Features: •Radiation Hardened
-Total Dose >105 RAD (Si)
-Transient Upset > 108 RAD (Si)/s
-Latch Up Free EPI-CMOS
•Low Power Consumption
-IDDSB = 50µA Maximum
-IDDOP = 4.0mA/MHz Maximum
•Pin Compatible with NMOS 8237A and the Intersil 82C37A
•High Speed Data Transfers Up To 2.5 MBPS With 5MHz Clock
•Four Independent Maskable Channels With Autoinitializa-tion Capability
•Expandable to Any Number of Channels
•Memory-to-Memory Transfer Capability
•CMOS Compatible
•Hardened Field, Self-Aligned, Junction Isolated CMOS Process
•Single 5V Supply
•Military Temperature Range -55 to +125Pinout
SpecificationsSupply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+6.5V
Input or Output Voltage Applied . . . . . . .VSS - 0.3V to VDD + 0.3V
for All Grades
Storage Temperature Range . . . . . . . . . . . . . . . . .-65 to +150
Lead Temperature (Soldering 10s). . . . . . . . . . . . . . . . . . . .+300
Junction Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+175
Typical Derating Factor. . . . . . . . . . ... .4mA/MHz Increase in IDDOP
ESD Classification . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . .Class 1DescriptionThe Intersil HS-82C37ARH is an enhanced, radiation hardened CMOS version of the industry standard 8237A Direct Memory Access (DMA) controller, fabricated using the Intersil hardened field, self-aligned silicon gate CMOS process. The HS-82C37ARH offers increased functionality, improved performance, and dramatically reduced power consumption for the radiation environment. The high speed, radiation hardness, and industry standard configuration of the HS-82C37ARH make it compatible with radiation hardened microprocessors such as the HS-80C85RH and the HS-80C86RH.
The HS-82C37ARH can improve system performance by allowing external devices to transfer data directly to or from system memory. Memory-to-memory transfer capability is also provided, along with a memory block initialization feature. DMA requests may be generated by either hardware or software, and each channel is independently programmable with a variety of features for flexible operation.
HS-82C37ARH static CMOS circuit design insures low operating power and allows gated clock operation for an even further reduction of power. Multimode programmability allows the user to select from three basic types of DMA services, and reconfiguration under program control is possible even with the clock to the controller stopped. Each channel has a full 64K address and word count range, and may be programmed to autoinitialize these registers following DMA termination (end of process). The Intersil hardened field CMOS process results in performance equal to or greater than existing radiation resis- tant products at a fraction of the power.
HS-82C37ARH Data Sheet
