- 您现在的位置：买卖IC网 > PDF目录11791 > ADUC7129BSTZ126-RL (Analog Devices Inc)IC DAS MCU ARM7 ADC/DDS 80-LQFP PDF资料下载
参数资料
| 型号： | ADUC7129BSTZ126-RL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 33/92页 |
| 文件大小： | 0K |
| 描述： | IC DAS MCU ARM7 ADC/DDS 80-LQFP |
| 产品培训模块： | ARM7 Applications & Tools Intro to ARM7 Core & Microconverters Process Control Direct Digital Synthesis Tutorial Series (1 of 7): Introduction |
| 标准包装： | 1 |
| 系列： | MicroConverter® ADuC7xxx |
| 核心处理器： | ARM7 |
| 芯体尺寸： | 16/32-位 |
| 速度： | 41.78MHz |
| 连通性： | EBI/EMI，I²C，SPI，UART/USART |
| 外围设备： | PLA，POR，PWM，PSM，温度传感器，WDT |
| 输入/输出数： | 38 |
| 程序存储器容量： | 126KB（63K x 16） |
| 程序存储器类型： | 闪存 |
| RAM 容量： | 8K x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 3 V ~ 3.6 V |
| 数据转换器： | A/D 10x12b; D/A 1x10b |
| 振荡器型： | 内部 |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 80-LQFP |
| 包装： | 标准包装 |
| 其它名称： | ADUC7129BSTZ126-RLDKR |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页当前第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页
ADuC7128/ADuC7129
Rev. 0 | Page 39 of 92
NONVOLATILE FLASH/EE MEMORY
FLASH/EE MEMORY OVERVIEW
The ADuC7128/ADuC7129 incorporate Flash/EE memory
technology on-chip to provide the user with nonvolatile, in-
circuit reprogrammable memory space.
Like EEPROM, Flash memory can be programmed in-system
at a byte level, although it must first be erased. The erase is
performed in page blocks. As a result, Flash memory is often,
and more correctly, referred to as Flash/EE memory.
Overall, Flash/EE memory represents a step closer to the ideal
memory device that includes nonvolatility, in-circuit
programmability, high density, and low cost. Incorporated in
the ADuC7128/ADuC7129, Flash/EE memory technology
allows the user to update program code space in-circuit,
without the need to replace one-time programmable (OTP)
devices at remote operating nodes.
FLASH/EE MEMORY
The ADuC7128/ADuC7129 contain two 64 kB arrays of
Flash/EE memory. In the first block, the lower 62 kB are
available to the user and the upper 2 kB of this Flash/EE
program memory array contain permanently embedded
firmware, allowing in-circuit serial download. The 2 kB of
embedded firmware also contain a power-on configuration
routine that downloads factory calibrated coefficients to the
various calibrated peripherals, such as band gap references.
This 2 kB embedded firmware is hidden from user code. It is not
possible for the user to read, write, or erase this page. In the second
block, all 64 kB of Flash/EE memory are available to the user.
The 126 kB of Flash/EE memory can be programmed in-circuit,
using the serial download mode or the JTAG mode provided.
Flash/EE Memory Reliability
The Flash/EE memory arrays on the parts are fully qualified for
two key Flash/EE memory characteristics: Flash/EE memory
cycling endurance and Flash/EE memory data retention.
Endurance quantifies the ability of the Flash/EE memory to be
cycled through many program, read, and erase cycles. A single
endurance cycle is composed of four independent, sequential
events, defined as
1.
Initial page erase sequence
2.
Read/verify, sequence a single Flash/EE location
3.
Byte program sequence memory
4.
Second read/verify sequence endurance cycle
In reliability qualification, every half word (16-bit wide)
location of the three pages (top, middle, and bottom) in
the Flash/EE memory is cycled 10,000 times from 0x0000
to 0xFFFF.
As indicated in Table 1 of the Specifications section, the
Flash/EE memory endurance qualification is carried out in
accordance with JEDEC Retention Lifetime Specification A117
over the industrial temperature range of –40° to +125°C. The
results allow the specification of a minimum endurance figure
over a supply temperature of 10,000 cycles.
Retention quantifies the ability of the Flash/EE memory to
retain its programmed data over time. Again, the parts are
qualified in accordance with the formal JEDEC Retention
Lifetime Specification (A117) at a specific junction temperature
(TJ = 85°C). As part of this qualification procedure, the
Flash/EE memory is cycled to its specified endurance limit,
described previously, before data retention is characterized.
This means that the Flash/EE memory is guaranteed to retain
its data for its fully specified retention lifetime every time the
Flash/EE memory is reprogrammed. Note, too, that retention
lifetime, based on an activation energy of 0.6 eV, derates with
150
300
450
600
30
40
55
70
85
100
125
135
150
RE
T
E
NT
IO
N
(
Y
ea
rs
)
0
04
95
5-
08
5
JUNCTION TEMPERATURE (°C)
Figure 44. Flash/EE Memory Data Retention
Serial Downloading (In-Circuit Programming)
The ADuC7128/ADuC7129 facilitate code download via the
standard UART serial port. The ADuC7128/ADuC7129 enter
serial download mode after a reset or power cycle if the BM pin
is pulled low through an external 1 kΩ resistor. Once in serial
download mode, the user can download code to the full 126 kB
of Flash/EE memory while the device is in-circuit in its target appli-
cation hardware. A PC serial download executable is provided as
part of the development system for serial downloads via the UART.
For additional information, an application note is available at
www.analog.com/microconverter describing the protocol for
serial downloads via the UART.
JTAG Access
The JTAG protocol uses the on-chip JTAG interface to
facilitate code download and debug.
相关PDF资料 |
PDF描述 |
|---|---|
| D38999/20FC8SC | CONN RCPT 8POS WALL MNT W/SCKT |
| D38999/26WC8PB | CONN PLUG 8POS STRAIGHT W/PINS |
| MS27473E18A11P | CONN PLUG 11POS STRAIGHT W/PINS |
| AT32UC3C2512C-Z2ZR | IC MCU AVR32 512K FLASH 64QFN |
| MS27484E10B98P | CONN PLUG 6POS STRAIGHT W/PINS |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ADUC7129BSTZ126-RL2 | 制造商:AD 制造商全称:Analog Devices 功能描述:Precision Analog Microcontroller ARM7TDMI MCU with 12-Bit ADC and DDS DAC |
| aduc7229bcpz126 | 制造商:Analog Devices 功能描述: |
| ADUC7229BCPZ126-RL | 制造商:Analog Devices 功能描述: |
| ADUC812 | 制造商:AD 制造商全称:Analog Devices 功能描述:MicroConverter⑩, Multichannel 12-Bit ADC with Embedded FLASH MCU |
| ADUC812_03 | 制造商:AD 制造商全称:Analog Devices 功能描述:MicroConverter㈢, Multichannel 12-Bit ADC with Embedded Flash MCU |
发布紧急采购，3分钟左右您将得到回复。