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参数资料
| 型号： | DS28DG02G-3C+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 1/34页 |
| 文件大小： | 0K |
| 描述： | IC EEPROM 2KBIT 2MHZ 36TQFN |
| 标准包装： | 2,500 |
| 格式 - 存储器： | EEPROMs - 串行 |
| 存储器类型： | EEPROM |
| 存储容量： | 2K (256 x 8) |
| 速度： | 2MHz |
| 接口： | SPI 3 线串行 |
| 电源电压： | 2.2 V ~ 5.25 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 36-WFQFN 裸露焊盘 |
| 供应商设备封装： | 36-TQFN 裸露焊盘（6x6） |
| 包装： | 带卷 (TR) |
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11/09
EV KIT AVAILABLE
DS28DG02
2Kb SPI EEPROM with PIO, RTC,
Reset, Battery Monitor, and Watchdog
www.maxim-ic.com
GENERAL DESCRIPTION
FEATURES
The DS28DG02 combines 2Kb (256 x 8) EEPROM
with 12 PIO lines, a real-time clock (RTC) and
calendar with alarm function, a CPU reset monitor, a
battery monitor, and a watchdog. Communication
with the device is accomplished with an industry-
standard SPI? interface. The user EEPROM is
organized as four blocks of 64 bytes each with
single-byte and up to 16-byte page write capability.
Additional registers provide access to PIOs and to
setup functions. Individual PIO lines can be
configured as inputs or outputs. The power-on state
of PIOs programmed as outputs is stored in
nonvolatile (NV) memory. All PIOs may be
reconfigured by the user through the serial interface.
The RTC/calendar operates in the 12/24-hour format
and automatically corrects for leap years. Battery
monitor threshold and watchdog timeout are user-
programmable through NV registers. The reset
monitor generates a reset to the CPU if the voltage at
the V CC pin falls below the factory-set limit. The reset
output includes a debounce circuit for manual
pushbutton reset.
APPLICATIONS
Asset-Tracking Systems
Broadband Access Network Equipment
Patient-Monitoring Systems
Home Lighting Control Systems
Holter Heart Monitors
Typical Operating Circuit appears on page 32.
Pin Configuration appears on page 33.
ORDERING INFORMATION
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?
2Kb (256 x 8) EEPROM Organized in Four
64-Byte Blocks
Single Byte and Up to 16-Byte EEPROM Write
Sequences
EEPROM Write-Protect Control Pin Protects
1, 2, or All 4 Blocks
Endurance 200k Cycles per Page at +25°C;
10ms (max) EEPROM Write Cycle
SPI Serial Interface Supporting Modes (0,0)
and (1,1) at Up to 2MHz Clock Frequency
12 PIO Lines with LED Drive Capability
Each PIO is Configured to Input or Output,
Open-Drain/Push-Pull on Startup by Stored
Value
All PIOs are Reconfigurable After Startup
RTC/Calendar/Alarm with BCD Format and
Leap-Year Compensation
RTC Controlled Through 32.768kHz, 12.5pF
Crystal or External TCXO
CPU Reset Through Fast-Response Precision
V CC Monitor with Hysteresis or Pushbutton
Battery Monitor 2.5V, 2.25V, 2.0V, 1.75V, -5%
Watchdog Timer 1.6s, 0.8s, 0.4s, 0.2s (typ)
Unique Factory-Programmed 64-Bit Device
Registration Number
Operating Range: 2.2V to 5.25V,
-40°C to +85°C
±4kV IEC 1000-4-2 ESD Protection Level
(Except Crystal Pins)
Available in 28-Lead, 4.4mm TSSOP or
36-Lead 6mm × 6mm QFN Package
PART
DS28DG02E-3C+
DS28DG02E-3C+T
DS28DG02G-3C+
DS28DG02G-3C+T
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
V CC TRIP
3.3V -5%
3.3V -5%
3.3V -5%
3.3V -5%
PIN-PACKAGE
28 TSSOP-EP * (4.4mm)
28 TSSOP-EP * T&R
36 TQFN-EP * (6mm × 6mm)
36 TQFN-EP * T&R
PKG CODE
U28E+5
U28E+5
T3666+3
T3666+3
*EP = Exposed Paddle.
+Denotes lead-free/RoHS compliant device.
For additional V CC monitor trip points or other device options, contact the factory.
Note: Registers are capitalized for clarity.
SPI is a trademark of Motorola, Inc.
Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device
may be simultaneously available through various sales channels. For information about device errata, click here: www.maxim-ic.com/errata .
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS28E01-100 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:带SHA-1引擎保护的1K位1-Wire EEPROM |
| DS28E01-100_12 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:1Kb Protected 1-Wire EEPROM with SHA-1 Engine |
| DS28E01-100+ | 功能描述:电可擦除可编程只读存储器 RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 |
| DS28E01G-100+R | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:1K-Bit Protected 1-Wire EEPROM with SHA-1 Engine |
| DS28E01G-100+T | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:1K-Bit Protected 1-Wire EEPROM with SHA-1 Engine |
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