Designed with the dual back-up battery system featuring a replaceable
but non-rechargeable 3V lithium battery (primary battery) and an
on-board rechargeable but non-replaceable battery (secondary battery)
for data retention. This design allows replacement of primary battery
without data loss for approximately 20 minutes. These replaceable
battery models have access times of 200ns and a broad range of
PCMCIA SRAM PC Card capacities.
Compatible
with all Alesis QuadraSynth and QS-series synthesizers with PCMCIA card
slots, including the Alesis QuadraSynth, QuadraSynth Plus Piano, QS6,
QS6.1, QS7, QS7.1, QS8, QS8.1 and QSR models. Normally used for the
storage of extra banks of patches and mixes.
These SRAM cards feature a built in lithium ion battery that recharges
when inserted into a PC Card slot. Depending on the capacity of the
card, the batteries in these SRAM memory cards can go between seven to
twelve months before requiring recharge. These fixed battery models
have improved access times of 150ns and a broader range of capacities
The cards are compatible with nearly all known PCMCIA
SRAM PC Card
applications and feature a write protect switch for preventing
inadvertent erasure. The card's rigid stainless steel construction
withstands harsh environmental conditions.
- Features
-
- CE Approved
- Hot insertion and removal
- PCMCIA Version 2.1/JEIDA 4.1 Compliant
- Optional 2 Kbytes EEPROM Attribute Memory
- Type I Form Factor with stainless steel case for rugged construction and ESD protection
- Fully compatible in applications for PC, PDA, Application Specific Instrumentation
- Write protect switch to prevent accidental overwriting
- Onboard rechargeable L-ION battery for date retention
- 150 nanosecond fast read/write access time
- Static Operation, No Clock Required
- plastic storage case included
- removable battery
- Memory Type
-
- Static Random-Access Memory
- Access Time
-
- Physical Dimensions
-
- PCMCIA Type I Enclosure: 85.6mm (L) x 54mm (W) x 3.3mm (H)
- Weight: 42.5 grams approx.
- Electrical Characteristics
-
- Operational Voltage: 5 Volts ± 5% (256KB to 6MB cards)
- Operational Voltage: 3.3/5 Volts ± 5% (8MB cards)
- Power Consumption
-
- Active Typical: 90mA (256KB to 6MB cards)
- Active Typical: 110mA (8MB cards)
- Active Maximum: 90mA (256KB to 6MB cards)
- Active Maximum: 110mA (8MB cards)
- Standby Mode Typical: < 2mA
- Standby Mode Recharge: 2mA Typical, 10mA Maximum
- Lithium Ion Battery
-
- Recharges at standby voltage
- Typical 2mA for fully charged @ 2.0V
- Maximum 10mA for fully discharged @ 0.0V
- Backup battery average charge 7 months for 4MB card (256KB to 6MB cards)
- Backup battery average charge 18 months for 4MB card (8MB cards)
- Backup
battery average charge based on 4MB cards, lower densities have longer
charge times, higher densities have shorter charge times
- Operating Environment
-
- Temperature Operating: 0° C to 60° C
- Temperature Storage: 0° C to 60° C
- Relative Humidity: 95% (max.) non-condensing
- Shock Operating 500G
- Card Life Expectancy
-
- Memory Use: Unlimited write cycles, no endurance issues
- Battery Use: 10 year minimum
