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参数资料
| 型号： | DS1380 |
| 厂商： | DALLAS SEMICONDUCTOR |
| 元件分类： | DRAM |
| 英文描述： | 2K x 8 Nonvolatile Static RAM(2K x 8非易失性静态RAM) |
| 中文描述： | 2K X 8 NON-VOLATILE SRAM, PDIP24 |
| 文件页数： | 1/3页 |
| 文件大小： | 34K |
| 代理商： | DS1380 |
DS1380
RAMport
DS1380
022598 1/3
FEATURES
2K x 8 static RAM
8–Bit transparent I/O port
Battery connection provided for nonvolatility
Multiplexed address/data bus reduces pin count
5% or 10% V
CC
tolerance
Power Fail output signal
Low power CMOS
24–pin DIP package or optional 24–pin SOIC
Ideally suited for microcontroller applications as add
on memory
PIN ASSIGNMENT
V
CC
CLK
PO8
PI8
V
BAT
MEM
PO7
PI7
GND
PO6
PI6
PO5
TOL
PF
PI1
PO1
PI2
PO2
PI3
PO3
PI4
PO4
PI5
GND
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
24–PIN DIP (600 MIL)
24–PIN SOIC (300 MIL)
PIN DESCRIPTION
PI1 – PI8
PO1 – PO8
PF
CLK
MEM
V
BAT
V
CC
GND
– Port Inputs (
μ
P Ports)
– Port Outputs (External Ports)
– Power Fail Output
– Clock
– Memory Select
– + Battery Connection
– +5 Volts
– Ground
DESCRIPTION
The DS1380 is a 2K x 8 nonvolatile static RAM designed
to connect directly to the port pins of a microcontroller.
Eight of ten port pins required to interface with the micro-
controller are reproduced by the DS1380 for general
purpose use. The reproduced port pins can be both in-
puts and outputs and will appear exactly the same as
the pins on the attached microcontroller. The static
RAM is read or written with three successive cycles con-
taining high order address, low order address and then
data. Read, write and status information is passed to
the DS1380 along with the high order address transfer.
While transferring data to and from memory, the I/O sta-
tus is locked and maintained. All data within the
DS1380 can be made nonvolatile with direct connection
of a 3–volt lithium battery. The DS1380 is controlled by
only two signals: clock and memory select.
相关PDF资料 |
PDF描述 |
|---|---|
| DS1381 | NV RAMport(非易失性RAM口) |
| DS1384 | Watchdog Timekeeping Controller(看门狗计时器芯片) |
| DS1386 | Nonvolatile Static RAM with a Full Function Real Time Clock (RTC),(带完整功能的实时时钟静态RAM) |
| DS1386P | RAMified Watchdog Timekeeper(带完整功能的实时时钟静态RAM) |
| DS1388Z-3 | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1380N | 制造商:未知厂家 制造商全称:未知厂家 功能描述:NVRAM (Battery Based) |
| DS1380S | 制造商:未知厂家 制造商全称:未知厂家 功能描述:NVRAM (Battery Based) |
| DS1380SN | 制造商:未知厂家 制造商全称:未知厂家 功能描述:NVRAM (Battery Based) |
| DS1384 | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:Watchdog Timekeeping Controller |
| DS1384FP | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Watchdog Timekeeping Controller |
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