TEWS TECHNOLOGIES GmbH keeps the right to change technical specification without further notice.

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Issue 1.1.0

2018-02-13

TEWS TECHNOLOGIES GmbH

Am Bahnhof 7

25469 Halstenbek, Germany

Phone: +49 (0) 4101 4058 0

Fax: +49 (0) 4101 4058 19

e-mail: info@tews.com

www.tews.com

The Embedded I/O Company

TIP255

2 Mbytes SRAM Memory with Battery Backup

Application Information

The TIP255 is an IndustryPack

 compatible module that

offers an easy and reliable way to implement 2 Mbytes of

SRAM memory with battery backup. The TIP255 is ideal

for holding configuration parameter and data logging

applications.

Four 512 Kbit x eight low power SRAM devices are used

to provide two banks of 1 Mbyte (16 bit wide) SRAM

memory.

A non-volatile controller together with the on board lithium

battery converts the SRAM into non-volatile memory. The

battery status can be monitored by the control and status

register. Additionally an interrupt can be generated on

battery low.

Accesses to the TIP255 SRAM memory occur within the

IP memory space. The IP I/O space holds the control and

status register and the interrupt vector register.

Technical Information

 Interface according to IndustryPack specification

 Identification-PROM supports auto-configuration

 Single Size IndustryPack

 2 Mbytes of SRAM Memory

 Organized in 2 banks of 1 Mbyte (16 bit wide)

 SRAM chip: 4 devices 512 Kbit x 8, 70ns, TSOP-2

package, low power

 Non-volatile controller converts SRAM into non-

volatile memory

 On board battery holder with lithium battery (type

CR2430, 285mAh)

 Automatically switches to battery backup supply when

Vcc supply drops

 Interrupt support on battery low

 Battery life time 8 years typical @ +25°C

 Wait states: no wait states

 Power requirements: +5V only, on board +3.3V

generation

 Operating temperature 0 °C to +70 °C