Z4A232I STEC, Z4A232I Datasheet - Page 32

• Manufacturer Part Number: Z4A232I
• Manufacturer: STEC
• Type: Solid State Driver

Specifications of Z4A232I

• Density: 32GByte
• Operating Supply Voltage (typ): 5V
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Package Type: Not Required
• Mounting: Screw
• Pin Count: 44
• Operating Temperature Classification: Industrial
• Operating Supply Voltage (min): 4.75V
• Operating Supply Voltage (max): 5.25V
• Programmable: Yes
• Lead Free Status / Rohs Status: Not Compliant

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SSD Operation
The Zeus SSD comprises three primary functional blocks: the ATA (IDE) interface connector, Zeus
SSD controller and NAND flash memory. A description of each drive component appears under
Functional
Read/write data transfer requests are initiated by the host via the ATA (IDE) bus interface. Once
received, the Zeus controller, under the direction of the microcontroller, processes the request.
Commands that do not require data to be read from or written to the flash memory controller are
typically handled by the Zeus controller. Some commands may require the Zeus controller to use
external circuitry (for example, Intelligent Destructive Purge™), that do not involve the flash memory
controller.
When a write operation is requested and data is received, the controller uses integrated DMA
controllers to transfer the data from host memory to the flash memory controller. Through a standard
ATA (IDE) interface, the flash memory controller transfers the data from the Zeus controller to
available locations in the local flash memory of the SSD. Zeus SSD storage capacity can range
between from 8GB to 64GB, with internal IDE transfer rates of 26 MB per second. The Zeus controller
notifies the host after the write operation is completed.
If a read request is received, the Zeus controller retrieves the data from the local flash memory via
the flash memory controller. If the Zeus controller is responding to a PIO read operation, it presents
the data to the ATA bus. If it is responding to a UDMA read request, the Zeus controller writes the
data directly to system memory on the host. Regardless of the type of operation (PIO or UDMA), the
Zeus controller notifies the host when the data is ready for transmission.
Blocks.
The microcontroller is responsible for initiating and controlling all
activity within the Zeus controller, including bad-block mapping
and executing the wear-leveling algorithms.
The Zeus controller decodes an incoming host command, and
configures the appropriate interrupts and status for the local
microprocessor to handle various ATA commands. For read and
write transfer commands, the hardware can handle the initial
handshake with the host automatically. If firmware enables full
auto mode, read and write transfers can be fully handled by
hardware with minimum firmware support.
I
NTERFACE
S
Zeus 2.5-Inch ATA Solid State Drive
PECIFICATIONS