T
J
JUNCTION TEMPERATURE
C
R
250
200
150
100
50
0
50
80
110
300
100
A100 YEARS MIN.
AT T
J
= 55 C
Figure 27. Flash/EE Memory Data Retention
Using the Flash/EE Program Memory
The 8 Kbyte Flash/EE Program Memory array is mapped
into the lower 8 Kbytes of the 64 Kbytes program space
addressable by the ADuC824, and is used to hold user code
in typical applications.
The program memory Flash/EE memory arrays can be pro-
grammed in one of two modes, namely:
Serial Downloading (In-Circuit Programming)
As part of its factory boot code, the ADuC824 facilitates serial
code download via the standard UART serial port. Serial down-
load mode is automatically entered on power-up if the external
pin,
PSEN
, is pulled low through an external resistor as shown
in Figure 28. Once in this mode, the user can download code to
the program memory array while the device is sited in its target
application hardware. A PC serial download executable is pro-
vided as part of the ADuC824 QuickStart development system.
The Serial Download protocol is detailed in a MicroConverter
Applications Note uC004 available from the ADI MicroConverter
www.analog.com/microconverter.
相關PDF資料
PDF描述
ADUC824BS MicroConverter, Dual-Channel 16-/24-Bit ADCs with Embedded FLASH MCU
ADUC831 LJT 6C 6#22D PIN RECP
ADUC831BCP Circular Connector; No. of Contacts:6; Series:LJT07R; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:9; Circular Contact Gender:Socket; Circular Shell Style:Jam Nut Receptacle; Insert Arrangement:9-35
ADUC831BS MicroConverter, 12-Bit ADCs and DACs with Embedded 62 kBytes Flash MCU
ADUC836 MicroConverter, Dual 16-Bit-ADCs with Embedded 62 kB Flash MCU
相關代理商/技術參數
參數描述
ADUC824BCP 制造商:Analog Devices 功能描述:MCU 8-Bit ADuC8xx 8052 CISC 8KB Flash 3.3V/5V 56-Pin LFCSP EP 制造商:Rochester Electronics LLC 功能描述:8BIT CISC 8KB FLASH 12.58MHZ 3.3/5V 56LFCSP - Bulk
ADUC824BCP-REEL 制造商:Analog Devices 功能描述:MCU 8-Bit ADuC8xx 8052 CISC 8KB Flash 3.3V/5V 56-Pin LFCSP EP T/R
ADUC824BCPZ 功能描述:IC MCU 8K FLASH ADC/DAC 56LFCSP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:MicroConverter® ADuC8xx 標準包裝:38 系列:Encore!® XP® 核心處理器:eZ8 芯體尺寸:8-位 速度:5MHz 連通性:IrDA,UART/USART 外圍設備:欠壓檢測/復位,LED,POR,PWM,WDT 輸入/輸出數:16 程序存儲器容量:4KB(4K x 8) 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:1K x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 3.6 V 數據轉換器:- 振蕩器型:內部 工作溫度:-40°C ~ 105°C 封裝/外殼:20-SOIC(0.295",7.50mm 寬) 包裝:管件 其它名稱:269-4116Z8F0413SH005EG-ND
ADUC824BS 制造商:Analog Devices 功能描述:MCU 8-bit ADuC8xx 8052 CISC 8KB Flash 3.3V/5V 52-Pin MQFP 制造商:Rochester Electronics LLC 功能描述:8BIT CISC 8KB FLASH 12.58MHZ 3.3/5V 52MQFP - Bulk 制造商:Analog Devices 功能描述:8BIT MCU +24BIT ADC LQFP52 824
ADUC824BS-DEN 制造商:Analog Devices 功能描述:
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