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| 型号： | STK17T88-RF25ITR |
| 元件分类： | 时钟/数据恢复及定时提取 |
| 英文描述： | PROGRAMMABLE TIMER, PDSO48 |
| 封装： | 0.300 INCH, ROHS COMPLIANT, PLASTIC, SSOP-48 |
| 文件页数： | 1/29页 |
| 文件大小： | 535K |
| 代理商： | STK17T88-RF25ITR |
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STK17T88
1
This product conforms to specifications per the
terms of Simtek standard warranty. The product
has completed Simtek internal qualification testing
and has reached production status.
Jan, 2008
Document Control #ML0024 Rev 2.0
FEATURES
nvSRAM Combined With Integrated Real-Time
Clock Functions (RTC, Watchdog Timer, Clock
Alarm, Power Monitor)
Capacitor or Battery Backup for RTC
25, 45 ns Read Access & R/W Cycle Time
Unlimited Read/Write Endurance
Automatic Non-volatile STORE on Power Loss
Non-Volatile STORE Under Hardware or Soft-
ware Control
Automatic RECALL to SRAM on Power Up
Unlimited RECALL Cycles
200K STORE Cycles
20-Year Non-volatile Data Retention
Single 3 V +20%, -10% Power Supply
Commercial and Industrial Temperatures
48-pin 300-mil SSOP Package (RoHS-
Compliant)
DESCRIPTION
The Simtek STK17T88 combines a 256Kb non-vola-
tile static RAM (nvSRAM) with a full-featured real-
time clock in a reliable, monolithic integrated circuit.
The 256Kbit nvSRAM is a fast static RAM with a
non-volatile
Quantum
Trap
storage
element
included with each memory cell.
The SRAM provides the fast access & cycle times,
ease of use and unlimited read & write endurance of
a normal SRAM. Data transfers automatically to the
non-volatile storage cells when power loss is
detected (the STORE operation). On power up, data
is automatically restored to the SRAM (the RECALL
operation). Both STORE and RECALL operations
are also available under software control.
The real time clock function provides an accurate
clock with leap year tracking and a programmable,
high accuracy oscillator. The Alarm function is pro-
grammable for one-time alarms or periodic minutes,
hours, or days alarms. There is also a programma-
ble watchdog timer for processor control.
32K x 8 AutoStore nvSRAM with Real-Time Clock
ROW
D
E
CO
D
E
R
INPUT
BUFF
ERS
COLUMN DEC
G
E
W
COLUMN I/O
POWER
CONTROL
HSB
STORE/
RECALL
CONTROL
SOFTWARE
DETECT
A13 – A0
STORE
RECALL
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
VCC
VCAP
RTC
MUX
A14 – A0
X1
X2
INT
VRTCbat
VRTCcap
A5
A6
A7
A8
A9
A11
A12
A13
A14
A0 A1 A2 A3 A4 A10
Quantum Trap
512 X 512
STATIC RAM
ARRAY
512 X 512
BLOCK DIAGRAM
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| STK17TA8-R45 | REAL TIME CLOCK, PDSO48 |
| STK17TA8-R25 | REAL TIME CLOCK, PDSO48 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| STK17T88-RF25TR | 功能描述:NVRAM 32Kbx8+RTC 2.7-3.6V RoHS:否 制造商:Maxim Integrated 数据总线宽度:8 bit 存储容量:1024 Kbit 组织:128 K x 8 接口类型:Parallel 访问时间:70 ns 电源电压-最大:5.5 V 电源电压-最小:4.5 V 工作电流:85 mA 最大工作温度:+ 70 C 最小工作温度:0 C 封装 / 箱体:EDIP 封装:Tube |
| STK17T88-RF45 | 功能描述:NVRAM 32Kbx8+RTC 2.7-3.6V RoHS:否 制造商:Maxim Integrated 数据总线宽度:8 bit 存储容量:1024 Kbit 组织:128 K x 8 接口类型:Parallel 访问时间:70 ns 电源电压-最大:5.5 V 电源电压-最小:4.5 V 工作电流:85 mA 最大工作温度:+ 70 C 最小工作温度:0 C 封装 / 箱体:EDIP 封装:Tube |
| STK17T88-RF45I | 功能描述:NVRAM 32Kbx8+RTC 2.7-3.6V RoHS:否 制造商:Maxim Integrated 数据总线宽度:8 bit 存储容量:1024 Kbit 组织:128 K x 8 接口类型:Parallel 访问时间:70 ns 电源电压-最大:5.5 V 电源电压-最小:4.5 V 工作电流:85 mA 最大工作温度:+ 70 C 最小工作温度:0 C 封装 / 箱体:EDIP 封装:Tube |
| STK17T88-RF45ITR | 功能描述:NVRAM 32Kbx8+RTC 2.7-3.6V RoHS:否 制造商:Maxim Integrated 数据总线宽度:8 bit 存储容量:1024 Kbit 组织:128 K x 8 接口类型:Parallel 访问时间:70 ns 电源电压-最大:5.5 V 电源电压-最小:4.5 V 工作电流:85 mA 最大工作温度:+ 70 C 最小工作温度:0 C 封装 / 箱体:EDIP 封装:Tube |
| STK17T88-RF45TR | 功能描述:NVRAM 32Kbx8+RTC 2.7-3.6V RoHS:否 制造商:Maxim Integrated 数据总线宽度:8 bit 存储容量:1024 Kbit 组织:128 K x 8 接口类型:Parallel 访问时间:70 ns 电源电压-最大:5.5 V 电源电压-最小:4.5 V 工作电流:85 mA 最大工作温度:+ 70 C 最小工作温度:0 C 封装 / 箱体:EDIP 封装:Tube |
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